Merge pull request #196 from davecheney/backport-e2e

internal/e2e: backport e2e tests from master

internal/e2e/grpc.go

@@ -0,0 +1,71 @@
+// Copyright © 2018 Heptio
+// 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.
+
+package e2e
+
+// grpc helpers
+
+import (
+	"net"
+	"sync"
+	"testing"
+
+	"github.com/heptio/contour/internal/contour"
+	cgrpc "github.com/heptio/contour/internal/grpc"
+	"github.com/heptio/contour/internal/log/stdlog"
+	"google.golang.org/grpc"
+	"k8s.io/client-go/tools/cache"
+)
+
+type testLogger struct {
+	*testing.T
+}
+
+func (t *testLogger) Write(buf []byte) (int, error) {
+	t.Logf("%s", buf)
+	return len(buf), nil
+}
+
+func setup(t *testing.T) (cache.ResourceEventHandler, *grpc.ClientConn, func()) {
+	w := &testLogger{t}
+
+	log := stdlog.New(w, w, 0)
+
+	tr := &contour.Translator{
+		Logger: log,
+	}
+
+	l, err := net.Listen("tcp", "127.0.0.1:0")
+	check(t, err)
+	var wg sync.WaitGroup
+	wg.Add(1)
+	srv := cgrpc.NewAPI(log, tr)
+	go func() {
+		defer wg.Done()
+		srv.Serve(l)
+	}()
+	cc, err := grpc.Dial(l.Addr().String(), grpc.WithInsecure())
+	check(t, err)
+	return tr, cc, func() {
+		l.Close()
+		srv.Stop()
+		wg.Wait()
+	}
+}
+
+func check(t *testing.T, err error) {
+	t.Helper()
+	if err != nil {
+		t.Fatal(err)
+	}
+}