-
Notifications
You must be signed in to change notification settings - Fork 450
/
deep.go
81 lines (67 loc) · 2.48 KB
/
deep.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
// Copyright (c) 2020 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 matchers
import (
"fmt"
"github.com/onsi/gomega/format"
gomegatypes "github.com/onsi/gomega/types"
"k8s.io/apimachinery/pkg/api/equality"
"sigs.k8s.io/yaml"
)
const (
deepMatcherNilError = `refusing to compare <nil> to <nil>.
Be explicit and use BeNil() instead.
This is to avoid mistakes where both sides of an assertion are erroneously uninitialized`
)
type deepMatcher struct {
name string
expected interface{}
compareFn func(a1, a2 interface{}) bool
}
func newDeepDerivativeMatcher(expected interface{}) gomegatypes.GomegaMatcher {
return &deepMatcher{
name: "deep derivative equal",
expected: expected,
compareFn: equality.Semantic.DeepDerivative,
}
}
func newDeepEqualMatcher(expected interface{}) gomegatypes.GomegaMatcher {
return &deepMatcher{
name: "deep equal",
expected: expected,
compareFn: equality.Semantic.DeepEqual,
}
}
func (m *deepMatcher) Match(actual interface{}) (success bool, err error) {
if actual == nil && m.expected == nil {
return false, fmt.Errorf(deepMatcherNilError)
}
return m.compareFn(m.expected, actual), nil
}
func (m *deepMatcher) FailureMessage(actual interface{}) (message string) {
return m.failureMessage(actual, "to")
}
func (m *deepMatcher) NegatedFailureMessage(actual interface{}) (message string) {
return m.failureMessage(actual, "not to")
}
func (m *deepMatcher) failureMessage(actual interface{}, messagePrefix string) (message string) {
var (
actualYAML, actualErr = yaml.Marshal(actual)
expectedYAML, expectedErr = yaml.Marshal(m.expected)
)
if actualErr == nil && expectedErr == nil {
return format.MessageWithDiff(string(actualYAML), messagePrefix+" "+m.name, string(expectedYAML))
}
return format.Message(actual, messagePrefix+" "+m.name, m.expected)
}