1 files changed, 98 insertions, 0 deletions
diff --git a/spec/frontend/pages/milestones/shared/components/promote_milestone_modal_spec.js b/spec/frontend/pages/milestones/shared/components/promote_milestone_modal_spec.js
new file mode 100644
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+++ b/spec/frontend/pages/milestones/shared/components/promote_milestone_modal_spec.js
@@ -0,0 +1,98 @@
+import Vue from 'vue';
+import mountComponent from 'helpers/vue_mount_component_helper';
+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';
+
+describe('Promote milestone modal', () => {
+  let vm;
+  const Component = Vue.extend(promoteMilestoneModal);
+  const milestoneMockData = {
+    milestoneTitle: 'v1.0',
+    url: `${gl.TEST_HOST}/dummy/promote/milestones`,
+    groupName: 'group',
+  };
+
+  describe('Modal title and description', () => {
+    beforeEach(() => {
+      vm = mountComponent(Component, milestoneMockData);
+    });
+
+    afterEach(() => {
+      vm.$destroy();
+    });
+
+    it('contains the proper description', () => {
+      expect(vm.text).toContain(
+        `Promoting ${milestoneMockData.milestoneTitle} will make it available for all projects inside ${milestoneMockData.groupName}.`,
+      );
+    });
+
+    it('contains the correct title', () => {
+      expect(vm.title).toEqual('Promote v1.0 to group milestone?');
+    });
+  });
+
+  describe('When requesting a milestone promotion', () => {
+    beforeEach(() => {
+      vm = mountComponent(Component, {
+        ...milestoneMockData,
+      });
+      jest.spyOn(eventHub, '$emit').mockImplementation(() => {});
+    });
+
+    afterEach(() => {
+      vm.$destroy();
+    });
+
+    it('redirects when a milestone is promoted', done => {
+      const responseURL = `${gl.TEST_HOST}/dummy/endpoint`;
+      jest.spyOn(axios, 'post').mockImplementation(url => {
+        expect(url).toBe(milestoneMockData.url);
+        expect(eventHub.$emit).toHaveBeenCalledWith(
+          'promoteMilestoneModal.requestStarted',
+          milestoneMockData.url,
+        );
+        return Promise.resolve({
+          request: {
+            responseURL,
+          },
+        });
+      });
+
+      vm.onSubmit()
+        .then(() => {
+          expect(eventHub.$emit).toHaveBeenCalledWith('promoteMilestoneModal.requestFinished', {
+            milestoneUrl: milestoneMockData.url,
+            successful: true,
+          });
+        })
+        .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 };
+      jest.spyOn(axios, 'post').mockImplementation(url => {
+        expect(url).toBe(milestoneMockData.url);
+        expect(eventHub.$emit).toHaveBeenCalledWith(
+          'promoteMilestoneModal.requestStarted',
+          milestoneMockData.url,
+        );
+        return Promise.reject(dummyError);
+      });
+
+      vm.onSubmit()
+        .catch(error => {
+          expect(error).toBe(dummyError);
+          expect(eventHub.$emit).toHaveBeenCalledWith('promoteMilestoneModal.requestFinished', {
+            milestoneUrl: milestoneMockData.url,
+            successful: false,
+          });
+        })
+        .then(done)
+        .catch(done.fail);
+    });
+  });
+});