1 files changed, 23 insertions, 0 deletions
diff --git a/spec/frontend/vue_shared/components/diff_viewer/viewers/mode_changed_spec.js b/spec/frontend/vue_shared/components/diff_viewer/viewers/mode_changed_spec.js
new file mode 100644
index 00000000000..c4358f0d9cb
--- /dev/null
+++ b/spec/frontend/vue_shared/components/diff_viewer/viewers/mode_changed_spec.js
@@ -0,0 +1,23 @@
+import { shallowMount } from '@vue/test-utils';
+import ModeChanged from '~/vue_shared/components/diff_viewer/viewers/mode_changed.vue';
+
+describe('Diff viewer mode changed component', () => {
+  let vm;
+
+  beforeEach(() => {
+    vm = shallowMount(ModeChanged, {
+      propsData: {
+        aMode: '123',
+        bMode: '321',
+      },
+    });
+  });
+
+  afterEach(() => {
+    vm.destroy();
+  });
+
+  it('renders aMode & bMode', () => {
+    expect(vm.text()).toContain('File mode changed from 123 to 321');
+  });
+});