54 lines
1.7 KiB
Go
54 lines
1.7 KiB
Go
|
// Copyright 2017 Google Inc. All Rights Reserved.
|
||
|
|
//
|
||
|
|
// 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 testutil
|
||
|
|
|
||
|
|
import (
|
||
|
|
"math"
|
||
|
|
|
||
|
|
"github.com/golang/protobuf/proto"
|
||
|
|
"github.com/google/go-cmp/cmp"
|
||
|
|
)
|
||
|
|
|
||
|
|
var (
|
||
|
|
alwaysEqual = cmp.Comparer(func(_, _ interface{}) bool { return true })
|
||
|
|
|
||
|
|
defaultCmpOptions = []cmp.Option{
|
||
|
|
// Use proto.Equal for protobufs
|
||
|
|
cmp.Comparer(proto.Equal),
|
||
|
|
// NaNs compare equal
|
||
|
|
cmp.FilterValues(func(x, y float64) bool {
|
||
|
|
return math.IsNaN(x) && math.IsNaN(y)
|
||
|
|
}, alwaysEqual),
|
||
|
|
cmp.FilterValues(func(x, y float32) bool {
|
||
|
|
return math.IsNaN(float64(x)) && math.IsNaN(float64(y))
|
||
|
|
}, alwaysEqual),
|
||
|
|
}
|
||
|
|
)
|
||
|
|
|
||
|
|
// Equal tests two values for equality.
|
||
|
|
func Equal(x, y interface{}, opts ...cmp.Option) bool {
|
||
|
|
// Put default options at the end. Order doesn't matter.
|
||
|
|
opts = append(opts[:len(opts):len(opts)], defaultCmpOptions...)
|
||
|
|
return cmp.Equal(x, y, opts...)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Diff reports the differences between two values.
|
||
|
|
// Diff(x, y) == "" iff Equal(x, y).
|
||
|
|
func Diff(x, y interface{}, opts ...cmp.Option) string {
|
||
|
|
// Put default options at the end. Order doesn't matter.
|
||
|
|
opts = append(opts[:len(opts):len(opts)], defaultCmpOptions...)
|
||
|
|
return cmp.Diff(x, y, opts...)
|
||
|
|
}
|