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config_test.go
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config_test.go
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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 priority
import (
"testing"
"github.com/google/go-cmp/cmp"
"google.golang.org/grpc/balancer/roundrobin"
internalserviceconfig "google.golang.org/grpc/internal/serviceconfig"
)
func TestParseConfig(t *testing.T) {
tests := []struct {
name string
js string
want *lbConfig
wantErr bool
}{
{
name: "child not found",
js: `{
"priorities": ["child-1", "child-2", "child-3"],
"children": {
"child-1": {"config": [{"round_robin":{}}]},
"child-3": {"config": [{"round_robin":{}}]}
}
}
`,
wantErr: true,
},
{
name: "child not used",
js: `{
"priorities": ["child-1", "child-2"],
"children": {
"child-1": {"config": [{"round_robin":{}}]},
"child-2": {"config": [{"round_robin":{}}]},
"child-3": {"config": [{"round_robin":{}}]}
}
}
`,
wantErr: true,
},
{
name: "good",
js: `{
"priorities": ["child-1", "child-2", "child-3"],
"children": {
"child-1": {"config": [{"round_robin":{}}]},
"child-2": {"config": [{"round_robin":{}}]},
"child-3": {"config": [{"round_robin":{}}]}
}
}
`,
want: &lbConfig{
Children: map[string]*child{
"child-1": {
&internalserviceconfig.BalancerConfig{
Name: roundrobin.Name,
},
},
"child-2": {
&internalserviceconfig.BalancerConfig{
Name: roundrobin.Name,
},
},
"child-3": {
&internalserviceconfig.BalancerConfig{
Name: roundrobin.Name,
},
},
},
Priorities: []string{"child-1", "child-2", "child-3"},
},
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.Errorf("parseConfig() error = %v, wantErr %v", err, tt.wantErr)
return
}
if diff := cmp.Diff(got, tt.want); diff != "" {
t.Errorf("parseConfig() got = %v, want %v, diff: %s", got, tt.want, diff)
}
})
}
}