fix(ui): Modernize response time chart (#1373)

api/chart_test.go

@@ -81,3 +81,69 @@ func TestResponseTimeChart(t *testing.T) {
 		})
 	}
 }
+
+func TestResponseTimeHistory(t *testing.T) {
+	defer store.Get().Clear()
+	defer cache.Clear()
+	cfg := &config.Config{
+		Metrics: true,
+		Endpoints: []*endpoint.Endpoint{
+			{
+				Name:  "frontend",
+				Group: "core",
+			},
+			{
+				Name:  "backend",
+				Group: "core",
+			},
+		},
+	}
+	watchdog.UpdateEndpointStatus(cfg.Endpoints[0], &endpoint.Result{Success: true, Duration: time.Millisecond, Timestamp: time.Now()})
+	watchdog.UpdateEndpointStatus(cfg.Endpoints[1], &endpoint.Result{Success: false, Duration: time.Second, Timestamp: time.Now()})
+	api := New(cfg)
+	router := api.Router()
+	type Scenario struct {
+		Name         string
+		Path         string
+		ExpectedCode int
+	}
+	scenarios := []Scenario{
+		{
+			Name:         "history-response-time-24h",
+			Path:         "/api/v1/endpoints/core_backend/response-times/24h/history",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "history-response-time-7d",
+			Path:         "/api/v1/endpoints/core_frontend/response-times/7d/history",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "history-response-time-30d",
+			Path:         "/api/v1/endpoints/core_frontend/response-times/30d/history",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "history-response-time-with-invalid-duration",
+			Path:         "/api/v1/endpoints/core_backend/response-times/3d/history",
+			ExpectedCode: http.StatusBadRequest,
+		},
+		{
+			Name:         "history-response-time-for-invalid-key",
+			Path:         "/api/v1/endpoints/invalid_key/response-times/7d/history",
+			ExpectedCode: http.StatusNotFound,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			request := httptest.NewRequest("GET", scenario.Path, http.NoBody)
+			response, err := router.Test(request)
+			if err != nil {
+				t.Fatal(err)
+			}
+			if response.StatusCode != scenario.ExpectedCode {
+				t.Errorf("%s %s should have returned %d, but returned %d instead", request.Method, request.URL, scenario.ExpectedCode, response.StatusCode)
+			}
+		})
+	}
+}