100 lines
3.0 KiB
Go
100 lines
3.0 KiB
Go
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/*
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*
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* Copyright 2017 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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package grpc
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import (
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"fmt"
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"strings"
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"testing"
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"time"
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"google.golang.org/grpc/resolver"
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"google.golang.org/grpc/resolver/manual"
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"google.golang.org/grpc/test/leakcheck"
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)
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func TestResolverServiceConfigBeforeAddressNotPanic(t *testing.T) {
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defer leakcheck.Check(t)
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r, rcleanup := manual.GenerateAndRegisterManualResolver()
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defer rcleanup()
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cc, err := Dial(r.Scheme()+":///test.server", WithInsecure())
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if err != nil {
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t.Fatalf("failed to dial: %v", err)
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}
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defer cc.Close()
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// SwitchBalancer before NewAddress. There was no balancer created, this
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// makes sure we don't call close on nil balancerWrapper.
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r.NewServiceConfig(`{"loadBalancingPolicy": "round_robin"}`) // This should not panic.
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time.Sleep(time.Second) // Sleep to make sure the service config is handled by ClientConn.
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}
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func TestResolverEmptyUpdateNotPanic(t *testing.T) {
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defer leakcheck.Check(t)
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r, rcleanup := manual.GenerateAndRegisterManualResolver()
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defer rcleanup()
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cc, err := Dial(r.Scheme()+":///test.server", WithInsecure())
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if err != nil {
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t.Fatalf("failed to dial: %v", err)
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}
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defer cc.Close()
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// This make sure we don't create addrConn with empty address list.
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r.NewAddress([]resolver.Address{}) // This should not panic.
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time.Sleep(time.Second) // Sleep to make sure the service config is handled by ClientConn.
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}
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var (
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errTestResolverFailBuild = fmt.Errorf("test resolver build error")
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)
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type testResolverFailBuilder struct {
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buildOpt resolver.BuildOption
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}
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func (r *testResolverFailBuilder) Build(target resolver.Target, cc resolver.ClientConn, opts resolver.BuildOption) (resolver.Resolver, error) {
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r.buildOpt = opts
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return nil, errTestResolverFailBuild
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}
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func (r *testResolverFailBuilder) Scheme() string {
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return "testResolverFailBuilderScheme"
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}
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// Tests that options in WithResolverUserOptions are passed to resolver.Build().
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func TestResolverUserOptions(t *testing.T) {
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r := &testResolverFailBuilder{}
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userOpt := "testUserOpt"
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_, err := Dial("scheme:///test.server", WithInsecure(),
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withResolverBuilder(r),
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WithResolverUserOptions(userOpt),
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)
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if err == nil || !strings.Contains(err.Error(), errTestResolverFailBuild.Error()) {
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t.Fatalf("Dial with testResolverFailBuilder returns err: %v, want: %v", err, errTestResolverFailBuild)
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}
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if r.buildOpt.UserOptions != userOpt {
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t.Fatalf("buildOpt.UserOptions = %T %+v, want %v", r.buildOpt.UserOptions, r.buildOpt.UserOptions, userOpt)
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}
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}
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