| /* |
| * |
| * 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 grpclb |
| |
| import ( |
| "encoding/json" |
| "testing" |
| |
| "github.com/google/go-cmp/cmp" |
| "google.golang.org/grpc/serviceconfig" |
| ) |
| |
| func (s) TestParse(t *testing.T) { |
| tests := []struct { |
| name string |
| sc string |
| want serviceconfig.LoadBalancingConfig |
| wantErr bool |
| }{ |
| { |
| name: "empty", |
| sc: "", |
| want: nil, |
| wantErr: true, |
| }, |
| { |
| name: "success1", |
| sc: ` |
| { |
| "childPolicy": [ |
| {"pick_first":{}} |
| ], |
| "serviceName": "foo-service" |
| }`, |
| want: &grpclbServiceConfig{ |
| ChildPolicy: &[]map[string]json.RawMessage{ |
| {"pick_first": json.RawMessage("{}")}, |
| }, |
| ServiceName: "foo-service", |
| }, |
| }, |
| { |
| name: "success2", |
| sc: ` |
| { |
| "childPolicy": [ |
| {"round_robin":{}}, |
| {"pick_first":{}} |
| ], |
| "serviceName": "foo-service" |
| }`, |
| want: &grpclbServiceConfig{ |
| ChildPolicy: &[]map[string]json.RawMessage{ |
| {"round_robin": json.RawMessage("{}")}, |
| {"pick_first": json.RawMessage("{}")}, |
| }, |
| ServiceName: "foo-service", |
| }, |
| }, |
| } |
| for _, tt := range tests { |
| t.Run(tt.name, func(t *testing.T) { |
| got, err := (&lbBuilder{}).ParseConfig(json.RawMessage(tt.sc)) |
| if (err != nil) != (tt.wantErr) { |
| t.Fatalf("ParseConfig(%q) returned error: %v, wantErr: %v", tt.sc, err, tt.wantErr) |
| } |
| if diff := cmp.Diff(tt.want, got); diff != "" { |
| t.Fatalf("ParseConfig(%q) returned unexpected difference (-want +got):\n%s", tt.sc, diff) |
| } |
| }) |
| } |
| } |
| |
| func (s) TestChildIsPickFirst(t *testing.T) { |
| tests := []struct { |
| name string |
| s string |
| want bool |
| }{ |
| { |
| name: "pickfirst_only", |
| s: `{"childPolicy":[{"pick_first":{}}]}`, |
| want: true, |
| }, |
| { |
| name: "pickfirst_before_rr", |
| s: `{"childPolicy":[{"pick_first":{}},{"round_robin":{}}]}`, |
| want: true, |
| }, |
| { |
| name: "rr_before_pickfirst", |
| s: `{"childPolicy":[{"round_robin":{}},{"pick_first":{}}]}`, |
| want: false, |
| }, |
| } |
| for _, tt := range tests { |
| t.Run(tt.name, func(t *testing.T) { |
| gc, err := (&lbBuilder{}).ParseConfig(json.RawMessage(tt.s)) |
| if err != nil { |
| t.Fatalf("Parse(%v) = _, %v; want _, nil", tt.s, err) |
| } |
| if got := childIsPickFirst(gc.(*grpclbServiceConfig)); got != tt.want { |
| t.Errorf("childIsPickFirst() = %v, want %v", got, tt.want) |
| } |
| }) |
| } |
| } |