dubbo.apache.org/dubbo-go/v3@v3.1.1/xds/balancer/ringhash/config_test.go (about)

     1  /*
     2   * Licensed to the Apache Software Foundation (ASF) under one or more
     3   * contributor license agreements.  See the NOTICE file distributed with
     4   * this work for additional information regarding copyright ownership.
     5   * The ASF licenses this file to You under the Apache License, Version 2.0
     6   * (the "License"); you may not use this file except in compliance with
     7   * the License.  You may obtain a copy of the License at
     8   *
     9   *     http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17  
    18  /*
    19   *
    20   * Copyright 2021 gRPC authors.
    21   *
    22   */
    23  
    24  package ringhash
    25  
    26  import (
    27  	"testing"
    28  )
    29  
    30  import (
    31  	"github.com/google/go-cmp/cmp"
    32  )
    33  
    34  func TestParseConfig(t *testing.T) {
    35  	tests := []struct {
    36  		name    string
    37  		js      string
    38  		want    *LBConfig
    39  		wantErr bool
    40  	}{
    41  		{
    42  			name: "OK",
    43  			js:   `{"minRingSize": 1, "maxRingSize": 2}`,
    44  			want: &LBConfig{MinRingSize: 1, MaxRingSize: 2},
    45  		},
    46  		{
    47  			name: "OK with default min",
    48  			js:   `{"maxRingSize": 2000}`,
    49  			want: &LBConfig{MinRingSize: defaultMinSize, MaxRingSize: 2000},
    50  		},
    51  		{
    52  			name: "OK with default max",
    53  			js:   `{"minRingSize": 2000}`,
    54  			want: &LBConfig{MinRingSize: 2000, MaxRingSize: defaultMaxSize},
    55  		},
    56  		{
    57  			name:    "min greater than max",
    58  			js:      `{"minRingSize": 10, "maxRingSize": 2}`,
    59  			want:    nil,
    60  			wantErr: true,
    61  		},
    62  	}
    63  	for _, tt := range tests {
    64  		t.Run(tt.name, func(t *testing.T) {
    65  			got, err := parseConfig([]byte(tt.js))
    66  			if (err != nil) != tt.wantErr {
    67  				t.Errorf("parseConfig() error = %v, wantErr %v", err, tt.wantErr)
    68  				return
    69  			}
    70  			if diff := cmp.Diff(got, tt.want); diff != "" {
    71  				t.Errorf("parseConfig() got unexpected output, diff (-got +want): %v", diff)
    72  			}
    73  		})
    74  	}
    75  }