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/*
*
* 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 attributes_test
import (
"fmt"
"testing"
"google.golang.org/grpc/attributes"
)
type stringVal struct {
s string
}
func (s stringVal) Equal(o interface{}) bool {
os, ok := o.(stringVal)
return ok && s.s == os.s
}
func ExampleAttributes() {
type keyOne struct{}
type keyTwo struct{}
a := attributes.New(keyOne{}, 1).WithValue(keyTwo{}, stringVal{s: "two"})
fmt.Println("Key one:", a.Value(keyOne{}))
fmt.Println("Key two:", a.Value(keyTwo{}))
// Output:
// Key one: 1
// Key two: {two}
}
func ExampleAttributes_WithValue() {
type keyOne struct{}
type keyTwo struct{}
a := attributes.New(keyOne{}, 1)
a = a.WithValue(keyTwo{}, stringVal{s: "two"})
fmt.Println("Key one:", a.Value(keyOne{}))
fmt.Println("Key two:", a.Value(keyTwo{}))
// Output:
// Key one: 1
// Key two: {two}
}
// Test that two attributes with the same content are Equal.
func TestEqual(t *testing.T) {
type keyOne struct{}
type keyTwo struct{}
a1 := attributes.New(keyOne{}, 1).WithValue(keyTwo{}, stringVal{s: "two"})
a2 := attributes.New(keyOne{}, 1).WithValue(keyTwo{}, stringVal{s: "two"})
if !a1.Equal(a2) {
t.Fatalf("%+v.Equals(%+v) = false; want true", a1, a2)
}
if !a2.Equal(a1) {
t.Fatalf("%+v.Equals(%+v) = false; want true", a2, a1)
}
}
// Test that two attributes with different content are not Equal.
func TestNotEqual(t *testing.T) {
type keyOne struct{}
type keyTwo struct{}
a1 := attributes.New(keyOne{}, 1).WithValue(keyTwo{}, stringVal{s: "two"})
a2 := attributes.New(keyOne{}, 2).WithValue(keyTwo{}, stringVal{s: "two"})
a3 := attributes.New(keyOne{}, 1).WithValue(keyTwo{}, stringVal{s: "one"})
if a1.Equal(a2) {
t.Fatalf("%+v.Equals(%+v) = true; want false", a1, a2)
}
if a2.Equal(a1) {
t.Fatalf("%+v.Equals(%+v) = true; want false", a2, a1)
}
if a3.Equal(a1) {
t.Fatalf("%+v.Equals(%+v) = true; want false", a3, a1)
}
}
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