mirror of https://github.com/grpc/grpc-go.git
91 lines
2.4 KiB
Go
91 lines
2.4 KiB
Go
/*
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*
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* Copyright 2019 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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package attributes_test
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import (
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"fmt"
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"testing"
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"google.golang.org/grpc/attributes"
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)
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type stringVal struct {
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s string
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}
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func (s stringVal) Equal(o interface{}) bool {
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os, ok := o.(stringVal)
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return ok && s.s == os.s
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}
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func ExampleAttributes() {
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type keyOne struct{}
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type keyTwo struct{}
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a := attributes.New(keyOne{}, 1).WithValue(keyTwo{}, stringVal{s: "two"})
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fmt.Println("Key one:", a.Value(keyOne{}))
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fmt.Println("Key two:", a.Value(keyTwo{}))
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// Output:
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// Key one: 1
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// Key two: {two}
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}
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func ExampleAttributes_WithValue() {
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type keyOne struct{}
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type keyTwo struct{}
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a := attributes.New(keyOne{}, 1)
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a = a.WithValue(keyTwo{}, stringVal{s: "two"})
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fmt.Println("Key one:", a.Value(keyOne{}))
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fmt.Println("Key two:", a.Value(keyTwo{}))
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// Output:
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// Key one: 1
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// Key two: {two}
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}
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// Test that two attributes with the same content are Equal.
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func TestEqual(t *testing.T) {
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type keyOne struct{}
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type keyTwo struct{}
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a1 := attributes.New(keyOne{}, 1).WithValue(keyTwo{}, stringVal{s: "two"})
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a2 := attributes.New(keyOne{}, 1).WithValue(keyTwo{}, stringVal{s: "two"})
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if !a1.Equal(a2) {
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t.Fatalf("%+v.Equals(%+v) = false; want true", a1, a2)
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}
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if !a2.Equal(a1) {
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t.Fatalf("%+v.Equals(%+v) = false; want true", a2, a1)
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}
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}
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// Test that two attributes with different content are not Equal.
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func TestNotEqual(t *testing.T) {
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type keyOne struct{}
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type keyTwo struct{}
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a1 := attributes.New(keyOne{}, 1).WithValue(keyTwo{}, stringVal{s: "two"})
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a2 := attributes.New(keyOne{}, 2).WithValue(keyTwo{}, stringVal{s: "two"})
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a3 := attributes.New(keyOne{}, 1).WithValue(keyTwo{}, stringVal{s: "one"})
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if a1.Equal(a2) {
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t.Fatalf("%+v.Equals(%+v) = true; want false", a1, a2)
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}
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if a2.Equal(a1) {
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t.Fatalf("%+v.Equals(%+v) = true; want false", a2, a1)
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}
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if a3.Equal(a1) {
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t.Fatalf("%+v.Equals(%+v) = true; want false", a3, a1)
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}
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}
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