Add test for ingress host matching

Signed-off-by: knrt10 <kautilya@kinvolk.io>

test/ingress/packet_test/match_host_test.go

@@ -0,0 +1,105 @@
+// 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 aws_edge packet
+// +build e2e
+
+package packet_test
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"testing"
+	"time"
+
+	testutil "github.com/kinvolk/lokomotive/test/components/util"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/util/wait"
+	"k8s.io/client-go/kubernetes"
+)
+
+const (
+	retryInterval  = time.Second * 5
+	timeout        = time.Minute * 5
+	contextTimeout = 10
+)
+
+type componentTestCase struct {
+	componentName string
+	platforms     []testutil.Platform
+	namespace     string
+}
+
+func TestIngressHost(t *testing.T) {
+	client := testutil.CreateKubeClient(t)
+	componentTestCases := []componentTestCase{
+		{
+			componentName: "dex",
+			platforms:     []testutil.Platform{testutil.PlatformPacket},
+			namespace:     "dex",
+		},
+		{
+			componentName: "gangway",
+			platforms:     []testutil.Platform{testutil.PlatformPacket},
+			namespace:     "gangway",
+		},
+	}
+
+	for _, tc := range componentTestCases {
+		tc := tc
+		t.Run(tc.componentName, func(t *testing.T) {
+			t.Parallel()
+
+			if !testutil.IsPlatformSupported(t, tc.platforms) {
+				t.Skip()
+			}
+
+			if err := wait.PollImmediate(
+				retryInterval, timeout, checkIngressHost(client, tc),
+			); err != nil {
+				t.Fatalf("%v", err)
+			}
+		})
+	}
+}
+
+func checkIngressHost(client kubernetes.Interface, tc componentTestCase) wait.ConditionFunc {
+	return func() (done bool, err error) {
+		ctx, cancel := context.WithTimeout(context.Background(), contextTimeout*time.Second)
+		defer cancel()
+
+		ing, err := client.ExtensionsV1beta1().Ingresses(tc.namespace).Get(ctx, tc.componentName, metav1.GetOptions{})
+		if err != nil {
+			return false, fmt.Errorf("error getting ingress: %v", err)
+		}
+
+		ingIP := ing.Status.LoadBalancer.Ingress[0].IP
+		ingHost := ing.Spec.Rules[0].Host
+
+		addr, err := net.LookupIP(ingHost)
+
+		if err != nil {
+			return false, fmt.Errorf("Unknown host: %v", err)
+		}
+
+		for _, v := range addr {
+			if v.String() == ingIP {
+				return true, nil
+			}
+		}
+
+		return true, nil
+	}
+}