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xds_lrs_test.go
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xds_lrs_test.go
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// +build go1.12
/*
*
* Copyright 2019 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 edsbalancer
import (
"context"
"testing"
"google.golang.org/grpc/balancer"
"google.golang.org/grpc/resolver"
xdsclient "google.golang.org/grpc/xds/internal/client"
"google.golang.org/grpc/xds/internal/testutils/fakeclient"
)
// TestXDSLoadReporting verifies that the edsBalancer starts the loadReport
// stream when the lbConfig passed to it contains a valid value for the LRS
// server (empty string).
func (s) TestXDSLoadReporting(t *testing.T) {
xdsC := fakeclient.NewClient()
defer xdsC.Close()
builder := balancer.Get(edsName)
edsB := builder.Build(newNoopTestClientConn(), balancer.BuildOptions{})
if edsB == nil {
t.Fatalf("builder.Build(%s) failed and returned nil", edsName)
}
defer edsB.Close()
if err := edsB.UpdateClientConnState(balancer.ClientConnState{
ResolverState: xdsclient.SetClient(resolver.State{}, xdsC),
BalancerConfig: &EDSConfig{
EDSServiceName: testEDSClusterName,
LrsLoadReportingServerName: new(string),
},
}); err != nil {
t.Fatal(err)
}
ctx, cancel := context.WithTimeout(context.Background(), defaultTestTimeout)
defer cancel()
gotCluster, err := xdsC.WaitForWatchEDS(ctx)
if err != nil {
t.Fatalf("xdsClient.WatchEndpoints failed with error: %v", err)
}
if gotCluster != testEDSClusterName {
t.Fatalf("xdsClient.WatchEndpoints() called with cluster: %v, want %v", gotCluster, testEDSClusterName)
}
got, err := xdsC.WaitForReportLoad(ctx)
if err != nil {
t.Fatalf("xdsClient.ReportLoad failed with error: %v", err)
}
if got.Server != "" {
t.Fatalf("xdsClient.ReportLoad called with {%v}: want {\"\"}", got.Server)
}
}