1 files changed, 68 insertions, 0 deletions
diff --git a/spec/frontend/performance_bar/services/performance_bar_service_spec.js b/spec/frontend/performance_bar/services/performance_bar_service_spec.js
new file mode 100644
index 00000000000..cfec4b779e4
--- /dev/null
+++ b/spec/frontend/performance_bar/services/performance_bar_service_spec.js
@@ -0,0 +1,68 @@
+import PerformanceBarService from '~/performance_bar/services/performance_bar_service';
+
+describe('PerformanceBarService', () => {
+  describe('callbackParams', () => {
+    describe('fireCallback', () => {
+      function fireCallback(response, peekUrl) {
+        return PerformanceBarService.callbackParams(response, peekUrl)[0];
+      }
+
+      it('returns false when the request URL is the peek URL', () => {
+        expect(
+          fireCallback({ headers: { 'x-request-id': '123' }, url: '/peek' }, '/peek'),
+        ).toBeFalsy();
+      });
+
+      it('returns false when there is no request ID', () => {
+        expect(fireCallback({ headers: {}, url: '/request' }, '/peek')).toBeFalsy();
+      });
+
+      it('returns false when the request is an API request', () => {
+        expect(
+          fireCallback({ headers: { 'x-request-id': '123' }, url: '/api/' }, '/peek'),
+        ).toBeFalsy();
+      });
+
+      it('returns false when the response is from the cache', () => {
+        expect(
+          fireCallback(
+            { headers: { 'x-request-id': '123', 'x-gitlab-from-cache': 'true' }, url: '/request' },
+            '/peek',
+          ),
+        ).toBeFalsy();
+      });
+
+      it('returns true when all conditions are met', () => {
+        expect(
+          fireCallback({ headers: { 'x-request-id': '123' }, url: '/request' }, '/peek'),
+        ).toBeTruthy();
+      });
+    });
+
+    describe('requestId', () => {
+      function requestId(response, peekUrl) {
+        return PerformanceBarService.callbackParams(response, peekUrl)[1];
+      }
+
+      it('gets the request ID from the headers', () => {
+        expect(requestId({ headers: { 'x-request-id': '123' } }, '/peek')).toEqual('123');
+      });
+    });
+
+    describe('requestUrl', () => {
+      function requestUrl(response, peekUrl) {
+        return PerformanceBarService.callbackParams(response, peekUrl)[2];
+      }
+
+      it('gets the request URL from the response object', () => {
+        expect(requestUrl({ headers: {}, url: '/request' }, '/peek')).toEqual('/request');
+      });
+
+      it('gets the request URL from response.config if present', () => {
+        expect(
+          requestUrl({ headers: {}, config: { url: '/config-url' }, url: '/request' }, '/peek'),
+        ).toEqual('/config-url');
+      });
+    });
+  });
+});