Add tests

pkg/controllerapi/controllerapi_test.go

@@ -0,0 +1,106 @@
+package controllerapi_test
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"github.com/tsuru/nginx-operator/api/v1alpha1"
+	"github.com/tsuru/rpaas-operator/pkg/controllerapi"
+	extensionsruntime "github.com/tsuru/rpaas-operator/pkg/runtime"
+	coreV1 "k8s.io/api/core/v1"
+	metaV1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	"sigs.k8s.io/controller-runtime/pkg/client/fake"
+)
+
+func TestPrometheusDiscover(t *testing.T) {
+
+	nginx1 := &v1alpha1.Nginx{
+		ObjectMeta: metaV1.ObjectMeta{
+			Name:      "test",
+			Namespace: "default",
+		},
+		Spec: v1alpha1.NginxSpec{
+			TLS: []v1alpha1.NginxTLS{
+				{
+					Hosts: []string{"test.internal"},
+				},
+				{
+					Hosts: []string{"hello.globo"},
+				},
+			},
+		},
+		Status: v1alpha1.NginxStatus{
+			Services: []v1alpha1.ServiceStatus{
+				{
+					Name: "test",
+				},
+			},
+		},
+	}
+
+	svc1 := &coreV1.Service{
+		ObjectMeta: metaV1.ObjectMeta{
+			Name:      "test",
+			Namespace: "default",
+			Labels: map[string]string{
+				"nginx.tsuru.io/app":                      "nginx",
+				"rpaas.extensions.tsuru.io/instance-name": "test",
+				"rpaas.extensions.tsuru.io/service-name":  "rpaasv2",
+			},
+		},
+		Status: coreV1.ServiceStatus{
+			LoadBalancer: coreV1.LoadBalancerStatus{
+				Ingress: []coreV1.LoadBalancerIngress{
+					{
+						IP: "1.1.1.1",
+					},
+				},
+			},
+		},
+	}
+
+	scheme := extensionsruntime.NewScheme()
+	client := fake.NewClientBuilder().WithScheme(scheme).WithRuntimeObjects(nginx1, svc1).Build()
+	api := controllerapi.New(client)
+
+	w := httptest.NewRecorder()
+	r, _ := http.NewRequest(http.MethodGet, "/v1/prometheus/discover", nil)
+
+	api.ServeHTTP(w, r)
+
+	assert.Equal(t, http.StatusOK, w.Code)
+	l := []controllerapi.TargetGroup{}
+	err := json.Unmarshal(w.Body.Bytes(), &l)
+	require.NoError(t, err)
+
+	assert.Equal(t, []controllerapi.TargetGroup{
+		{
+			Targets: []string{"http://1.1.1.1/_nginx_healthcheck"},
+			Labels: map[string]string{
+				"service":          "rpaasv2",
+				"service_instance": "test",
+			},
+		},
+		{
+			Targets: []string{"https://1.1.1.1/_nginx_healthcheck"},
+			Labels: map[string]string{
+				"servername":       "test.internal",
+				"service":          "rpaasv2",
+				"service_instance": "test",
+			},
+		},
+		{
+			Targets: []string{"https://1.1.1.1/_nginx_healthcheck"},
+			Labels: map[string]string{
+				"servername":       "hello.globo",
+				"service":          "rpaasv2",
+				"service_instance": "test",
+			},
+		},
+	}, l)
+}