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diff --git a/spec/frontend/vue_merge_request_widget/components/states/mr_widget_merged_spec.js b/spec/frontend/vue_merge_request_widget/components/states/mr_widget_merged_spec.js
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+++ b/spec/frontend/vue_merge_request_widget/components/states/mr_widget_merged_spec.js
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+import { getByRole } from '@testing-library/dom';
+import Vue from 'vue';
+import mountComponent from 'helpers/vue_mount_component_helper';
+import waitForPromises from 'helpers/wait_for_promises';
+import { OPEN_REVERT_MODAL, OPEN_CHERRY_PICK_MODAL } from '~/projects/commit/constants';
+import modalEventHub from '~/projects/commit/event_hub';
+import mergedComponent from '~/vue_merge_request_widget/components/states/mr_widget_merged.vue';
+import eventHub from '~/vue_merge_request_widget/event_hub';
+
+describe('MRWidgetMerged', () => {
+  let vm;
+  const targetBranch = 'foo';
+
+  beforeEach(() => {
+    jest.spyOn(document, 'dispatchEvent');
+    const Component = Vue.extend(mergedComponent);
+    const mr = {
+      isRemovingSourceBranch: false,
+      cherryPickInForkPath: false,
+      canCherryPickInCurrentMR: true,
+      revertInForkPath: false,
+      canRevertInCurrentMR: true,
+      canRemoveSourceBranch: true,
+      sourceBranchRemoved: true,
+      metrics: {
+        mergedBy: {
+          name: 'Administrator',
+          username: 'root',
+          webUrl: 'http://localhost:3000/root',
+          avatarUrl:
+            'http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon',
+        },
+        mergedAt: 'Jan 24, 2018 1:02pm UTC',
+        readableMergedAt: '',
+        closedBy: {},
+        closedAt: 'Jan 24, 2018 1:02pm UTC',
+        readableClosedAt: '',
+      },
+      updatedAt: 'mergedUpdatedAt',
+      shortMergeCommitSha: '958c0475',
+      mergeCommitSha: '958c047516e182dfc52317f721f696e8a1ee85ed',
+      mergeCommitPath:
+        'http://localhost:3000/root/nautilus/commit/f7ce827c314c9340b075657fd61c789fb01cf74d',
+      sourceBranch: 'bar',
+      targetBranch,
+    };
+
+    const service = {
+      removeSourceBranch() {},
+    };
+
+    jest.spyOn(eventHub, '$emit').mockImplementation(() => {});
+
+    vm = mountComponent(Component, { mr, service });
+  });
+
+  afterEach(() => {
+    vm.$destroy();
+  });
+
+  describe('computed', () => {
+    describe('shouldShowRemoveSourceBranch', () => {
+      it('returns true when sourceBranchRemoved is false', () => {
+        vm.mr.sourceBranchRemoved = false;
+
+        expect(vm.shouldShowRemoveSourceBranch).toEqual(true);
+      });
+
+      it('returns false when sourceBranchRemoved is true', () => {
+        vm.mr.sourceBranchRemoved = true;
+
+        expect(vm.shouldShowRemoveSourceBranch).toEqual(false);
+      });
+
+      it('returns false when canRemoveSourceBranch is false', () => {
+        vm.mr.sourceBranchRemoved = false;
+        vm.mr.canRemoveSourceBranch = false;
+
+        expect(vm.shouldShowRemoveSourceBranch).toEqual(false);
+      });
+
+      it('returns false when is making request', () => {
+        vm.mr.canRemoveSourceBranch = true;
+        vm.isMakingRequest = true;
+
+        expect(vm.shouldShowRemoveSourceBranch).toEqual(false);
+      });
+
+      it('returns true when all are true', () => {
+        vm.mr.isRemovingSourceBranch = true;
+        vm.mr.canRemoveSourceBranch = true;
+        vm.isMakingRequest = true;
+
+        expect(vm.shouldShowRemoveSourceBranch).toEqual(false);
+      });
+    });
+
+    describe('shouldShowSourceBranchRemoving', () => {
+      it('should correct value when fields changed', () => {
+        vm.mr.sourceBranchRemoved = false;
+
+        expect(vm.shouldShowSourceBranchRemoving).toEqual(false);
+
+        vm.mr.sourceBranchRemoved = true;
+
+        expect(vm.shouldShowRemoveSourceBranch).toEqual(false);
+
+        vm.mr.sourceBranchRemoved = false;
+        vm.isMakingRequest = true;
+
+        expect(vm.shouldShowSourceBranchRemoving).toEqual(true);
+
+        vm.isMakingRequest = false;
+        vm.mr.isRemovingSourceBranch = true;
+
+        expect(vm.shouldShowSourceBranchRemoving).toEqual(true);
+      });
+    });
+  });
+
+  describe('methods', () => {
+    describe('removeSourceBranch', () => {
+      it('should set flag and call service then request main component to update the widget', async () => {
+        jest.spyOn(vm.service, 'removeSourceBranch').mockReturnValue(
+          new Promise((resolve) => {
+            resolve({
+              data: {
+                message: 'Branch was deleted',
+              },
+            });
+          }),
+        );
+
+        vm.removeSourceBranch();
+
+        await waitForPromises();
+
+        const args = eventHub.$emit.mock.calls[0];
+
+        expect(vm.isMakingRequest).toEqual(true);
+        expect(args[0]).toEqual('MRWidgetUpdateRequested');
+        expect(args[1]).not.toThrow();
+      });
+    });
+  });
+
+  it('calls dispatchDocumentEvent to load in the modal component', () => {
+    expect(document.dispatchEvent).toHaveBeenCalledWith(new CustomEvent('merged:UpdateActions'));
+  });
+
+  it('emits event to open the revert modal on revert button click', () => {
+    const eventHubSpy = jest.spyOn(modalEventHub, '$emit');
+
+    getByRole(vm.$el, 'button', { name: /Revert/i }).click();
+
+    expect(eventHubSpy).toHaveBeenCalledWith(OPEN_REVERT_MODAL);
+  });
+
+  it('emits event to open the cherry-pick modal on cherry-pick button click', () => {
+    const eventHubSpy = jest.spyOn(modalEventHub, '$emit');
+
+    getByRole(vm.$el, 'button', { name: /Cherry-pick/i }).click();
+
+    expect(eventHubSpy).toHaveBeenCalledWith(OPEN_CHERRY_PICK_MODAL);
+  });
+
+  it('has merged by information', () => {
+    expect(vm.$el.textContent).toContain('Merged by');
+    expect(vm.$el.textContent).toContain('Administrator');
+  });
+
+  it('shows revert and cherry-pick buttons', () => {
+    expect(vm.$el.textContent).toContain('Revert');
+    expect(vm.$el.textContent).toContain('Cherry-pick');
+  });
+
+  it('should use mergedEvent mergedAt as tooltip title', () => {
+    expect(vm.$el.querySelector('time').getAttribute('title')).toBe('Jan 24, 2018 1:02pm UTC');
+  });
+});