132 lines
3.8 KiB
Go
132 lines
3.8 KiB
Go
/*
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Copyright 2018 the Velero contributors.
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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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http://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 test
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"reflect"
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"testing"
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"time"
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"github.com/google/go-cmp/cmp"
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"github.com/google/go-cmp/cmp/cmpopts"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"k8s.io/apimachinery/pkg/api/equality"
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"k8s.io/apimachinery/pkg/util/diff"
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core "k8s.io/client-go/testing"
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)
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// CompareActions checks slices of actual and expected Actions
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// for equality (ignoring order). It checks that the lengths of
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// the slices are the same, that each actual Action has a
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// corresponding expected Action, and that each expected Action
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// has a corresponding actual Action.
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func CompareActions(t *testing.T, expected, actual []core.Action) {
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t.Helper()
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assert.Len(t, actual, len(expected))
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for _, e := range expected {
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found := false
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for _, a := range actual {
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if reflect.DeepEqual(e, a) {
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found = true
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break
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}
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}
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if !found {
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t.Errorf("missing expected action %#v", e)
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}
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}
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for _, a := range actual {
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found := false
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for _, e := range expected {
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if reflect.DeepEqual(e, a) {
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found = true
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break
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}
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}
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if !found {
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t.Errorf("unexpected action %#v", a)
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}
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}
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}
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// ValidatePatch tests the validity of an action. It checks
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// that the action is a PatchAction, that the patch decodes from JSON
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// with the provided decode func and has no extraneous fields, and that
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// the decoded patch matches the expected.
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func ValidatePatch(t *testing.T, action core.Action, expected interface{}, decodeFunc func(*json.Decoder) (interface{}, error)) {
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t.Helper()
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patchAction, ok := action.(core.PatchAction)
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require.True(t, ok, "action is not a PatchAction")
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decoder := json.NewDecoder(bytes.NewReader(patchAction.GetPatch()))
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decoder.DisallowUnknownFields()
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actual, err := decodeFunc(decoder)
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require.NoError(t, err)
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AssertDeepEqual(t, expected, actual)
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}
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// TimesAreEqual compares two times for equality.
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// This function is used by equality.Semantic.DeepEqual to compare two time objects
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// without having to call a method.
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func TimesAreEqual(t1, t2 time.Time) bool {
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return t1.Equal(t2)
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}
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// AssertDeepEqual asserts the semantic equality of objects.
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// This function exists in order to make sure time.Time and metav1.Time objects
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// can be compared correctly. See https://github.com/stretchr/testify/issues/502.
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func AssertDeepEqual(t *testing.T, expected, actual interface{}) bool {
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t.Helper()
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// By default, the equality.Semantic object doesn't have a function for comparing time.Times
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err := equality.Semantic.AddFunc(TimesAreEqual)
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if err != nil {
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// Programmer error, the test should die.
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t.Fatalf("Could not register equality function: %s", err)
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}
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if !equality.Semantic.DeepEqual(expected, actual) {
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s := diff.ObjectDiff(expected, actual)
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return assert.Fail(t, fmt.Sprintf("Objects not equal:\n\n%s", s))
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}
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return true
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}
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// AssertErrorMatches asserts that if expected is the empty string, actual
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// is nil, otherwise, that actual's error string matches expected.
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func AssertErrorMatches(t *testing.T, expected string, actual error) bool {
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t.Helper()
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if expected != "" {
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return assert.EqualError(t, actual, expected)
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}
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return assert.NoError(t, actual)
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}
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func CompareSlice(x, y []string) bool {
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less := func(a, b string) bool { return a < b }
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return cmp.Diff(x, y, cmpopts.SortSlices(less)) == ""
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}
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