1 files changed, 95 insertions, 0 deletions
diff --git a/spec/javascripts/pages/milestones/shared/components/promote_milestone_modal_spec.js b/spec/javascripts/pages/milestones/shared/components/promote_milestone_modal_spec.js
new file mode 100644
index 00000000000..f201edddce0
--- /dev/null
+++ b/spec/javascripts/pages/milestones/shared/components/promote_milestone_modal_spec.js
@@ -0,0 +1,95 @@
+import Vue from 'vue';
+import promoteMilestoneModal from '~/pages/milestones/shared/components/promote_milestone_modal.vue';
+import eventHub from '~/pages/milestones/shared/event_hub';
+import axios from '~/lib/utils/axios_utils';
+import * as urlUtility from '~/lib/utils/url_utility';
+import mountComponent from '../../../../helpers/vue_mount_component_helper';
+
+describe('Promote milestone modal', () => {
+  let vm;
+  let Component;
+  const milestoneMockData = {
+    milestoneTitle: 'v1.0',
+    url: `${gl.TEST_HOST}/dummy/endpoint`,
+  };
+
+  beforeEach(() => {
+    Component = Vue.extend(promoteMilestoneModal);
+  });
+
+  describe('Modal title and description', () => {
+    beforeEach(() => {
+      vm = mountComponent(Component, {
+        ...milestoneMockData,
+      });
+    });
+
+    afterEach(() => {
+      vm.$destroy();
+    });
+
+    it('should contain the proper description', () => {
+      expect(vm.text).toContain('Promoting this milestone will make it available for all projects inside the group.');
+      expect(vm.text).toContain('Existing project milestones with the same name will be merged.');
+      expect(vm.text).toContain('This action cannot be reversed.');
+    });
+
+    it('should contain the correct title', () => {
+      expect(vm.title).toEqual('Promote v1.0 to group milestone?');
+    });
+  });
+
+  describe('When requesting a milestone promotion', () => {
+    beforeEach(() => {
+      vm = mountComponent(Component, {
+        ...milestoneMockData,
+      });
+      spyOn(eventHub, '$emit');
+    });
+
+    afterEach(() => {
+      vm.$destroy();
+    });
+
+    it('should redirect when a milestone is promoted', (done) => {
+      const responseURL = `${gl.TEST_HOST}/dummy/endpoint`;
+      spyOn(axios, 'post').and.callFake((url) => {
+        expect(url).toBe(milestoneMockData.url);
+        expect(eventHub.$emit).toHaveBeenCalledWith('promoteMilestoneModal.requestStarted', milestoneMockData.url);
+        return Promise.resolve({
+          request: {
+            responseURL,
+          },
+        });
+      });
+      const redirectSpy = spyOn(urlUtility, 'redirectTo');
+
+      vm.onSubmit()
+        .then(() => {
+          expect(redirectSpy).toHaveBeenCalledWith(responseURL);
+        })
+        .then(done)
+        .catch(done.fail);
+    });
+
+    it('displays an error if promoting a milestone failed', (done) => {
+      const dummyError = new Error('promoting milestone failed');
+      dummyError.response = { status: 500 };
+      spyOn(axios, 'post').and.callFake((url) => {
+        expect(url).toBe(milestoneMockData.url);
+        expect(eventHub.$emit).toHaveBeenCalledWith('promoteMilestoneModal.requestStarted', milestoneMockData.url);
+        return Promise.reject(dummyError);
+      });
+      const redirectSpy = spyOn(urlUtility, 'redirectTo');
+
+      vm.onSubmit()
+        .catch((error) => {
+          expect(error).toBe(dummyError);
+          expect(redirectSpy).not.toHaveBeenCalled();
+          expect(eventHub.$emit).toHaveBeenCalledWith('promoteMilestoneModal.requestFinished', { milestoneUrl: milestoneMockData.url, successful: false });
+        })
+        .then(done)
+        .catch(done.fail);
+    });
+  });
+});