1 files changed, 20 insertions, 0 deletions
diff --git a/spec/frontend/performance_bar/components/performance_bar_app_spec.js b/spec/frontend/performance_bar/components/performance_bar_app_spec.js
new file mode 100644
index 00000000000..ba403dd6209
--- /dev/null
+++ b/spec/frontend/performance_bar/components/performance_bar_app_spec.js
@@ -0,0 +1,20 @@
+import PerformanceBarApp from '~/performance_bar/components/performance_bar_app.vue';
+import PerformanceBarStore from '~/performance_bar/stores/performance_bar_store';
+import { shallowMount } from '@vue/test-utils';
+
+describe('performance bar app', () => {
+  const store = new PerformanceBarStore();
+  const wrapper = shallowMount(PerformanceBarApp, {
+    propsData: {
+      store,
+      env: 'development',
+      requestId: '123',
+      peekUrl: '/-/peek/results',
+      profileUrl: '?lineprofiler=true',
+    },
+  });
+
+  it('sets the class to match the environment', () => {
+    expect(wrapper.element.getAttribute('class')).toContain('development');
+  });
+});