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