mirror of https://github.com/knative/pkg.git
66 lines
1.7 KiB
Go
66 lines
1.7 KiB
Go
/*
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Copyright 2018 The Knative Authors
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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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https://www.apache.org/licenses/LICENSE-2.0
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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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package kmp
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import (
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"fmt"
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"github.com/google/go-cmp/cmp"
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"k8s.io/apimachinery/pkg/api/resource"
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)
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// Commonly used Comparers and other Options go here.
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var defaultOpts []cmp.Option
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func init() {
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defaultOpts = []cmp.Option{
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cmp.Comparer(func(x, y resource.Quantity) bool {
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return x.Cmp(y) == 0
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}),
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}
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}
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// SafeDiff wraps cmp.Diff but recovers from panics and uses custom Comparers for:
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// * k8s.io/apimachinery/pkg/api/resource.Quantity
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func SafeDiff(x, y interface{}, opts ...cmp.Option) (diff string, err error) {
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// cmp.Diff will panic if we miss something; return error instead of crashing.
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defer func() {
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if r := recover(); r != nil {
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err = fmt.Errorf("recovered in kmp.SafeDiff: %v", r)
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}
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}()
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opts = append(opts, defaultOpts...)
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diff = cmp.Diff(x, y, opts...)
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return
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}
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func SafeEqual(x, y interface{}, opts ...cmp.Option) (equal bool, err error) {
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// cmp.Equal will panic if we miss something; return error instead of crashing.
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defer func() {
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if r := recover(); r != nil {
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err = fmt.Errorf("recovered in kmp.SafeEqual: %v", r)
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}
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}()
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opts = append(opts, defaultOpts...)
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equal = cmp.Equal(x, y, opts...)
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return
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}
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