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71 lines
1.8 KiB
Go
71 lines
1.8 KiB
Go
/*
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Copyright 2018 The Kubernetes 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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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 harness
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import (
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"os"
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"testing"
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"k8s.io/klog/v2"
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)
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// Harness adds some functionality to testing.T, in particular resource cleanup.
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// It embeds testing.T, so should have the same signature.
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//
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// Example usage:
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// ```
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// func MyTest(tt *testing.T) {
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// t := harness.For(tt)
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// defer t.Close()
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// ...
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// }
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// ```
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type Harness struct {
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*testing.T
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defers []func() error
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}
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// For creates a Harness from a testing.T
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// Callers must call Close on the Harness so that resources can be cleaned up
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func For(t *testing.T) *Harness {
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h := &Harness{T: t}
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return h
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}
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// Close cleans up any owned resources, and should be called in a defer block after For
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func (h *Harness) Close() {
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for _, d := range h.defers {
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if err := d(); err != nil {
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klog.Warningf("error closing harness: %v", err)
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}
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}
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}
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// TempDir is a wrapper around os.MkdirTemp for tests.
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// It automatically fails the test if we can't create a temp file,
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// and deletes the temp directory when Close is called on the Harness
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func (h *Harness) TempDir(baseDir string, prefix string) string {
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tempDir, err := os.MkdirTemp(baseDir, prefix)
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if err != nil {
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h.Fatalf("unable to create tempdir: %v", err)
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}
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h.defers = append(h.defers, func() error {
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return os.RemoveAll(tempDir)
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})
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return tempDir
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}
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