mirror of
https://github.com/octoleo/restic.git
synced 2024-11-30 08:44:02 +00:00
100 lines
3.0 KiB
Go
100 lines
3.0 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 (
|
|
"fmt"
|
|
"math"
|
|
"reflect"
|
|
"unicode"
|
|
"unicode/utf8"
|
|
|
|
"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...)
|
|
}
|
|
|
|
// TODO(jba): remove the code below when cmpopts becomes available.
|
|
|
|
// IgnoreUnexported returns an Option that only ignores the immediate unexported
|
|
// fields of a struct, including anonymous fields of unexported types.
|
|
// In particular, unexported fields within the struct's exported fields
|
|
// of struct types, including anonymous fields, will not be ignored unless the
|
|
// type of the field itself is also passed to IgnoreUnexported.
|
|
func IgnoreUnexported(typs ...interface{}) cmp.Option {
|
|
ux := newUnexportedFilter(typs...)
|
|
return cmp.FilterPath(ux.filter, cmp.Ignore())
|
|
}
|
|
|
|
type unexportedFilter struct{ m map[reflect.Type]bool }
|
|
|
|
func newUnexportedFilter(typs ...interface{}) unexportedFilter {
|
|
ux := unexportedFilter{m: make(map[reflect.Type]bool)}
|
|
for _, typ := range typs {
|
|
t := reflect.TypeOf(typ)
|
|
if t == nil || t.Kind() != reflect.Struct {
|
|
panic(fmt.Sprintf("invalid struct type: %T", typ))
|
|
}
|
|
ux.m[t] = true
|
|
}
|
|
return ux
|
|
}
|
|
func (xf unexportedFilter) filter(p cmp.Path) bool {
|
|
if len(p) < 2 {
|
|
return false
|
|
}
|
|
sf, ok := p[len(p)-1].(cmp.StructField)
|
|
if !ok {
|
|
return false
|
|
}
|
|
return xf.m[p[len(p)-2].Type()] && !isExported(sf.Name())
|
|
}
|
|
|
|
// isExported reports whether the identifier is exported.
|
|
func isExported(id string) bool {
|
|
r, _ := utf8.DecodeRuneInString(id)
|
|
return unicode.IsUpper(r)
|
|
}
|