1 files changed, 81 insertions, 0 deletions
diff --git a/spec/frontend/merge_request/components/status_box_spec.js b/spec/frontend/merge_request/components/status_box_spec.js
new file mode 100644
index 00000000000..e6b6512476b
--- /dev/null
+++ b/spec/frontend/merge_request/components/status_box_spec.js
@@ -0,0 +1,81 @@
+import { nextTick } from 'vue';
+import { shallowMount } from '@vue/test-utils';
+import { GlSprintf } from '@gitlab/ui';
+import StatusBox from '~/merge_request/components/status_box.vue';
+import mrEventHub from '~/merge_request/eventhub';
+
+let wrapper;
+
+function factory(propsData) {
+  wrapper = shallowMount(StatusBox, { propsData, stubs: { GlSprintf } });
+}
+
+const testCases = [
+  {
+    name: 'Open',
+    state: 'opened',
+    class: 'status-box-open',
+    icon: 'issue-open-m',
+  },
+  {
+    name: 'Closed',
+    state: 'closed',
+    class: 'status-box-mr-closed',
+    icon: 'close',
+  },
+  {
+    name: 'Merged',
+    state: 'merged',
+    class: 'status-box-mr-merged',
+    icon: 'git-merge',
+  },
+];
+
+describe('Merge request status box component', () => {
+  afterEach(() => {
+    wrapper.destroy();
+    wrapper = null;
+  });
+
+  testCases.forEach((testCase) => {
+    describe(`when merge request is ${testCase.name}`, () => {
+      it('renders human readable test', () => {
+        factory({
+          initialState: testCase.state,
+        });
+
+        expect(wrapper.text()).toContain(testCase.name);
+      });
+
+      it('sets css class', () => {
+        factory({
+          initialState: testCase.state,
+        });
+
+        expect(wrapper.classes()).toContain(testCase.class);
+      });
+
+      it('renders icon', () => {
+        factory({
+          initialState: testCase.state,
+        });
+
+        expect(wrapper.find('[data-testid="status-icon"]').props('name')).toBe(testCase.icon);
+      });
+    });
+  });
+
+  it('updates with eventhub event', async () => {
+    factory({
+      initialState: 'opened',
+    });
+
+    expect(wrapper.text()).toContain('Open');
+
+    mrEventHub.$emit('mr.state.updated', { state: 'closed' });
+
+    await nextTick();
+
+    expect(wrapper.text()).toContain('Closed');
+  });
+});