1 files changed, 54 insertions, 0 deletions
diff --git a/src/pybind/mgr/dashboard/frontend/src/app/shared/services/feature-toggles.service.spec.ts b/src/pybind/mgr/dashboard/frontend/src/app/shared/services/feature-toggles.service.spec.ts
new file mode 100644
index 000000000..ddb888851
--- /dev/null
+++ b/src/pybind/mgr/dashboard/frontend/src/app/shared/services/feature-toggles.service.spec.ts
@@ -0,0 +1,54 @@
+import { HttpClientTestingModule, HttpTestingController } from '@angular/common/http/testing';
+import { discardPeriodicTasks, fakeAsync, TestBed, tick } from '@angular/core/testing';
+
+import { configureTestBed } from '~/testing/unit-test-helper';
+import { FeatureTogglesService } from './feature-toggles.service';
+
+describe('FeatureTogglesService', () => {
+  let httpTesting: HttpTestingController;
+  let service: FeatureTogglesService;
+
+  configureTestBed({
+    providers: [FeatureTogglesService],
+    imports: [HttpClientTestingModule]
+  });
+
+  beforeEach(() => {
+    service = TestBed.inject(FeatureTogglesService);
+    httpTesting = TestBed.inject(HttpTestingController);
+  });
+
+  afterEach(() => {
+    httpTesting.verify();
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+
+  it('should fetch HTTP endpoint once and only once', fakeAsync(() => {
+    const mockFeatureTogglesMap = [
+      {
+        rbd: true,
+        mirroring: true,
+        iscsi: true,
+        cephfs: true,
+        rgw: true
+      }
+    ];
+
+    service
+      .get()
+      .subscribe((featureTogglesMap) => expect(featureTogglesMap).toEqual(mockFeatureTogglesMap));
+    tick();
+
+    // Second subscription shouldn't trigger a new HTTP request
+    service
+      .get()
+      .subscribe((featureTogglesMap) => expect(featureTogglesMap).toEqual(mockFeatureTogglesMap));
+
+    const req = httpTesting.expectOne(service.API_URL);
+    req.flush(mockFeatureTogglesMap);
+    discardPeriodicTasks();
+  }));
+});