Bumping k8s dependencies to 1.13

vendor/google.golang.org/grpc/test/balancer_test.go

@@ -0,0 +1,190 @@
+/*
+ *
+ * Copyright 2018 gRPC 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.
+ *
+ */
+
+package test
+
+import (
+	"reflect"
+	"testing"
+	"time"
+
+	"golang.org/x/net/context"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/balancer"
+	"google.golang.org/grpc/connectivity"
+	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/grpclog"
+	"google.golang.org/grpc/internal/leakcheck"
+	"google.golang.org/grpc/metadata"
+	"google.golang.org/grpc/resolver"
+	testpb "google.golang.org/grpc/test/grpc_testing"
+	"google.golang.org/grpc/testdata"
+)
+
+const testBalancerName = "testbalancer"
+
+// testBalancer creates one subconn with the first address from resolved
+// addresses.
+//
+// It's used to test options for NewSubConn are applies correctly.
+type testBalancer struct {
+	cc balancer.ClientConn
+	sc balancer.SubConn
+
+	newSubConnOptions balancer.NewSubConnOptions
+	pickOptions       []balancer.PickOptions
+	doneInfo          []balancer.DoneInfo
+}
+
+func (b *testBalancer) Build(cc balancer.ClientConn, opt balancer.BuildOptions) balancer.Balancer {
+	b.cc = cc
+	return b
+}
+
+func (*testBalancer) Name() string {
+	return testBalancerName
+}
+
+func (b *testBalancer) HandleResolvedAddrs(addrs []resolver.Address, err error) {
+	// Only create a subconn at the first time.
+	if err == nil && b.sc == nil {
+		b.sc, err = b.cc.NewSubConn(addrs, b.newSubConnOptions)
+		if err != nil {
+			grpclog.Errorf("testBalancer: failed to NewSubConn: %v", err)
+			return
+		}
+		b.cc.UpdateBalancerState(connectivity.Idle, &picker{sc: b.sc, bal: b})
+		b.sc.Connect()
+	}
+}
+
+func (b *testBalancer) HandleSubConnStateChange(sc balancer.SubConn, s connectivity.State) {
+	grpclog.Infof("testBalancer: HandleSubConnStateChange: %p, %v", sc, s)
+	if b.sc != sc {
+		grpclog.Infof("testBalancer: ignored state change because sc is not recognized")
+		return
+	}
+	if s == connectivity.Shutdown {
+		b.sc = nil
+		return
+	}
+
+	switch s {
+	case connectivity.Ready, connectivity.Idle:
+		b.cc.UpdateBalancerState(s, &picker{sc: sc, bal: b})
+	case connectivity.Connecting:
+		b.cc.UpdateBalancerState(s, &picker{err: balancer.ErrNoSubConnAvailable, bal: b})
+	case connectivity.TransientFailure:
+		b.cc.UpdateBalancerState(s, &picker{err: balancer.ErrTransientFailure, bal: b})
+	}
+}
+
+func (b *testBalancer) Close() {
+}
+
+type picker struct {
+	err error
+	sc  balancer.SubConn
+	bal *testBalancer
+}
+
+func (p *picker) Pick(ctx context.Context, opts balancer.PickOptions) (balancer.SubConn, func(balancer.DoneInfo), error) {
+	p.bal.pickOptions = append(p.bal.pickOptions, opts)
+	if p.err != nil {
+		return nil, nil, p.err
+	}
+	return p.sc, func(d balancer.DoneInfo) { p.bal.doneInfo = append(p.bal.doneInfo, d) }, nil
+}
+
+func TestCredsBundleFromBalancer(t *testing.T) {
+	balancer.Register(&testBalancer{
+		newSubConnOptions: balancer.NewSubConnOptions{
+			CredsBundle: &testCredsBundle{},
+		},
+	})
+	defer leakcheck.Check(t)
+	te := newTest(t, env{name: "creds-bundle", network: "tcp", balancer: ""})
+	te.tapHandle = authHandle
+	te.customDialOptions = []grpc.DialOption{
+		grpc.WithBalancerName(testBalancerName),
+	}
+	creds, err := credentials.NewServerTLSFromFile(testdata.Path("server1.pem"), testdata.Path("server1.key"))
+	if err != nil {
+		t.Fatalf("Failed to generate credentials %v", err)
+	}
+	te.customServerOptions = []grpc.ServerOption{
+		grpc.Creds(creds),
+	}
+	te.startServer(&testServer{})
+	defer te.tearDown()
+
+	cc := te.clientConn()
+	tc := testpb.NewTestServiceClient(cc)
+	if _, err := tc.EmptyCall(context.Background(), &testpb.Empty{}); err != nil {
+		t.Fatalf("Test failed. Reason: %v", err)
+	}
+}
+
+func TestPickAndDone(t *testing.T) {
+	defer leakcheck.Check(t)
+	for _, e := range listTestEnv() {
+		testPickAndDone(t, e)
+	}
+}
+
+func testPickAndDone(t *testing.T, e env) {
+	te := newTest(t, e)
+	b := &testBalancer{}
+	balancer.Register(b)
+	te.customDialOptions = []grpc.DialOption{
+		grpc.WithBalancerName(testBalancerName),
+	}
+	te.userAgent = failAppUA
+	te.startServer(&testServer{security: e.security})
+	defer te.tearDown()
+
+	cc := te.clientConn()
+	tc := testpb.NewTestServiceClient(cc)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	wantErr := detailedError
+	if _, err := tc.EmptyCall(ctx, &testpb.Empty{}); !reflect.DeepEqual(err, wantErr) {
+		t.Fatalf("TestService/EmptyCall(_, _) = _, %v, want _, %v", err, wantErr)
+	}
+	md := metadata.Pairs("testMDKey", "testMDVal")
+	ctx = metadata.NewOutgoingContext(ctx, md)
+	if _, err := tc.UnaryCall(ctx, &testpb.SimpleRequest{}); err != nil {
+		t.Fatalf("TestService.UnaryCall(%v, _, _, _) = _, %v; want _, <nil>", ctx, err)
+	}
+
+	poWant := []balancer.PickOptions{
+		{FullMethodName: "/grpc.testing.TestService/EmptyCall"},
+		{FullMethodName: "/grpc.testing.TestService/UnaryCall", Header: md},
+	}
+	if !reflect.DeepEqual(b.pickOptions, poWant) {
+		t.Fatalf("b.pickOptions = %v; want %v", b.pickOptions, poWant)
+	}
+
+	if len(b.doneInfo) < 1 || !reflect.DeepEqual(b.doneInfo[0].Err, wantErr) {
+		t.Fatalf("b.doneInfo = %v; want b.doneInfo[0].Err = %v", b.doneInfo, wantErr)
+	}
+	if len(b.doneInfo) < 2 || !reflect.DeepEqual(b.doneInfo[1].Trailer, testTrailerMetadata) {
+		t.Fatalf("b.doneInfo = %v; want b.doneInfo[1].Trailer = %v", b.doneInfo, testTrailerMetadata)
+	}
+}