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/*
*
* Copyright 2020 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 weightedtarget
import (
"testing"
"github.com/google/go-cmp/cmp"
"google.golang.org/grpc/balancer"
_ "google.golang.org/grpc/balancer/grpclb"
"google.golang.org/grpc/balancer/roundrobin"
internalserviceconfig "google.golang.org/grpc/internal/serviceconfig"
)
const (
testJSONConfig = `{
"targets": {
"cluster_1": {
"weight": 75,
"childPolicy": [{
"grpclb": {
"childPolicy": [{"pick_first":{}}],
"targetName": "foo-service"
}
}]
},
"cluster_2": {
"weight": 25,
"childPolicy": [{"round_robin": ""}]
}
}
}`
)
var (
grpclbConfigParser = balancer.Get("grpclb").(balancer.ConfigParser)
grpclbConfigJSON = `{"childPolicy": [{"pick_first":{}}], "targetName": "foo-service"}`
grpclbConfig, _ = grpclbConfigParser.ParseConfig([]byte(grpclbConfigJSON))
)
func (s) TestParseConfig(t *testing.T) {
tests := []struct {
name string
js string
want *LBConfig
wantErr bool
}{
{
name: "empty json",
js: "",
want: nil,
wantErr: true,
},
{
name: "OK",
js: testJSONConfig,
want: &LBConfig{
Targets: map[string]Target{
"cluster_1": {
Weight: 75,
ChildPolicy: &internalserviceconfig.BalancerConfig{
Name: "grpclb",
Config: grpclbConfig,
},
},
"cluster_2": {
Weight: 25,
ChildPolicy: &internalserviceconfig.BalancerConfig{
Name: roundrobin.Name,
},
},
},
},
wantErr: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := parseConfig([]byte(tt.js))
if (err != nil) != tt.wantErr {
t.Fatalf("parseConfig() error = %v, wantErr %v", err, tt.wantErr)
}
if !cmp.Equal(got, tt.want) {
t.Errorf("parseConfig() got unexpected result, diff: %v", cmp.Diff(got, tt.want))
}
})
}
}
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