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// Copyright 2021 The etcd 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 testutil
import (
"io/ioutil"
"log"
"os"
)
// TB is a subset of methods of testing.TB interface.
// We cannot implement testing.TB due to protection, so we expose this simplified interface.
type TB interface {
Cleanup(func())
Error(args ...interface{})
Errorf(format string, args ...interface{})
Fail()
FailNow()
Failed() bool
Fatal(args ...interface{})
Fatalf(format string, args ...interface{})
Logf(format string, args ...interface{})
Name() string
TempDir() string
Helper()
Skip(args ...interface{})
}
// NewTestingTBProthesis creates a fake variant of testing.TB implementation.
// It's supposed to be used in contexts were real testing.T is not provided,
// e.g. in 'examples'.
//
// The `closef` goroutine should get executed when tb will not be needed any longer.
//
// The provided implementation is NOT thread safe (Cleanup() method).
func NewTestingTBProthesis(name string) (tb TB, closef func()) {
testtb := &testingTBProthesis{name: name}
return testtb, testtb.close
}
type testingTBProthesis struct {
name string
failed bool
cleanups []func()
}
func (t *testingTBProthesis) Helper() {
// Ignored
}
func (t *testingTBProthesis) Skip(args ...interface{}) {
t.Log(append([]interface{}{"Skipping due to: "}, args...))
}
func (t *testingTBProthesis) Cleanup(f func()) {
t.cleanups = append(t.cleanups, f)
}
func (t *testingTBProthesis) Error(args ...interface{}) {
log.Println(args...)
t.Fail()
}
func (t *testingTBProthesis) Errorf(format string, args ...interface{}) {
log.Printf(format, args...)
t.Fail()
}
func (t *testingTBProthesis) Fail() {
t.failed = true
}
func (t *testingTBProthesis) FailNow() {
t.failed = true
panic("FailNow() called")
}
func (t *testingTBProthesis) Failed() bool {
return t.failed
}
func (t *testingTBProthesis) Fatal(args ...interface{}) {
log.Fatalln(args...)
}
func (t *testingTBProthesis) Fatalf(format string, args ...interface{}) {
log.Fatalf(format, args...)
}
func (t *testingTBProthesis) Logf(format string, args ...interface{}) {
log.Printf(format, args...)
}
func (t *testingTBProthesis) Log(args ...interface{}) {
log.Println(args...)
}
func (t *testingTBProthesis) Name() string {
return t.name
}
func (t *testingTBProthesis) TempDir() string {
dir, err := ioutil.TempDir("", t.name)
if err != nil {
t.Fatal(err)
}
t.cleanups = append([]func(){func() {
t.Logf("Cleaning UP: %v", dir)
os.RemoveAll(dir)
}}, t.cleanups...)
return dir
}
func (t *testingTBProthesis) close() {
for i := len(t.cleanups) - 1; i >= 0; i-- {
t.cleanups[i]()
}
}
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