istio-operator: Add e2e test

- Adds e2e test to verify if pods are up and running.
- Adds test to verify if the metrics are scraped.

Signed-off-by: Suraj Deshmukh <suraj@kinvolk.io>

test/components/istio/istio_test.go

@@ -0,0 +1,57 @@
+// Copyright 2020 The Lokomotive Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build aws aks aws_edge packet
+// +build e2e
+
+package istio_test
+
+import (
+	"testing"
+	"time"
+
+	testutil "github.com/kinvolk/lokomotive/test/components/util"
+)
+
+const (
+	retryInterval = 3 * time.Second
+	timeout       = 7 * time.Minute
+)
+
+func TestIstioDeployments(t *testing.T) {
+	deployments := []struct {
+		Namespace  string
+		Deployment string
+	}{
+		{
+			Namespace:  "istio-operator",
+			Deployment: "istio-operator",
+		},
+		{
+			Namespace:  "istio-system",
+			Deployment: "istiod",
+		},
+	}
+
+	client := testutil.CreateKubeClient(t)
+
+	for _, d := range deployments {
+		d := d
+		t.Run(d.Deployment, func(t *testing.T) {
+			t.Parallel()
+
+			testutil.WaitForDeployment(t, client, d.Namespace, d.Deployment, retryInterval, timeout)
+		})
+	}
+}

test/monitoring/components_metrics_test.go

@@ -90,6 +90,11 @@ func testComponentsPrometheusMetrics(t *testing.T, v1api v1.API) {
 			query:         "certmanager_controller_sync_call_count",
 			platforms:     []testutil.Platform{testutil.PlatformPacket, testutil.PlatformAWS, testutil.PlatformAKS},
 		},
+		{
+			componentName: "experimental-istio-operator",
+			query:         "pilot_k8s_reg_events",
+			platforms:     []testutil.Platform{testutil.PlatformPacket, testutil.PlatformAWS, testutil.PlatformAKS},
+		},
 	}
 
 	for _, tc := range testCases {