1 files changed, 134 insertions, 0 deletions
diff --git a/spec/frontend/search/topbar/components/project_filter_spec.js b/spec/frontend/search/topbar/components/project_filter_spec.js
new file mode 100644
index 00000000000..c1fc61d7e89
--- /dev/null
+++ b/spec/frontend/search/topbar/components/project_filter_spec.js
@@ -0,0 +1,134 @@
+import Vuex from 'vuex';
+import { createLocalVue, shallowMount } from '@vue/test-utils';
+import { MOCK_PROJECT, MOCK_QUERY } from 'jest/search/mock_data';
+import { visitUrl, setUrlParams } from '~/lib/utils/url_utility';
+import ProjectFilter from '~/search/topbar/components/project_filter.vue';
+import SearchableDropdown from '~/search/topbar/components/searchable_dropdown.vue';
+import { ANY_OPTION, GROUP_DATA, PROJECT_DATA } from '~/search/topbar/constants';
+
+const localVue = createLocalVue();
+localVue.use(Vuex);
+
+jest.mock('~/lib/utils/url_utility', () => ({
+  visitUrl: jest.fn(),
+  setUrlParams: jest.fn(),
+}));
+
+describe('ProjectFilter', () => {
+  let wrapper;
+
+  const actionSpies = {
+    fetchProjects: jest.fn(),
+  };
+
+  const defaultProps = {
+    initialData: null,
+  };
+
+  const createComponent = (initialState, props) => {
+    const store = new Vuex.Store({
+      state: {
+        query: MOCK_QUERY,
+        ...initialState,
+      },
+      actions: actionSpies,
+    });
+
+    wrapper = shallowMount(ProjectFilter, {
+      localVue,
+      store,
+      propsData: {
+        ...defaultProps,
+        ...props,
+      },
+    });
+  };
+
+  afterEach(() => {
+    wrapper.destroy();
+    wrapper = null;
+  });
+
+  const findSearchableDropdown = () => wrapper.find(SearchableDropdown);
+
+  describe('template', () => {
+    beforeEach(() => {
+      createComponent();
+    });
+
+    it('renders SearchableDropdown always', () => {
+      expect(findSearchableDropdown().exists()).toBe(true);
+    });
+  });
+
+  describe('events', () => {
+    beforeEach(() => {
+      createComponent();
+    });
+
+    describe('when @search is emitted', () => {
+      const search = 'test';
+
+      beforeEach(() => {
+        findSearchableDropdown().vm.$emit('search', search);
+      });
+
+      it('calls fetchProjects with the search paramter', () => {
+        expect(actionSpies.fetchProjects).toHaveBeenCalledWith(expect.any(Object), search);
+      });
+    });
+
+    describe('when @change is emitted', () => {
+      describe('with Any', () => {
+        beforeEach(() => {
+          findSearchableDropdown().vm.$emit('change', ANY_OPTION);
+        });
+
+        it('calls setUrlParams with project id, not group id, then calls visitUrl', () => {
+          expect(setUrlParams).toHaveBeenCalledWith({
+            [PROJECT_DATA.queryParam]: ANY_OPTION.id,
+          });
+          expect(visitUrl).toHaveBeenCalled();
+        });
+      });
+
+      describe('with a Project', () => {
+        beforeEach(() => {
+          findSearchableDropdown().vm.$emit('change', MOCK_PROJECT);
+        });
+
+        it('calls setUrlParams with project id, group id, then calls visitUrl', () => {
+          expect(setUrlParams).toHaveBeenCalledWith({
+            [GROUP_DATA.queryParam]: MOCK_PROJECT.namespace_id,
+            [PROJECT_DATA.queryParam]: MOCK_PROJECT.id,
+          });
+          expect(visitUrl).toHaveBeenCalled();
+        });
+      });
+    });
+  });
+
+  describe('computed', () => {
+    describe('selectedProject', () => {
+      describe('when initialData is null', () => {
+        beforeEach(() => {
+          createComponent();
+        });
+
+        it('sets selectedProject to ANY_OPTION', () => {
+          expect(wrapper.vm.selectedProject).toBe(ANY_OPTION);
+        });
+      });
+
+      describe('when initialData is set', () => {
+        beforeEach(() => {
+          createComponent({}, { initialData: MOCK_PROJECT });
+        });
+
+        it('sets selectedProject to the initialData', () => {
+          expect(wrapper.vm.selectedProject).toBe(MOCK_PROJECT);
+        });
+      });
+    });
+  });
+});