weightedroundrobin_test.go

Documentation: google.golang.org/grpc/balancer/weightedroundrobin

     1  /*
     2   *
     3   * Copyright 2020 gRPC authors.
     4   *
     5   * Licensed under the Apache License, Version 2.0 (the "License");
     6   * you may not use this file except in compliance with the License.
     7   * 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  package weightedroundrobin
    20  
    21  import (
    22  	"testing"
    23  
    24  	"github.com/google/go-cmp/cmp"
    25  	"google.golang.org/grpc/attributes"
    26  	"google.golang.org/grpc/resolver"
    27  )
    28  
    29  func TestAddrInfoToAndFromAttributes(t *testing.T) {
    30  	tests := []struct {
    31  		desc            string
    32  		inputAddrInfo   AddrInfo
    33  		inputAttributes *attributes.Attributes
    34  		wantAddrInfo    AddrInfo
    35  	}{
    36  		{
    37  			desc:            "empty attributes",
    38  			inputAddrInfo:   AddrInfo{Weight: 100},
    39  			inputAttributes: nil,
    40  			wantAddrInfo:    AddrInfo{Weight: 100},
    41  		},
    42  		{
    43  			desc:            "non-empty attributes",
    44  			inputAddrInfo:   AddrInfo{Weight: 100},
    45  			inputAttributes: attributes.New("foo", "bar"),
    46  			wantAddrInfo:    AddrInfo{Weight: 100},
    47  		},
    48  		{
    49  			desc:            "addrInfo not present in empty attributes",
    50  			inputAddrInfo:   AddrInfo{},
    51  			inputAttributes: nil,
    52  			wantAddrInfo:    AddrInfo{},
    53  		},
    54  		{
    55  			desc:            "addrInfo not present in non-empty attributes",
    56  			inputAddrInfo:   AddrInfo{},
    57  			inputAttributes: attributes.New("foo", "bar"),
    58  			wantAddrInfo:    AddrInfo{},
    59  		},
    60  	}
    61  
    62  	for _, test := range tests {
    63  		t.Run(test.desc, func(t *testing.T) {
    64  			addr := resolver.Address{Attributes: test.inputAttributes}
    65  			addr = SetAddrInfo(addr, test.inputAddrInfo)
    66  			gotAddrInfo := GetAddrInfo(addr)
    67  			if !cmp.Equal(gotAddrInfo, test.wantAddrInfo) {
    68  				t.Errorf("gotAddrInfo: %v, wantAddrInfo: %v", gotAddrInfo, test.wantAddrInfo)
    69  			}
    70  
    71  		})
    72  	}
    73  }
    74  
    75  func TestGetAddInfoEmpty(t *testing.T) {
    76  	addr := resolver.Address{}
    77  	gotAddrInfo := GetAddrInfo(addr)
    78  	wantAddrInfo := AddrInfo{}
    79  	if !cmp.Equal(gotAddrInfo, wantAddrInfo) {
    80  		t.Errorf("gotAddrInfo: %v, wantAddrInfo: %v", gotAddrInfo, wantAddrInfo)
    81  	}
    82  }
    83
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