1 files changed, 31 insertions, 0 deletions
diff --git a/spec/frontend/vue_mr_widget/components/extensions/index_spec.js b/spec/frontend/vue_mr_widget/components/extensions/index_spec.js
new file mode 100644
index 00000000000..8f6fe3cd37a
--- /dev/null
+++ b/spec/frontend/vue_mr_widget/components/extensions/index_spec.js
@@ -0,0 +1,31 @@
+import { registerExtension, extensions } from '~/vue_merge_request_widget/components/extensions';
+import ExtensionBase from '~/vue_merge_request_widget/components/extensions/base.vue';
+
+describe('MR widget extension registering', () => {
+  it('registers a extension', () => {
+    registerExtension({
+      name: 'Test',
+      props: ['helloWorld'],
+      computed: {
+        test() {},
+      },
+      methods: {
+        test() {},
+      },
+    });
+
+    expect(extensions[0]).toEqual(
+      expect.objectContaining({
+        extends: ExtensionBase,
+        name: 'Test',
+        props: ['helloWorld'],
+        computed: {
+          test: expect.any(Function),
+        },
+        methods: {
+          test: expect.any(Function),
+        },
+      }),
+    );
+  });
+});