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cmp.go
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cmp.go
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/*
Copyright 2019 The Crossplane 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 test
import (
"reflect"
"github.com/google/go-cmp/cmp"
"github.com/google/go-cmp/cmp/cmpopts"
xpv1 "github.com/crossplane/crossplane-runtime/apis/common/v1"
)
// EquateErrors returns true if the supplied errors are of the same type and
// produce identical strings. This mirrors the error comparison behaviour of
// https://github.com/go-test/deep, which most Crossplane tests targeted before
// we switched to go-cmp.
//
// This differs from cmpopts.EquateErrors, which does not test for error strings
// and instead returns whether one error 'is' (in the errors.Is sense) the
// other.
func EquateErrors() cmp.Option {
return cmp.Comparer(func(a, b error) bool {
if a == nil || b == nil {
return a == nil && b == nil
}
av := reflect.ValueOf(a)
bv := reflect.ValueOf(b)
if av.Type() != bv.Type() {
return false
}
return a.Error() == b.Error()
})
}
// EquateConditions sorts any slices of Condition before comparing them.
func EquateConditions() cmp.Option {
return cmpopts.SortSlices(func(i, j xpv1.Condition) bool { return i.Type < j.Type })
}