13 files changed, 1639 insertions, 303 deletions

diff --git a/spec/javascripts/groups/components/app_spec.js b/spec/javascripts/groups/components/app_spec.js
new file mode 100644
index 00000000000..cd19a0fae1e
--- /dev/null
+++ b/spec/javascripts/groups/components/app_spec.js
@@ -0,0 +1,443 @@
+import Vue from 'vue';
+
+import appComponent from '~/groups/components/app.vue';
+import groupFolderComponent from '~/groups/components/group_folder.vue';
+import groupItemComponent from '~/groups/components/group_item.vue';
+
+import eventHub from '~/groups/event_hub';
+import GroupsStore from '~/groups/store/groups_store';
+import GroupsService from '~/groups/service/groups_service';
+
+import {
+  mockEndpoint, mockGroups, mockSearchedGroups,
+  mockRawPageInfo, mockParentGroupItem, mockRawChildren,
+  mockChildren, mockPageInfo,
+} from '../mock_data';
+
+const createComponent = (hideProjects = false) => {
+  const Component = Vue.extend(appComponent);
+  const store = new GroupsStore(false);
+  const service = new GroupsService(mockEndpoint);
+
+  return new Component({
+    propsData: {
+      store,
+      service,
+      hideProjects,
+    },
+  });
+};
+
+const returnServicePromise = (data, failed) => new Promise((resolve, reject) => {
+  if (failed) {
+    reject(data);
+  } else {
+    resolve({
+      json() {
+        return data;
+      },
+    });
+  }
+});
+
+describe('AppComponent', () => {
+  let vm;
+
+  beforeEach((done) => {
+    Vue.component('group-folder', groupFolderComponent);
+    Vue.component('group-item', groupItemComponent);
+
+    vm = createComponent();
+
+    Vue.nextTick(() => {
+      done();
+    });
+  });
+
+  describe('computed', () => {
+    beforeEach(() => {
+      vm.$mount();
+    });
+
+    afterEach(() => {
+      vm.$destroy();
+    });
+
+    describe('groups', () => {
+      it('should return list of groups from store', () => {
+        spyOn(vm.store, 'getGroups');
+
+        const groups = vm.groups;
+        expect(vm.store.getGroups).toHaveBeenCalled();
+        expect(groups).not.toBeDefined();
+      });
+    });
+
+    describe('pageInfo', () => {
+      it('should return pagination info from store', () => {
+        spyOn(vm.store, 'getPaginationInfo');
+
+        const pageInfo = vm.pageInfo;
+        expect(vm.store.getPaginationInfo).toHaveBeenCalled();
+        expect(pageInfo).not.toBeDefined();
+      });
+    });
+  });
+
+  describe('methods', () => {
+    beforeEach(() => {
+      vm.$mount();
+    });
+
+    afterEach(() => {
+      vm.$destroy();
+    });
+
+    describe('fetchGroups', () => {
+      it('should call `getGroups` with all the params provided', (done) => {
+        spyOn(vm.service, 'getGroups').and.returnValue(returnServicePromise(mockGroups));
+
+        vm.fetchGroups({
+          parentId: 1,
+          page: 2,
+          filterGroupsBy: 'git',
+          sortBy: 'created_desc',
+          archived: true,
+        });
+        setTimeout(() => {
+          expect(vm.service.getGroups).toHaveBeenCalledWith(1, 2, 'git', 'created_desc', true);
+          done();
+        }, 0);
+      });
+
+      it('should set headers to store for building pagination info when called with `updatePagination`', (done) => {
+        spyOn(vm.service, 'getGroups').and.returnValue(returnServicePromise({ headers: mockRawPageInfo }));
+        spyOn(vm, 'updatePagination');
+
+        vm.fetchGroups({ updatePagination: true });
+        setTimeout(() => {
+          expect(vm.service.getGroups).toHaveBeenCalled();
+          expect(vm.updatePagination).toHaveBeenCalled();
+          done();
+        }, 0);
+      });
+
+      it('should show flash error when request fails', (done) => {
+        spyOn(vm.service, 'getGroups').and.returnValue(returnServicePromise(null, true));
+        spyOn($, 'scrollTo');
+        spyOn(window, 'Flash');
+
+        vm.fetchGroups({});
+        setTimeout(() => {
+          expect(vm.isLoading).toBeFalsy();
+          expect($.scrollTo).toHaveBeenCalledWith(0);
+          expect(window.Flash).toHaveBeenCalledWith('An error occurred. Please try again.');
+          done();
+        }, 0);
+      });
+    });
+
+    describe('fetchAllGroups', () => {
+      it('should fetch default set of groups', (done) => {
+        spyOn(vm, 'fetchGroups').and.returnValue(returnServicePromise(mockGroups));
+        spyOn(vm, 'updatePagination').and.callThrough();
+        spyOn(vm, 'updateGroups').and.callThrough();
+
+        vm.fetchAllGroups();
+        expect(vm.isLoading).toBeTruthy();
+        expect(vm.fetchGroups).toHaveBeenCalled();
+        setTimeout(() => {
+          expect(vm.isLoading).toBeFalsy();
+          expect(vm.updateGroups).toHaveBeenCalled();
+          done();
+        }, 0);
+      });
+
+      it('should fetch matching set of groups when app is loaded with search query', (done) => {
+        spyOn(vm, 'fetchGroups').and.returnValue(returnServicePromise(mockSearchedGroups));
+        spyOn(vm, 'updateGroups').and.callThrough();
+
+        vm.fetchAllGroups();
+        expect(vm.fetchGroups).toHaveBeenCalledWith({
+          page: null,
+          filterGroupsBy: null,
+          sortBy: null,
+          updatePagination: true,
+          archived: null,
+        });
+        setTimeout(() => {
+          expect(vm.updateGroups).toHaveBeenCalled();
+          done();
+        }, 0);
+      });
+    });
+
+    describe('fetchPage', () => {
+      it('should fetch groups for provided page details and update window state', (done) => {
+        spyOn(vm, 'fetchGroups').and.returnValue(returnServicePromise(mockGroups));
+        spyOn(vm, 'updateGroups').and.callThrough();
+        spyOn(gl.utils, 'mergeUrlParams').and.callThrough();
+        spyOn(window.history, 'replaceState');
+        spyOn($, 'scrollTo');
+
+        vm.fetchPage(2, null, null, true);
+        expect(vm.isLoading).toBeTruthy();
+        expect(vm.fetchGroups).toHaveBeenCalledWith({
+          page: 2,
+          filterGroupsBy: null,
+          sortBy: null,
+          updatePagination: true,
+          archived: true,
+        });
+        setTimeout(() => {
+          expect(vm.isLoading).toBeFalsy();
+          expect($.scrollTo).toHaveBeenCalledWith(0);
+          expect(gl.utils.mergeUrlParams).toHaveBeenCalledWith({ page: 2 }, jasmine.any(String));
+          expect(window.history.replaceState).toHaveBeenCalledWith({
+            page: jasmine.any(String),
+          }, jasmine.any(String), jasmine.any(String));
+          expect(vm.updateGroups).toHaveBeenCalled();
+          done();
+        }, 0);
+      });
+    });
+
+    describe('toggleChildren', () => {
+      let groupItem;
+
+      beforeEach(() => {
+        groupItem = Object.assign({}, mockParentGroupItem);
+        groupItem.isOpen = false;
+        groupItem.isChildrenLoading = false;
+      });
+
+      it('should fetch children of given group and expand it if group is collapsed and children are not loaded', (done) => {
+        spyOn(vm, 'fetchGroups').and.returnValue(returnServicePromise(mockRawChildren));
+        spyOn(vm.store, 'setGroupChildren');
+
+        vm.toggleChildren(groupItem);
+        expect(groupItem.isChildrenLoading).toBeTruthy();
+        expect(vm.fetchGroups).toHaveBeenCalledWith({
+          parentId: groupItem.id,
+        });
+        setTimeout(() => {
+          expect(vm.store.setGroupChildren).toHaveBeenCalled();
+          done();
+        }, 0);
+      });
+
+      it('should skip network request while expanding group if children are already loaded', () => {
+        spyOn(vm, 'fetchGroups');
+        groupItem.children = mockRawChildren;
+
+        vm.toggleChildren(groupItem);
+        expect(vm.fetchGroups).not.toHaveBeenCalled();
+        expect(groupItem.isOpen).toBeTruthy();
+      });
+
+      it('should collapse group if it is already expanded', () => {
+        spyOn(vm, 'fetchGroups');
+        groupItem.isOpen = true;
+
+        vm.toggleChildren(groupItem);
+        expect(vm.fetchGroups).not.toHaveBeenCalled();
+        expect(groupItem.isOpen).toBeFalsy();
+      });
+
+      it('should set `isChildrenLoading` back to `false` if load request fails', (done) => {
+        spyOn(vm, 'fetchGroups').and.returnValue(returnServicePromise({}, true));
+
+        vm.toggleChildren(groupItem);
+        expect(groupItem.isChildrenLoading).toBeTruthy();
+        setTimeout(() => {
+          expect(groupItem.isChildrenLoading).toBeFalsy();
+          done();
+        }, 0);
+      });
+    });
+
+    describe('leaveGroup', () => {
+      let groupItem;
+      let childGroupItem;
+
+      beforeEach(() => {
+        groupItem = Object.assign({}, mockParentGroupItem);
+        groupItem.children = mockChildren;
+        childGroupItem = groupItem.children[0];
+        groupItem.isChildrenLoading = false;
+      });
+
+      it('should leave group and remove group item from tree', (done) => {
+        const notice = `You left the "${childGroupItem.fullName}" group.`;
+        spyOn(vm.service, 'leaveGroup').and.returnValue(returnServicePromise({ notice }));
+        spyOn(vm.store, 'removeGroup').and.callThrough();
+        spyOn(window, 'Flash');
+        spyOn($, 'scrollTo');
+
+        vm.leaveGroup(childGroupItem, groupItem);
+        expect(childGroupItem.isBeingRemoved).toBeTruthy();
+        expect(vm.service.leaveGroup).toHaveBeenCalledWith(childGroupItem.leavePath);
+        setTimeout(() => {
+          expect($.scrollTo).toHaveBeenCalledWith(0);
+          expect(vm.store.removeGroup).toHaveBeenCalledWith(childGroupItem, groupItem);
+          expect(window.Flash).toHaveBeenCalledWith(notice, 'notice');
+          done();
+        }, 0);
+      });
+
+      it('should show error flash message if request failed to leave group', (done) => {
+        const message = 'An error occurred. Please try again.';
+        spyOn(vm.service, 'leaveGroup').and.returnValue(returnServicePromise({ status: 500 }, true));
+        spyOn(vm.store, 'removeGroup').and.callThrough();
+        spyOn(window, 'Flash');
+
+        vm.leaveGroup(childGroupItem, groupItem);
+        expect(childGroupItem.isBeingRemoved).toBeTruthy();
+        expect(vm.service.leaveGroup).toHaveBeenCalledWith(childGroupItem.leavePath);
+        setTimeout(() => {
+          expect(vm.store.removeGroup).not.toHaveBeenCalled();
+          expect(window.Flash).toHaveBeenCalledWith(message);
+          expect(childGroupItem.isBeingRemoved).toBeFalsy();
+          done();
+        }, 0);
+      });
+
+      it('should show appropriate error flash message if request forbids to leave group', (done) => {
+        const message = 'Failed to leave the group. Please make sure you are not the only owner.';
+        spyOn(vm.service, 'leaveGroup').and.returnValue(returnServicePromise({ status: 403 }, true));
+        spyOn(vm.store, 'removeGroup').and.callThrough();
+        spyOn(window, 'Flash');
+
+        vm.leaveGroup(childGroupItem, groupItem);
+        expect(childGroupItem.isBeingRemoved).toBeTruthy();
+        expect(vm.service.leaveGroup).toHaveBeenCalledWith(childGroupItem.leavePath);
+        setTimeout(() => {
+          expect(vm.store.removeGroup).not.toHaveBeenCalled();
+          expect(window.Flash).toHaveBeenCalledWith(message);
+          expect(childGroupItem.isBeingRemoved).toBeFalsy();
+          done();
+        }, 0);
+      });
+    });
+
+    describe('updatePagination', () => {
+      it('should set pagination info to store from provided headers', () => {
+        spyOn(vm.store, 'setPaginationInfo');
+
+        vm.updatePagination(mockRawPageInfo);
+        expect(vm.store.setPaginationInfo).toHaveBeenCalledWith(mockRawPageInfo);
+      });
+    });
+
+    describe('updateGroups', () => {
+      it('should call setGroups on store if method was called directly', () => {
+        spyOn(vm.store, 'setGroups');
+
+        vm.updateGroups(mockGroups);
+        expect(vm.store.setGroups).toHaveBeenCalledWith(mockGroups);
+      });
+
+      it('should call setSearchedGroups on store if method was called with fromSearch param', () => {
+        spyOn(vm.store, 'setSearchedGroups');
+
+        vm.updateGroups(mockGroups, true);
+        expect(vm.store.setSearchedGroups).toHaveBeenCalledWith(mockGroups);
+      });
+
+      it('should set `isSearchEmpty` prop based on groups count', () => {
+        vm.updateGroups(mockGroups);
+        expect(vm.isSearchEmpty).toBeFalsy();
+
+        vm.updateGroups([]);
+        expect(vm.isSearchEmpty).toBeTruthy();
+      });
+    });
+  });
+
+  describe('created', () => {
+    it('should bind event listeners on eventHub', (done) => {
+      spyOn(eventHub, '$on');
+
+      const newVm = createComponent();
+      newVm.$mount();
+
+      Vue.nextTick(() => {
+        expect(eventHub.$on).toHaveBeenCalledWith('fetchPage', jasmine.any(Function));
+        expect(eventHub.$on).toHaveBeenCalledWith('toggleChildren', jasmine.any(Function));
+        expect(eventHub.$on).toHaveBeenCalledWith('leaveGroup', jasmine.any(Function));
+        expect(eventHub.$on).toHaveBeenCalledWith('updatePagination', jasmine.any(Function));
+        expect(eventHub.$on).toHaveBeenCalledWith('updateGroups', jasmine.any(Function));
+        newVm.$destroy();
+        done();
+      });
+    });
+
+    it('should initialize `searchEmptyMessage` prop with correct string when `hideProjects` is `false`', (done) => {
+      const newVm = createComponent();
+      newVm.$mount();
+      Vue.nextTick(() => {
+        expect(newVm.searchEmptyMessage).toBe('Sorry, no groups or projects matched your search');
+        newVm.$destroy();
+        done();
+      });
+    });
+
+    it('should initialize `searchEmptyMessage` prop with correct string when `hideProjects` is `true`', (done) => {
+      const newVm = createComponent(true);
+      newVm.$mount();
+      Vue.nextTick(() => {
+        expect(newVm.searchEmptyMessage).toBe('Sorry, no groups matched your search');
+        newVm.$destroy();
+        done();
+      });
+    });
+  });
+
+  describe('beforeDestroy', () => {
+    it('should unbind event listeners on eventHub', (done) => {
+      spyOn(eventHub, '$off');
+
+      const newVm = createComponent();
+      newVm.$mount();
+      newVm.$destroy();
+
+      Vue.nextTick(() => {
+        expect(eventHub.$off).toHaveBeenCalledWith('fetchPage', jasmine.any(Function));
+        expect(eventHub.$off).toHaveBeenCalledWith('toggleChildren', jasmine.any(Function));
+        expect(eventHub.$off).toHaveBeenCalledWith('leaveGroup', jasmine.any(Function));
+        expect(eventHub.$off).toHaveBeenCalledWith('updatePagination', jasmine.any(Function));
+        expect(eventHub.$off).toHaveBeenCalledWith('updateGroups', jasmine.any(Function));
+        done();
+      });
+    });
+  });
+
+  describe('template', () => {
+    beforeEach(() => {
+      vm.$mount();
+    });
+
+    afterEach(() => {
+      vm.$destroy();
+    });
+
+    it('should render loading icon', (done) => {
+      vm.isLoading = true;
+      Vue.nextTick(() => {
+        expect(vm.$el.querySelector('.loading-animation')).toBeDefined();
+        expect(vm.$el.querySelector('i.fa').getAttribute('aria-label')).toBe('Loading groups');
+        done();
+      });
+    });
+
+    it('should render groups tree', (done) => {
+      vm.groups = [mockParentGroupItem];
+      vm.isLoading = false;
+      vm.pageInfo = mockPageInfo;
+      Vue.nextTick(() => {
+        expect(vm.$el.querySelector('.groups-list-tree-container')).toBeDefined();
+        done();
+      });
+    });
+  });
+});
diff --git a/spec/javascripts/groups/components/group_folder_spec.js b/spec/javascripts/groups/components/group_folder_spec.js
new file mode 100644
index 00000000000..4eb198595fb
--- /dev/null
+++ b/spec/javascripts/groups/components/group_folder_spec.js
@@ -0,0 +1,66 @@
+import Vue from 'vue';
+
+import groupFolderComponent from '~/groups/components/group_folder.vue';
+import groupItemComponent from '~/groups/components/group_item.vue';
+import { mockGroups, mockParentGroupItem } from '../mock_data';
+
+const createComponent = (groups = mockGroups, parentGroup = mockParentGroupItem) => {
+  const Component = Vue.extend(groupFolderComponent);
+
+  return new Component({
+    propsData: {
+      groups,
+      parentGroup,
+    },
+  });
+};
+
+describe('GroupFolderComponent', () => {
+  let vm;
+
+  beforeEach((done) => {
+    Vue.component('group-item', groupItemComponent);
+
+    vm = createComponent();
+    vm.$mount();
+
+    Vue.nextTick(() => {
+      done();
+    });
+  });
+
+  afterEach(() => {
+    vm.$destroy();
+  });
+
+  describe('computed', () => {
+    describe('hasMoreChildren', () => {
+      it('should return false when childrenCount of group is less than MAX_CHILDREN_COUNT', () => {
+        expect(vm.hasMoreChildren).toBeFalsy();
+      });
+    });
+
+    describe('moreChildrenStats', () => {
+      it('should return message with count of excess children over MAX_CHILDREN_COUNT limit', () => {
+        expect(vm.moreChildrenStats).toBe('3 more items');
+      });
+    });
+  });
+
+  describe('template', () => {
+    it('should render component template correctly', () => {
+      expect(vm.$el.classList.contains('group-list-tree')).toBeTruthy();
+      expect(vm.$el.querySelectorAll('li.group-row').length).toBe(7);
+    });
+
+    it('should render more children link when groups list has children over MAX_CHILDREN_COUNT limit', () => {
+      const parentGroup = Object.assign({}, mockParentGroupItem);
+      parentGroup.childrenCount = 21;
+
+      const newVm = createComponent(mockGroups, parentGroup);
+      newVm.$mount();
+      expect(newVm.$el.querySelector('li.group-row a.has-more-items')).toBeDefined();
+      newVm.$destroy();
+    });
+  });
+});
diff --git a/spec/javascripts/groups/components/group_item_spec.js b/spec/javascripts/groups/components/group_item_spec.js
new file mode 100644
index 00000000000..0f4fbdae445
--- /dev/null
+++ b/spec/javascripts/groups/components/group_item_spec.js
@@ -0,0 +1,177 @@
+import Vue from 'vue';
+
+import groupItemComponent from '~/groups/components/group_item.vue';
+import groupFolderComponent from '~/groups/components/group_folder.vue';
+import eventHub from '~/groups/event_hub';
+import { mockParentGroupItem, mockChildren } from '../mock_data';
+
+import mountComponent from '../../helpers/vue_mount_component_helper';
+
+const createComponent = (group = mockParentGroupItem, parentGroup = mockChildren[0]) => {
+  const Component = Vue.extend(groupItemComponent);
+
+  return mountComponent(Component, {
+    group,
+    parentGroup,
+  });
+};
+
+describe('GroupItemComponent', () => {
+  let vm;
+
+  beforeEach((done) => {
+    Vue.component('group-folder', groupFolderComponent);
+
+    vm = createComponent();
+
+    Vue.nextTick(() => {
+      done();
+    });
+  });
+
+  afterEach(() => {
+    vm.$destroy();
+  });
+
+  describe('computed', () => {
+    describe('groupDomId', () => {
+      it('should return ID string suffixed with group ID', () => {
+        expect(vm.groupDomId).toBe('group-55');
+      });
+    });
+
+    describe('rowClass', () => {
+      it('should return map of classes based on group details', () => {
+        const classes = ['is-open', 'has-children', 'has-description', 'being-removed'];
+        const rowClass = vm.rowClass;
+
+        expect(Object.keys(rowClass).length).toBe(classes.length);
+        Object.keys(rowClass).forEach((className) => {
+          expect(classes.indexOf(className) > -1).toBeTruthy();
+        });
+      });
+    });
+
+    describe('hasChildren', () => {
+      it('should return boolean value representing if group has any children present', () => {
+        let newVm;
+        const group = Object.assign({}, mockParentGroupItem);
+
+        group.childrenCount = 5;
+        newVm = createComponent(group);
+        expect(newVm.hasChildren).toBeTruthy();
+        newVm.$destroy();
+
+        group.childrenCount = 0;
+        newVm = createComponent(group);
+        expect(newVm.hasChildren).toBeFalsy();
+        newVm.$destroy();
+      });
+    });
+
+    describe('hasAvatar', () => {
+      it('should return boolean value representing if group has any avatar present', () => {
+        let newVm;
+        const group = Object.assign({}, mockParentGroupItem);
+
+        group.avatarUrl = null;
+        newVm = createComponent(group);
+        expect(newVm.hasAvatar).toBeFalsy();
+        newVm.$destroy();
+
+        group.avatarUrl = '/uploads/group_avatar.png';
+        newVm = createComponent(group);
+        expect(newVm.hasAvatar).toBeTruthy();
+        newVm.$destroy();
+      });
+    });
+
+    describe('isGroup', () => {
+      it('should return boolean value representing if group item is of type `group` or not', () => {
+        let newVm;
+        const group = Object.assign({}, mockParentGroupItem);
+
+        group.type = 'group';
+        newVm = createComponent(group);
+        expect(newVm.isGroup).toBeTruthy();
+        newVm.$destroy();
+
+        group.type = 'project';
+        newVm = createComponent(group);
+        expect(newVm.isGroup).toBeFalsy();
+        newVm.$destroy();
+      });
+    });
+  });
+
+  describe('methods', () => {
+    describe('onClickRowGroup', () => {
+      let event;
+
+      beforeEach(() => {
+        const classList = {
+          contains() {
+            return false;
+          },
+        };
+
+        event = {
+          target: {
+            classList,
+            parentElement: {
+              classList,
+            },
+          },
+        };
+      });
+
+      it('should emit `toggleChildren` event when expand is clicked on a group and it has children present', () => {
+        spyOn(eventHub, '$emit');
+
+        vm.onClickRowGroup(event);
+        expect(eventHub.$emit).toHaveBeenCalledWith('toggleChildren', vm.group);
+      });
+
+      it('should navigate page to group homepage if group does not have any children present', (done) => {
+        const group = Object.assign({}, mockParentGroupItem);
+        group.childrenCount = 0;
+        const newVm = createComponent(group);
+        spyOn(gl.utils, 'visitUrl').and.stub();
+        spyOn(eventHub, '$emit');
+
+        newVm.onClickRowGroup(event);
+        setTimeout(() => {
+          expect(eventHub.$emit).not.toHaveBeenCalled();
+          expect(gl.utils.visitUrl).toHaveBeenCalledWith(newVm.group.relativePath);
+          done();
+        }, 0);
+      });
+    });
+  });
+
+  describe('template', () => {
+    it('should render component template correctly', () => {
+      expect(vm.$el.getAttribute('id')).toBe('group-55');
+      expect(vm.$el.classList.contains('group-row')).toBeTruthy();
+
+      expect(vm.$el.querySelector('.group-row-contents')).toBeDefined();
+      expect(vm.$el.querySelector('.group-row-contents .controls')).toBeDefined();
+      expect(vm.$el.querySelector('.group-row-contents .stats')).toBeDefined();
+
+      expect(vm.$el.querySelector('.folder-toggle-wrap')).toBeDefined();
+      expect(vm.$el.querySelector('.folder-toggle-wrap .folder-caret')).toBeDefined();
+      expect(vm.$el.querySelector('.folder-toggle-wrap .item-type-icon')).toBeDefined();
+
+      expect(vm.$el.querySelector('.avatar-container')).toBeDefined();
+      expect(vm.$el.querySelector('.avatar-container a.no-expand')).toBeDefined();
+      expect(vm.$el.querySelector('.avatar-container .avatar')).toBeDefined();
+
+      expect(vm.$el.querySelector('.title')).toBeDefined();
+      expect(vm.$el.querySelector('.title a.no-expand')).toBeDefined();
+      expect(vm.$el.querySelector('.access-type')).toBeDefined();
+      expect(vm.$el.querySelector('.description')).toBeDefined();
+
+      expect(vm.$el.querySelector('.group-list-tree')).toBeDefined();
+    });
+  });
+});
diff --git a/spec/javascripts/groups/components/groups_spec.js b/spec/javascripts/groups/components/groups_spec.js
new file mode 100644
index 00000000000..90e818c1545
--- /dev/null
+++ b/spec/javascripts/groups/components/groups_spec.js
@@ -0,0 +1,70 @@
+import Vue from 'vue';
+
+import groupsComponent from '~/groups/components/groups.vue';
+import groupFolderComponent from '~/groups/components/group_folder.vue';
+import groupItemComponent from '~/groups/components/group_item.vue';
+import eventHub from '~/groups/event_hub';
+import { mockGroups, mockPageInfo } from '../mock_data';
+
+import mountComponent from '../../helpers/vue_mount_component_helper';
+
+const createComponent = (searchEmpty = false) => {
+  const Component = Vue.extend(groupsComponent);
+
+  return mountComponent(Component, {
+    groups: mockGroups,
+    pageInfo: mockPageInfo,
+    searchEmptyMessage: 'No matching results',
+    searchEmpty,
+  });
+};
+
+describe('GroupsComponent', () => {
+  let vm;
+
+  beforeEach((done) => {
+    Vue.component('group-folder', groupFolderComponent);
+    Vue.component('group-item', groupItemComponent);
+
+    vm = createComponent();
+
+    Vue.nextTick(() => {
+      done();
+    });
+  });
+
+  afterEach(() => {
+    vm.$destroy();
+  });
+
+  describe('methods', () => {
+    describe('change', () => {
+      it('should emit `fetchPage` event when page is changed via pagination', () => {
+        spyOn(eventHub, '$emit').and.stub();
+
+        vm.change(2);
+        expect(eventHub.$emit).toHaveBeenCalledWith('fetchPage', 2, jasmine.any(Object), jasmine.any(Object), jasmine.any(Object));
+      });
+    });
+  });
+
+  describe('template', () => {
+    it('should render component template correctly', (done) => {
+      Vue.nextTick(() => {
+        expect(vm.$el.querySelector('.groups-list-tree-container')).toBeDefined();
+        expect(vm.$el.querySelector('.group-list-tree')).toBeDefined();
+        expect(vm.$el.querySelector('.gl-pagination')).toBeDefined();
+        expect(vm.$el.querySelectorAll('.has-no-search-results').length === 0).toBeTruthy();
+        done();
+      });
+    });
+
+    it('should render empty search message when `searchEmpty` is `true`', (done) => {
+      vm.searchEmpty = true;
+      Vue.nextTick(() => {
+        expect(vm.$el.querySelector('.has-no-search-results')).toBeDefined();
+        done();
+      });
+    });
+  });
+});
diff --git a/spec/javascripts/groups/components/item_actions_spec.js b/spec/javascripts/groups/components/item_actions_spec.js
new file mode 100644
index 00000000000..2ce1a749a96
--- /dev/null
+++ b/spec/javascripts/groups/components/item_actions_spec.js
@@ -0,0 +1,110 @@
+import Vue from 'vue';
+
+import itemActionsComponent from '~/groups/components/item_actions.vue';
+import eventHub from '~/groups/event_hub';
+import { mockParentGroupItem, mockChildren } from '../mock_data';
+
+import mountComponent from '../../helpers/vue_mount_component_helper';
+
+const createComponent = (group = mockParentGroupItem, parentGroup = mockChildren[0]) => {
+  const Component = Vue.extend(itemActionsComponent);
+
+  return mountComponent(Component, {
+    group,
+    parentGroup,
+  });
+};
+
+describe('ItemActionsComponent', () => {
+  let vm;
+
+  beforeEach(() => {
+    vm = createComponent();
+  });
+
+  afterEach(() => {
+    vm.$destroy();
+  });
+
+  describe('computed', () => {
+    describe('leaveConfirmationMessage', () => {
+      it('should return appropriate string for leave group confirmation', () => {
+        expect(vm.leaveConfirmationMessage).toBe('Are you sure you want to leave the "platform / hardware" group?');
+      });
+    });
+  });
+
+  describe('methods', () => {
+    describe('onLeaveGroup', () => {
+      it('should change `dialogStatus` prop to `true` which shows confirmation dialog', () => {
+        expect(vm.dialogStatus).toBeFalsy();
+        vm.onLeaveGroup();
+        expect(vm.dialogStatus).toBeTruthy();
+      });
+    });
+
+    describe('leaveGroup', () => {
+      it('should change `dialogStatus` prop to `false` and emit `leaveGroup` event with required params when called with `leaveConfirmed` as `true`', () => {
+        spyOn(eventHub, '$emit');
+        vm.dialogStatus = true;
+        vm.leaveGroup(true);
+        expect(vm.dialogStatus).toBeFalsy();
+        expect(eventHub.$emit).toHaveBeenCalledWith('leaveGroup', vm.group, vm.parentGroup);
+      });
+
+      it('should change `dialogStatus` prop to `false` and should NOT emit `leaveGroup` event when called with `leaveConfirmed` as `false`', () => {
+        spyOn(eventHub, '$emit');
+        vm.dialogStatus = true;
+        vm.leaveGroup(false);
+        expect(vm.dialogStatus).toBeFalsy();
+        expect(eventHub.$emit).not.toHaveBeenCalled();
+      });
+    });
+  });
+
+  describe('template', () => {
+    it('should render component template correctly', () => {
+      expect(vm.$el.classList.contains('controls')).toBeTruthy();
+    });
+
+    it('should render Edit Group button with correct attribute values', () => {
+      const group = Object.assign({}, mockParentGroupItem);
+      group.canEdit = true;
+      const newVm = createComponent(group);
+
+      const editBtn = newVm.$el.querySelector('a.edit-group');
+      expect(editBtn).toBeDefined();
+      expect(editBtn.classList.contains('no-expand')).toBeTruthy();
+      expect(editBtn.getAttribute('href')).toBe(group.editPath);
+      expect(editBtn.getAttribute('aria-label')).toBe('Edit group');
+      expect(editBtn.dataset.originalTitle).toBe('Edit group');
+      expect(editBtn.querySelector('i.fa.fa-cogs')).toBeDefined();
+
+      newVm.$destroy();
+    });
+
+    it('should render Leave Group button with correct attribute values', () => {
+      const group = Object.assign({}, mockParentGroupItem);
+      group.canLeave = true;
+      const newVm = createComponent(group);
+
+      const leaveBtn = newVm.$el.querySelector('a.leave-group');
+      expect(leaveBtn).toBeDefined();
+      expect(leaveBtn.classList.contains('no-expand')).toBeTruthy();
+      expect(leaveBtn.getAttribute('href')).toBe(group.leavePath);
+      expect(leaveBtn.getAttribute('aria-label')).toBe('Leave this group');
+      expect(leaveBtn.dataset.originalTitle).toBe('Leave this group');
+      expect(leaveBtn.querySelector('i.fa.fa-sign-out')).toBeDefined();
+
+      newVm.$destroy();
+    });
+
+    it('should show modal dialog when `dialogStatus` is set to `true`', () => {
+      vm.dialogStatus = true;
+      const modalDialogEl = vm.$el.querySelector('.modal.popup-dialog');
+      expect(modalDialogEl).toBeDefined();
+      expect(modalDialogEl.querySelector('.modal-title').innerText.trim()).toBe('Are you sure?');
+      expect(modalDialogEl.querySelector('.btn.btn-warning').innerText.trim()).toBe('Leave');
+    });
+  });
+});
diff --git a/spec/javascripts/groups/components/item_caret_spec.js b/spec/javascripts/groups/components/item_caret_spec.js
new file mode 100644
index 00000000000..4310a07e6e6
--- /dev/null
+++ b/spec/javascripts/groups/components/item_caret_spec.js
@@ -0,0 +1,40 @@
+import Vue from 'vue';
+
+import itemCaretComponent from '~/groups/components/item_caret.vue';
+
+import mountComponent from '../../helpers/vue_mount_component_helper';
+
+const createComponent = (isGroupOpen = false) => {
+  const Component = Vue.extend(itemCaretComponent);
+
+  return mountComponent(Component, {
+    isGroupOpen,
+  });
+};
+
+describe('ItemCaretComponent', () => {
+  describe('template', () => {
+    it('should render component template correctly', () => {
+      const vm = createComponent();
+      vm.$mount();
+      expect(vm.$el.classList.contains('folder-caret')).toBeTruthy();
+      vm.$destroy();
+    });
+
+    it('should render caret down icon if `isGroupOpen` prop is `true`', () => {
+      const vm = createComponent(true);
+      vm.$mount();
+      expect(vm.$el.querySelectorAll('i.fa.fa-caret-down').length).toBe(1);
+      expect(vm.$el.querySelectorAll('i.fa.fa-caret-right').length).toBe(0);
+      vm.$destroy();
+    });
+
+    it('should render caret right icon if `isGroupOpen` prop is `false`', () => {
+      const vm = createComponent();
+      vm.$mount();
+      expect(vm.$el.querySelectorAll('i.fa.fa-caret-down').length).toBe(0);
+      expect(vm.$el.querySelectorAll('i.fa.fa-caret-right').length).toBe(1);
+      vm.$destroy();
+    });
+  });
+});
diff --git a/spec/javascripts/groups/components/item_stats_spec.js b/spec/javascripts/groups/components/item_stats_spec.js
new file mode 100644
index 00000000000..e200f9f08bd
--- /dev/null
+++ b/spec/javascripts/groups/components/item_stats_spec.js
@@ -0,0 +1,159 @@
+import Vue from 'vue';
+
+import itemStatsComponent from '~/groups/components/item_stats.vue';
+import {
+  mockParentGroupItem,
+  ITEM_TYPE,
+  VISIBILITY_TYPE_ICON,
+  GROUP_VISIBILITY_TYPE,
+  PROJECT_VISIBILITY_TYPE,
+} from '../mock_data';
+
+import mountComponent from '../../helpers/vue_mount_component_helper';
+
+const createComponent = (item = mockParentGroupItem) => {
+  const Component = Vue.extend(itemStatsComponent);
+
+  return mountComponent(Component, {
+    item,
+  });
+};
+
+describe('ItemStatsComponent', () => {
+  describe('computed', () => {
+    describe('visibilityIcon', () => {
+      it('should return icon class based on `item.visibility` value', () => {
+        Object.keys(VISIBILITY_TYPE_ICON).forEach((visibility) => {
+          const item = Object.assign({}, mockParentGroupItem, { visibility });
+          const vm = createComponent(item);
+          vm.$mount();
+          expect(vm.visibilityIcon).toBe(VISIBILITY_TYPE_ICON[visibility]);
+          vm.$destroy();
+        });
+      });
+    });
+
+    describe('visibilityTooltip', () => {
+      it('should return tooltip string for Group based on `item.visibility` value', () => {
+        Object.keys(GROUP_VISIBILITY_TYPE).forEach((visibility) => {
+          const item = Object.assign({}, mockParentGroupItem, {
+            visibility,
+            type: ITEM_TYPE.GROUP,
+          });
+          const vm = createComponent(item);
+          vm.$mount();
+          expect(vm.visibilityTooltip).toBe(GROUP_VISIBILITY_TYPE[visibility]);
+          vm.$destroy();
+        });
+      });
+
+      it('should return tooltip string for Project based on `item.visibility` value', () => {
+        Object.keys(PROJECT_VISIBILITY_TYPE).forEach((visibility) => {
+          const item = Object.assign({}, mockParentGroupItem, {
+            visibility,
+            type: ITEM_TYPE.PROJECT,
+          });
+          const vm = createComponent(item);
+          vm.$mount();
+          expect(vm.visibilityTooltip).toBe(PROJECT_VISIBILITY_TYPE[visibility]);
+          vm.$destroy();
+        });
+      });
+    });
+
+    describe('isProject', () => {
+      it('should return boolean value representing whether `item.type` is Project or not', () => {
+        let item;
+        let vm;
+
+        item = Object.assign({}, mockParentGroupItem, { type: ITEM_TYPE.PROJECT });
+        vm = createComponent(item);
+        vm.$mount();
+        expect(vm.isProject).toBeTruthy();
+        vm.$destroy();
+
+        item = Object.assign({}, mockParentGroupItem, { type: ITEM_TYPE.GROUP });
+        vm = createComponent(item);
+        vm.$mount();
+        expect(vm.isProject).toBeFalsy();
+        vm.$destroy();
+      });
+    });
+
+    describe('isGroup', () => {
+      it('should return boolean value representing whether `item.type` is Group or not', () => {
+        let item;
+        let vm;
+
+        item = Object.assign({}, mockParentGroupItem, { type: ITEM_TYPE.GROUP });
+        vm = createComponent(item);
+        vm.$mount();
+        expect(vm.isGroup).toBeTruthy();
+        vm.$destroy();
+
+        item = Object.assign({}, mockParentGroupItem, { type: ITEM_TYPE.PROJECT });
+        vm = createComponent(item);
+        vm.$mount();
+        expect(vm.isGroup).toBeFalsy();
+        vm.$destroy();
+      });
+    });
+  });
+
+  describe('template', () => {
+    it('should render component template correctly', () => {
+      const vm = createComponent();
+      vm.$mount();
+
+      const visibilityIconEl = vm.$el.querySelector('.item-visibility');
+      expect(vm.$el.classList.contains('.stats')).toBeDefined();
+      expect(visibilityIconEl).toBeDefined();
+      expect(visibilityIconEl.dataset.originalTitle).toBe(vm.visibilityTooltip);
+      expect(visibilityIconEl.querySelector('i.fa')).toBeDefined();
+
+      vm.$destroy();
+    });
+
+    it('should render stat icons if `item.type` is Group', () => {
+      const item = Object.assign({}, mockParentGroupItem, { type: ITEM_TYPE.GROUP });
+      const vm = createComponent(item);
+      vm.$mount();
+
+      const subgroupIconEl = vm.$el.querySelector('span.number-subgroups');
+      expect(subgroupIconEl).toBeDefined();
+      expect(subgroupIconEl.dataset.originalTitle).toBe('Subgroups');
+      expect(subgroupIconEl.querySelector('i.fa.fa-folder')).toBeDefined();
+      expect(subgroupIconEl.innerText.trim()).toBe(`${vm.item.subgroupCount}`);
+
+      const projectsIconEl = vm.$el.querySelector('span.number-projects');
+      expect(projectsIconEl).toBeDefined();
+      expect(projectsIconEl.dataset.originalTitle).toBe('Projects');
+      expect(projectsIconEl.querySelector('i.fa.fa-bookmark')).toBeDefined();
+      expect(projectsIconEl.innerText.trim()).toBe(`${vm.item.projectCount}`);
+
+      const membersIconEl = vm.$el.querySelector('span.number-users');
+      expect(membersIconEl).toBeDefined();
+      expect(membersIconEl.dataset.originalTitle).toBe('Members');
+      expect(membersIconEl.querySelector('i.fa.fa-users')).toBeDefined();
+      expect(membersIconEl.innerText.trim()).toBe(`${vm.item.memberCount}`);
+
+      vm.$destroy();
+    });
+
+    it('should render stat icons if `item.type` is Project', () => {
+      const item = Object.assign({}, mockParentGroupItem, {
+        type: ITEM_TYPE.PROJECT,
+        starCount: 4,
+      });
+      const vm = createComponent(item);
+      vm.$mount();
+
+      const projectStarIconEl = vm.$el.querySelector('.project-stars');
+      expect(projectStarIconEl).toBeDefined();
+      expect(projectStarIconEl.querySelector('i.fa.fa-star')).toBeDefined();
+      expect(projectStarIconEl.innerText.trim()).toBe(`${vm.item.starCount}`);
+
+      vm.$destroy();
+    });
+  });
+});
diff --git a/spec/javascripts/groups/components/item_type_icon_spec.js b/spec/javascripts/groups/components/item_type_icon_spec.js
new file mode 100644
index 00000000000..528e6ed1b4c
--- /dev/null
+++ b/spec/javascripts/groups/components/item_type_icon_spec.js
@@ -0,0 +1,54 @@
+import Vue from 'vue';
+
+import itemTypeIconComponent from '~/groups/components/item_type_icon.vue';
+import { ITEM_TYPE } from '../mock_data';
+
+import mountComponent from '../../helpers/vue_mount_component_helper';
+
+const createComponent = (itemType = ITEM_TYPE.GROUP, isGroupOpen = false) => {
+  const Component = Vue.extend(itemTypeIconComponent);
+
+  return mountComponent(Component, {
+    itemType,
+    isGroupOpen,
+  });
+};
+
+describe('ItemTypeIconComponent', () => {
+  describe('template', () => {
+    it('should render component template correctly', () => {
+      const vm = createComponent();
+      vm.$mount();
+      expect(vm.$el.classList.contains('item-type-icon')).toBeTruthy();
+      vm.$destroy();
+    });
+
+    it('should render folder open or close icon based `isGroupOpen` prop value', () => {
+      let vm;
+
+      vm = createComponent(ITEM_TYPE.GROUP, true);
+      vm.$mount();
+      expect(vm.$el.querySelector('i.fa.fa-folder-open')).toBeDefined();
+      vm.$destroy();
+
+      vm = createComponent(ITEM_TYPE.GROUP);
+      vm.$mount();
+      expect(vm.$el.querySelector('i.fa.fa-folder')).toBeDefined();
+      vm.$destroy();
+    });
+
+    it('should render bookmark icon based on `isProject` prop value', () => {
+      let vm;
+
+      vm = createComponent(ITEM_TYPE.PROJECT);
+      vm.$mount();
+      expect(vm.$el.querySelectorAll('i.fa.fa-bookmark').length).toBe(1);
+      vm.$destroy();
+
+      vm = createComponent(ITEM_TYPE.GROUP);
+      vm.$mount();
+      expect(vm.$el.querySelectorAll('i.fa.fa-bookmark').length).toBe(0);
+      vm.$destroy();
+    });
+  });
+});
diff --git a/spec/javascripts/groups/group_item_spec.js b/spec/javascripts/groups/group_item_spec.js
deleted file mode 100644
index 25e10552d95..00000000000
--- a/spec/javascripts/groups/group_item_spec.js
+++ /dev/null
@@ -1,102 +0,0 @@
-import Vue from 'vue';
-import groupItemComponent from '~/groups/components/group_item.vue';
-import GroupsStore from '~/groups/stores/groups_store';
-import { group1 } from './mock_data';
-
-describe('Groups Component', () => {
-  let GroupItemComponent;
-  let component;
-  let store;
-  let group;
-
-  describe('group with default data', () => {
-    beforeEach((done) => {
-      GroupItemComponent = Vue.extend(groupItemComponent);
-      store = new GroupsStore();
-      group = store.decorateGroup(group1);
-
-      component = new GroupItemComponent({
-        propsData: {
-          group,
-        },
-      }).$mount();
-
-      Vue.nextTick(() => {
-        done();
-      });
-    });
-
-    afterEach(() => {
-      component.$destroy();
-    });
-
-    it('should render the group item correctly', () => {
-      expect(component.$el.classList.contains('group-row')).toBe(true);
-      expect(component.$el.classList.contains('.no-description')).toBe(false);
-      expect(component.$el.querySelector('.number-projects').textContent).toContain(group.numberProjects);
-      expect(component.$el.querySelector('.number-users').textContent).toContain(group.numberUsers);
-      expect(component.$el.querySelector('.group-visibility')).toBeDefined();
-      expect(component.$el.querySelector('.avatar-container')).toBeDefined();
-      expect(component.$el.querySelector('.title').textContent).toContain(group.name);
-      expect(component.$el.querySelector('.access-type').textContent).toContain(group.permissions.humanGroupAccess);
-      expect(component.$el.querySelector('.description').textContent).toContain(group.description);
-      expect(component.$el.querySelector('.edit-group')).toBeDefined();
-      expect(component.$el.querySelector('.leave-group')).toBeDefined();
-    });
-  });
-
-  describe('group without description', () => {
-    beforeEach((done) => {
-      GroupItemComponent = Vue.extend(groupItemComponent);
-      store = new GroupsStore();
-      group1.description = '';
-      group = store.decorateGroup(group1);
-
-      component = new GroupItemComponent({
-        propsData: {
-          group,
-        },
-      }).$mount();
-
-      Vue.nextTick(() => {
-        done();
-      });
-    });
-
-    afterEach(() => {
-      component.$destroy();
-    });
-
-    it('should render group item correctly', () => {
-      expect(component.$el.querySelector('.description').textContent).toBe('');
-      expect(component.$el.classList.contains('.no-description')).toBe(false);
-    });
-  });
-
-  describe('user has not access to group', () => {
-    beforeEach((done) => {
-      GroupItemComponent = Vue.extend(groupItemComponent);
-      store = new GroupsStore();
-      group1.permissions.human_group_access = null;
-      group = store.decorateGroup(group1);
-
-      component = new GroupItemComponent({
-        propsData: {
-          group,
-        },
-      }).$mount();
-
-      Vue.nextTick(() => {
-        done();
-      });
-    });
-
-    afterEach(() => {
-      component.$destroy();
-    });
-
-    it('should not display access type', () => {
-      expect(component.$el.querySelector('.access-type')).toBeNull();
-    });
-  });
-});
diff --git a/spec/javascripts/groups/groups_spec.js b/spec/javascripts/groups/groups_spec.js
deleted file mode 100644
index b14153dbbfa..00000000000
--- a/spec/javascripts/groups/groups_spec.js
+++ /dev/null
@@ -1,99 +0,0 @@
-import Vue from 'vue';
-import eventHub from '~/groups/event_hub';
-import groupFolderComponent from '~/groups/components/group_folder.vue';
-import groupItemComponent from '~/groups/components/group_item.vue';
-import groupsComponent from '~/groups/components/groups.vue';
-import GroupsStore from '~/groups/stores/groups_store';
-import { groupsData } from './mock_data';
-
-describe('Groups Component', () => {
-  let GroupsComponent;
-  let store;
-  let component;
-  let groups;
-
-  beforeEach((done) => {
-    Vue.component('group-folder', groupFolderComponent);
-    Vue.component('group-item', groupItemComponent);
-
-    store = new GroupsStore();
-    groups = store.setGroups(groupsData.groups);
-
-    store.storePagination(groupsData.pagination);
-
-    GroupsComponent = Vue.extend(groupsComponent);
-
-    component = new GroupsComponent({
-      propsData: {
-        groups: store.state.groups,
-        pageInfo: store.state.pageInfo,
-      },
-    }).$mount();
-
-    Vue.nextTick(() => {
-      done();
-    });
-  });
-
-  afterEach(() => {
-    component.$destroy();
-  });
-
-  describe('with data', () => {
-    it('should render a list of groups', () => {
-      expect(component.$el.classList.contains('groups-list-tree-container')).toBe(true);
-      expect(component.$el.querySelector('#group-12')).toBeDefined();
-      expect(component.$el.querySelector('#group-1119')).toBeDefined();
-      expect(component.$el.querySelector('#group-1120')).toBeDefined();
-    });
-
-    it('should respect the order of groups', () => {
-      const wrap = component.$el.querySelector('.groups-list-tree-container > .group-list-tree');
-      expect(wrap.querySelector('.group-row:nth-child(1)').id).toBe('group-12');
-      expect(wrap.querySelector('.group-row:nth-child(2)').id).toBe('group-1119');
-    });
-
-    it('should render group and its subgroup', () => {
-      const lists = component.$el.querySelectorAll('.group-list-tree');
-
-      expect(lists.length).toBe(3); // one parent and two subgroups
-
-      expect(lists[0].querySelector('#group-1119').classList.contains('is-open')).toBe(true);
-      expect(lists[0].querySelector('#group-1119').classList.contains('has-subgroups')).toBe(true);
-
-      expect(lists[2].querySelector('#group-1120').textContent).toContain(groups.id1119.subGroups.id1120.name);
-    });
-
-    it('should render group identicon when group avatar is not present', () => {
-      const avatar = component.$el.querySelector('#group-12 .avatar-container .avatar');
-      expect(avatar.nodeName).toBe('DIV');
-      expect(avatar.classList.contains('identicon')).toBeTruthy();
-      expect(avatar.getAttribute('style').indexOf('background-color') > -1).toBeTruthy();
-    });
-
-    it('should render group avatar when group avatar is present', () => {
-      const avatar = component.$el.querySelector('#group-1120 .avatar-container .avatar');
-      expect(avatar.nodeName).toBe('IMG');
-      expect(avatar.classList.contains('identicon')).toBeFalsy();
-    });
-
-    it('should remove prefix of parent group', () => {
-      expect(component.$el.querySelector('#group-12 #group-1128 .title').textContent).toContain('level2 / level3 / level4');
-    });
-
-    it('should remove the group after leaving the group', (done) => {
-      spyOn(window, 'confirm').and.returnValue(true);
-
-      eventHub.$on('leaveGroup', (group, collection) => {
-        store.removeGroup(group, collection);
-      });
-
-      component.$el.querySelector('#group-12 .leave-group').click();
-
-      Vue.nextTick(() => {
-        expect(component.$el.querySelector('#group-12')).toBeNull();
-        done();
-      });
-    });
-  });
-});
diff --git a/spec/javascripts/groups/mock_data.js b/spec/javascripts/groups/mock_data.js
index 5bb84b591f4..6184d671790 100644
--- a/spec/javascripts/groups/mock_data.js
+++ b/spec/javascripts/groups/mock_data.js
@@ -1,114 +1,380 @@
-const group1 = {
-  id: 12,
-  name: 'level1',
-  path: 'level1',
-  description: 'foo',
-  visibility: 'public',
-  avatar_url: null,
-  web_url: 'http://localhost:3000/groups/level1',
-  group_path: '/level1',
-  full_name: 'level1',
-  full_path: 'level1',
-  parent_id: null,
-  created_at: '2017-05-15T19:01:23.670Z',
-  updated_at: '2017-05-15T19:01:23.670Z',
-  number_projects_with_delimiter: '1',
-  number_users_with_delimiter: '1',
-  has_subgroups: true,
-  permissions: {
-    human_group_access: 'Master',
-  },
+export const mockEndpoint = '/dashboard/groups.json';
+
+export const ITEM_TYPE = {
+  PROJECT: 'project',
+  GROUP: 'group',
 };
 
-// This group has no direct parent, should be placed as subgroup of group1
-const group14 = {
-  id: 1128,
-  name: 'level4',
-  path: 'level4',
-  description: 'foo',
-  visibility: 'public',
-  avatar_url: null,
-  web_url: 'http://localhost:3000/groups/level1/level2/level3/level4',
-  group_path: '/level1/level2/level3/level4',
-  full_name: 'level1 / level2 / level3 / level4',
-  full_path: 'level1/level2/level3/level4',
-  parent_id: 1127,
-  created_at: '2017-05-15T19:02:01.645Z',
-  updated_at: '2017-05-15T19:02:01.645Z',
-  number_projects_with_delimiter: '1',
-  number_users_with_delimiter: '1',
-  has_subgroups: true,
-  permissions: {
-    human_group_access: 'Master',
-  },
+export const GROUP_VISIBILITY_TYPE = {
+  public: 'Public - The group and any public projects can be viewed without any authentication.',
+  internal: 'Internal - The group and any internal projects can be viewed by any logged in user.',
+  private: 'Private - The group and its projects can only be viewed by members.',
 };
 
-const group2 = {
-  id: 1119,
-  name: 'devops',
-  path: 'devops',
-  description: 'foo',
-  visibility: 'public',
-  avatar_url: null,
-  web_url: 'http://localhost:3000/groups/devops',
-  group_path: '/devops',
-  full_name: 'devops',
-  full_path: 'devops',
-  parent_id: null,
-  created_at: '2017-05-11T19:35:09.635Z',
-  updated_at: '2017-05-11T19:35:09.635Z',
-  number_projects_with_delimiter: '1',
-  number_users_with_delimiter: '1',
-  has_subgroups: true,
-  permissions: {
-    human_group_access: 'Master',
-  },
+export const PROJECT_VISIBILITY_TYPE = {
+  public: 'Public - The project can be accessed without any authentication.',
+  internal: 'Internal - The project can be accessed by any logged in user.',
+  private: 'Private - Project access must be granted explicitly to each user.',
+};
+
+export const VISIBILITY_TYPE_ICON = {
+  public: 'fa-globe',
+  internal: 'fa-shield',
+  private: 'fa-lock',
 };
 
-const group21 = {
-  id: 1120,
-  name: 'chef',
-  path: 'chef',
-  description: 'foo',
+export const mockParentGroupItem = {
+  id: 55,
+  name: 'hardware',
+  description: '',
   visibility: 'public',
-  avatar_url: '/uploads/-/system/group/avatar/2/GitLab.png',
-  web_url: 'http://localhost:3000/groups/devops/chef',
-  group_path: '/devops/chef',
-  full_name: 'devops / chef',
-  full_path: 'devops/chef',
-  parent_id: 1119,
-  created_at: '2017-05-11T19:51:04.060Z',
-  updated_at: '2017-05-11T19:51:04.060Z',
-  number_projects_with_delimiter: '1',
-  number_users_with_delimiter: '1',
-  has_subgroups: true,
-  permissions: {
-    human_group_access: 'Master',
-  },
+  fullName: 'platform / hardware',
+  relativePath: '/platform/hardware',
+  canEdit: true,
+  type: 'group',
+  avatarUrl: null,
+  permission: 'Owner',
+  editPath: '/groups/platform/hardware/edit',
+  childrenCount: 3,
+  leavePath: '/groups/platform/hardware/group_members/leave',
+  parentId: 54,
+  memberCount: '1',
+  projectCount: 1,
+  subgroupCount: 2,
+  canLeave: false,
+  children: [],
+  isOpen: true,
+  isChildrenLoading: false,
+  isBeingRemoved: false,
 };
 
-const groupsData = {
-  groups: [group1, group14, group2, group21],
-  pagination: {
-    Date: 'Mon, 22 May 2017 22:31:52 GMT',
-    'X-Prev-Page': '1',
-    'X-Content-Type-Options': 'nosniff',
-    'X-Total': '31',
-    'Transfer-Encoding': 'chunked',
-    'X-Runtime': '0.611144',
-    'X-Xss-Protection': '1; mode=block',
-    'X-Request-Id': 'f5db8368-3ce5-4aa4-89d2-a125d9dead09',
-    'X-Ua-Compatible': 'IE=edge',
-    'X-Per-Page': '20',
-    Link: '<http://localhost:3000/dashboard/groups.json?page=1&per_page=20>; rel="prev", <http://localhost:3000/dashboard/groups.json?page=1&per_page=20>; rel="first", <http://localhost:3000/dashboard/groups.json?page=2&per_page=20>; rel="last"',
-    'X-Next-Page': '',
-    Etag: 'W/"a82f846947136271cdb7d55d19ef33d2"',
-    'X-Frame-Options': 'DENY',
-    'Content-Type': 'application/json; charset=utf-8',
-    'Cache-Control': 'max-age=0, private, must-revalidate',
-    'X-Total-Pages': '2',
-    'X-Page': '2',
+export const mockRawChildren = [
+  {
+    id: 57,
+    name: 'bsp',
+    description: '',
+    visibility: 'public',
+    full_name: 'platform / hardware / bsp',
+    relative_path: '/platform/hardware/bsp',
+    can_edit: true,
+    type: 'group',
+    avatar_url: null,
+    permission: 'Owner',
+    edit_path: '/groups/platform/hardware/bsp/edit',
+    children_count: 6,
+    leave_path: '/groups/platform/hardware/bsp/group_members/leave',
+    parent_id: 55,
+    number_users_with_delimiter: '1',
+    project_count: 4,
+    subgroup_count: 2,
+    can_leave: false,
+    children: [],
+  },
+];
+
+export const mockChildren = [
+  {
+    id: 57,
+    name: 'bsp',
+    description: '',
+    visibility: 'public',
+    fullName: 'platform / hardware / bsp',
+    relativePath: '/platform/hardware/bsp',
+    canEdit: true,
+    type: 'group',
+    avatarUrl: null,
+    permission: 'Owner',
+    editPath: '/groups/platform/hardware/bsp/edit',
+    childrenCount: 6,
+    leavePath: '/groups/platform/hardware/bsp/group_members/leave',
+    parentId: 55,
+    memberCount: '1',
+    projectCount: 4,
+    subgroupCount: 2,
+    canLeave: false,
+    children: [],
+    isOpen: true,
+    isChildrenLoading: false,
+    isBeingRemoved: false,
   },
+];
+
+export const mockGroups = [
+  {
+    id: 75,
+    name: 'test-group',
+    description: '',
+    visibility: 'public',
+    full_name: 'test-group',
+    relative_path: '/test-group',
+    can_edit: true,
+    type: 'group',
+    avatar_url: null,
+    permission: 'Owner',
+    edit_path: '/groups/test-group/edit',
+    children_count: 2,
+    leave_path: '/groups/test-group/group_members/leave',
+    parent_id: null,
+    number_users_with_delimiter: '1',
+    project_count: 2,
+    subgroup_count: 0,
+    can_leave: false,
+  },
+  {
+    id: 67,
+    name: 'open-source',
+    description: '',
+    visibility: 'private',
+    full_name: 'open-source',
+    relative_path: '/open-source',
+    can_edit: true,
+    type: 'group',
+    avatar_url: null,
+    permission: 'Owner',
+    edit_path: '/groups/open-source/edit',
+    children_count: 0,
+    leave_path: '/groups/open-source/group_members/leave',
+    parent_id: null,
+    number_users_with_delimiter: '1',
+    project_count: 0,
+    subgroup_count: 0,
+    can_leave: false,
+  },
+  {
+    id: 54,
+    name: 'platform',
+    description: '',
+    visibility: 'public',
+    full_name: 'platform',
+    relative_path: '/platform',
+    can_edit: true,
+    type: 'group',
+    avatar_url: null,
+    permission: 'Owner',
+    edit_path: '/groups/platform/edit',
+    children_count: 1,
+    leave_path: '/groups/platform/group_members/leave',
+    parent_id: null,
+    number_users_with_delimiter: '1',
+    project_count: 0,
+    subgroup_count: 1,
+    can_leave: false,
+  },
+  {
+    id: 5,
+    name: 'H5bp',
+    description: 'Minus dolor consequuntur qui nam recusandae quam incidunt.',
+    visibility: 'public',
+    full_name: 'H5bp',
+    relative_path: '/h5bp',
+    can_edit: true,
+    type: 'group',
+    avatar_url: null,
+    permission: 'Owner',
+    edit_path: '/groups/h5bp/edit',
+    children_count: 1,
+    leave_path: '/groups/h5bp/group_members/leave',
+    parent_id: null,
+    number_users_with_delimiter: '5',
+    project_count: 1,
+    subgroup_count: 0,
+    can_leave: false,
+  },
+  {
+    id: 4,
+    name: 'Twitter',
+    description: 'Deserunt hic nostrum placeat veniam.',
+    visibility: 'public',
+    full_name: 'Twitter',
+    relative_path: '/twitter',
+    can_edit: true,
+    type: 'group',
+    avatar_url: null,
+    permission: 'Owner',
+    edit_path: '/groups/twitter/edit',
+    children_count: 2,
+    leave_path: '/groups/twitter/group_members/leave',
+    parent_id: null,
+    number_users_with_delimiter: '5',
+    project_count: 2,
+    subgroup_count: 0,
+    can_leave: false,
+  },
+  {
+    id: 3,
+    name: 'Documentcloud',
+    description: 'Consequatur saepe totam ea pariatur maxime.',
+    visibility: 'public',
+    full_name: 'Documentcloud',
+    relative_path: '/documentcloud',
+    can_edit: true,
+    type: 'group',
+    avatar_url: null,
+    permission: 'Owner',
+    edit_path: '/groups/documentcloud/edit',
+    children_count: 1,
+    leave_path: '/groups/documentcloud/group_members/leave',
+    parent_id: null,
+    number_users_with_delimiter: '5',
+    project_count: 1,
+    subgroup_count: 0,
+    can_leave: false,
+  },
+  {
+    id: 2,
+    name: 'Gitlab Org',
+    description: 'Debitis ea quas aperiam velit doloremque ab.',
+    visibility: 'public',
+    full_name: 'Gitlab Org',
+    relative_path: '/gitlab-org',
+    can_edit: true,
+    type: 'group',
+    avatar_url: '/uploads/-/system/group/avatar/2/GitLab.png',
+    permission: 'Owner',
+    edit_path: '/groups/gitlab-org/edit',
+    children_count: 4,
+    leave_path: '/groups/gitlab-org/group_members/leave',
+    parent_id: null,
+    number_users_with_delimiter: '5',
+    project_count: 4,
+    subgroup_count: 0,
+    can_leave: false,
+  },
+];
+
+export const mockSearchedGroups = [
+  {
+    id: 55,
+    name: 'hardware',
+    description: '',
+    visibility: 'public',
+    full_name: 'platform / hardware',
+    relative_path: '/platform/hardware',
+    can_edit: true,
+    type: 'group',
+    avatar_url: null,
+    permission: 'Owner',
+    edit_path: '/groups/platform/hardware/edit',
+    children_count: 3,
+    leave_path: '/groups/platform/hardware/group_members/leave',
+    parent_id: 54,
+    number_users_with_delimiter: '1',
+    project_count: 1,
+    subgroup_count: 2,
+    can_leave: false,
+    children: [
+      {
+        id: 57,
+        name: 'bsp',
+        description: '',
+        visibility: 'public',
+        full_name: 'platform / hardware / bsp',
+        relative_path: '/platform/hardware/bsp',
+        can_edit: true,
+        type: 'group',
+        avatar_url: null,
+        permission: 'Owner',
+        edit_path: '/groups/platform/hardware/bsp/edit',
+        children_count: 6,
+        leave_path: '/groups/platform/hardware/bsp/group_members/leave',
+        parent_id: 55,
+        number_users_with_delimiter: '1',
+        project_count: 4,
+        subgroup_count: 2,
+        can_leave: false,
+        children: [
+          {
+            id: 60,
+            name: 'kernel',
+            description: '',
+            visibility: 'public',
+            full_name: 'platform / hardware / bsp / kernel',
+            relative_path: '/platform/hardware/bsp/kernel',
+            can_edit: true,
+            type: 'group',
+            avatar_url: null,
+            permission: 'Owner',
+            edit_path: '/groups/platform/hardware/bsp/kernel/edit',
+            children_count: 1,
+            leave_path: '/groups/platform/hardware/bsp/kernel/group_members/leave',
+            parent_id: 57,
+            number_users_with_delimiter: '1',
+            project_count: 0,
+            subgroup_count: 1,
+            can_leave: false,
+            children: [
+              {
+                id: 61,
+                name: 'common',
+                description: '',
+                visibility: 'public',
+                full_name: 'platform / hardware / bsp / kernel / common',
+                relative_path: '/platform/hardware/bsp/kernel/common',
+                can_edit: true,
+                type: 'group',
+                avatar_url: null,
+                permission: 'Owner',
+                edit_path: '/groups/platform/hardware/bsp/kernel/common/edit',
+                children_count: 2,
+                leave_path: '/groups/platform/hardware/bsp/kernel/common/group_members/leave',
+                parent_id: 60,
+                number_users_with_delimiter: '1',
+                project_count: 2,
+                subgroup_count: 0,
+                can_leave: false,
+                children: [
+                  {
+                    id: 17,
+                    name: 'v4.4',
+                    description: 'Voluptatem qui ea error aperiam veritatis doloremque consequatur temporibus.',
+                    visibility: 'public',
+                    full_name: 'platform / hardware / bsp / kernel / common / v4.4',
+                    relative_path: '/platform/hardware/bsp/kernel/common/v4.4',
+                    can_edit: true,
+                    type: 'project',
+                    avatar_url: null,
+                    permission: null,
+                    edit_path: '/platform/hardware/bsp/kernel/common/v4.4/edit',
+                    star_count: 0,
+                  },
+                  {
+                    id: 16,
+                    name: 'v4.1',
+                    description: 'Rerum expedita voluptatem doloribus neque ducimus ut hic.',
+                    visibility: 'public',
+                    full_name: 'platform / hardware / bsp / kernel / common / v4.1',
+                    relative_path: '/platform/hardware/bsp/kernel/common/v4.1',
+                    can_edit: true,
+                    type: 'project',
+                    avatar_url: null,
+                    permission: null,
+                    edit_path: '/platform/hardware/bsp/kernel/common/v4.1/edit',
+                    star_count: 0,
+                  },
+                ],
+              },
+            ],
+          },
+        ],
+      },
+    ],
+  },
+];
+
+export const mockRawPageInfo = {
+  'x-per-page': 10,
+  'x-page': 10,
+  'x-total': 10,
+  'x-total-pages': 10,
+  'x-next-page': 10,
+  'x-prev-page': 10,
 };
 
-export { groupsData, group1 };
+export const mockPageInfo = {
+  perPage: 10,
+  page: 10,
+  total: 10,
+  totalPages: 10,
+  nextPage: 10,
+  prevPage: 10,
+};
diff --git a/spec/javascripts/groups/service/groups_service_spec.js b/spec/javascripts/groups/service/groups_service_spec.js
new file mode 100644
index 00000000000..20bb63687f7
--- /dev/null
+++ b/spec/javascripts/groups/service/groups_service_spec.js
@@ -0,0 +1,42 @@
+import Vue from 'vue';
+import VueResource from 'vue-resource';
+
+import GroupsService from '~/groups/service/groups_service';
+import { mockEndpoint, mockParentGroupItem } from '../mock_data';
+
+Vue.use(VueResource);
+
+describe('GroupsService', () => {
+  let service;
+
+  beforeEach(() => {
+    service = new GroupsService(mockEndpoint);
+  });
+
+  describe('getGroups', () => {
+    it('should return promise for `GET` request on provided endpoint', () => {
+      spyOn(service.groups, 'get').and.stub();
+      const queryParams = {
+        page: 2,
+        filter: 'git',
+        sort: 'created_asc',
+        archived: true,
+      };
+
+      service.getGroups(55, 2, 'git', 'created_asc', true);
+      expect(service.groups.get).toHaveBeenCalledWith({ parent_id: 55 });
+
+      service.getGroups(null, 2, 'git', 'created_asc', true);
+      expect(service.groups.get).toHaveBeenCalledWith(queryParams);
+    });
+  });
+
+  describe('leaveGroup', () => {
+    it('should return promise for `DELETE` request on provided endpoint', () => {
+      spyOn(Vue.http, 'delete').and.stub();
+
+      service.leaveGroup(mockParentGroupItem.leavePath);
+      expect(Vue.http.delete).toHaveBeenCalledWith(mockParentGroupItem.leavePath);
+    });
+  });
+});
diff --git a/spec/javascripts/groups/store/groups_store_spec.js b/spec/javascripts/groups/store/groups_store_spec.js
new file mode 100644
index 00000000000..d74f38f476e
--- /dev/null
+++ b/spec/javascripts/groups/store/groups_store_spec.js
@@ -0,0 +1,110 @@
+import GroupsStore from '~/groups/store/groups_store';
+import {
+  mockGroups, mockSearchedGroups,
+  mockParentGroupItem, mockRawChildren,
+  mockRawPageInfo,
+} from '../mock_data';
+
+describe('ProjectsStore', () => {
+  describe('constructor', () => {
+    it('should initialize default state', () => {
+      let store;
+
+      store = new GroupsStore();
+      expect(Object.keys(store.state).length).toBe(2);
+      expect(Array.isArray(store.state.groups)).toBeTruthy();
+      expect(Object.keys(store.state.pageInfo).length).toBe(0);
+      expect(store.hideProjects).not.toBeDefined();
+
+      store = new GroupsStore(true);
+      expect(store.hideProjects).toBeTruthy();
+    });
+  });
+
+  describe('setGroups', () => {
+    it('should set groups to state', () => {
+      const store = new GroupsStore();
+      spyOn(store, 'formatGroupItem').and.callThrough();
+
+      store.setGroups(mockGroups);
+      expect(store.state.groups.length).toBe(mockGroups.length);
+      expect(store.formatGroupItem).toHaveBeenCalledWith(jasmine.any(Object));
+      expect(Object.keys(store.state.groups[0]).indexOf('fullName') > -1).toBeTruthy();
+    });
+  });
+
+  describe('setSearchedGroups', () => {
+    it('should set searched groups to state', () => {
+      const store = new GroupsStore();
+      spyOn(store, 'formatGroupItem').and.callThrough();
+
+      store.setSearchedGroups(mockSearchedGroups);
+      expect(store.state.groups.length).toBe(mockSearchedGroups.length);
+      expect(store.formatGroupItem).toHaveBeenCalledWith(jasmine.any(Object));
+      expect(Object.keys(store.state.groups[0]).indexOf('fullName') > -1).toBeTruthy();
+      expect(Object.keys(store.state.groups[0].children[0]).indexOf('fullName') > -1).toBeTruthy();
+    });
+  });
+
+  describe('setGroupChildren', () => {
+    it('should set children to group item in state', () => {
+      const store = new GroupsStore();
+      spyOn(store, 'formatGroupItem').and.callThrough();
+
+      store.setGroupChildren(mockParentGroupItem, mockRawChildren);
+      expect(store.formatGroupItem).toHaveBeenCalledWith(jasmine.any(Object));
+      expect(mockParentGroupItem.children.length).toBe(1);
+      expect(Object.keys(mockParentGroupItem.children[0]).indexOf('fullName') > -1).toBeTruthy();
+      expect(mockParentGroupItem.isOpen).toBeTruthy();
+      expect(mockParentGroupItem.isChildrenLoading).toBeFalsy();
+    });
+  });
+
+  describe('setPaginationInfo', () => {
+    it('should parse and set pagination info in state', () => {
+      const store = new GroupsStore();
+
+      store.setPaginationInfo(mockRawPageInfo);
+      expect(store.state.pageInfo.perPage).toBe(10);
+      expect(store.state.pageInfo.page).toBe(10);
+      expect(store.state.pageInfo.total).toBe(10);
+      expect(store.state.pageInfo.totalPages).toBe(10);
+      expect(store.state.pageInfo.nextPage).toBe(10);
+      expect(store.state.pageInfo.previousPage).toBe(10);
+    });
+  });
+
+  describe('formatGroupItem', () => {
+    it('should parse group item object and return updated object', () => {
+      let store;
+      let updatedGroupItem;
+
+      store = new GroupsStore();
+      updatedGroupItem = store.formatGroupItem(mockRawChildren[0]);
+      expect(Object.keys(updatedGroupItem).indexOf('fullName') > -1).toBeTruthy();
+      expect(updatedGroupItem.childrenCount).toBe(mockRawChildren[0].children_count);
+      expect(updatedGroupItem.isChildrenLoading).toBe(false);
+      expect(updatedGroupItem.isBeingRemoved).toBe(false);
+
+      store = new GroupsStore(true);
+      updatedGroupItem = store.formatGroupItem(mockRawChildren[0]);
+      expect(Object.keys(updatedGroupItem).indexOf('fullName') > -1).toBeTruthy();
+      expect(updatedGroupItem.childrenCount).toBe(mockRawChildren[0].subgroup_count);
+    });
+  });
+
+  describe('removeGroup', () => {
+    it('should remove children from group item in state', () => {
+      const store = new GroupsStore();
+      const rawParentGroup = Object.assign({}, mockGroups[0]);
+      const rawChildGroup = Object.assign({}, mockGroups[1]);
+
+      store.setGroups([rawParentGroup]);
+      store.setGroupChildren(store.state.groups[0], [rawChildGroup]);
+      const childItem = store.state.groups[0].children[0];
+
+      store.removeGroup(childItem, store.state.groups[0]);
+      expect(store.state.groups[0].children.length).toBe(0);
+    });
+  });
+});