mirror of https://github.com/prometheus/prometheus
Signed-off-by: Bartek Plotka <bwplotka@gmail.com>pull/5893/head
Bartek Plotka
5 years ago
parent
70ce3df23c
commit
f0863a604e
@ -1,182 +0,0 @@
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// Copyright 2013 The Prometheus 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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package testutil
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import (
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"crypto/sha256"
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"io"
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"io/ioutil"
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"os"
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"path/filepath"
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"strconv"
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"testing"
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)
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const (
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// The base directory used for test emissions, which instructs the operating
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// system to use the default temporary directory as the base or TMPDIR
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// environment variable.
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defaultDirectory = ""
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// NilCloser is a no-op Closer.
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NilCloser = nilCloser(true)
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// The number of times that a TemporaryDirectory will retry its removal
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temporaryDirectoryRemoveRetries = 2
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)
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type (
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// Closer is the interface that wraps the Close method.
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Closer interface {
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// Close reaps the underlying directory and its children. The directory
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// could be deleted by its users already.
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Close()
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}
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nilCloser bool
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// TemporaryDirectory models a closeable path for transient POSIX disk
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// activities.
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TemporaryDirectory interface {
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Closer
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// Path returns the underlying path for access.
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Path() string
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}
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// temporaryDirectory is kept as a private type due to private fields and
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// their interactions.
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temporaryDirectory struct {
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path string
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tester T
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}
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callbackCloser struct {
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fn func()
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}
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// T implements the needed methods of testing.TB so that we do not need
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// to actually import testing (which has the side effect of adding all
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// the test flags, which we do not want in non-test binaries even if
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// they make use of these utilities for some reason).
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T interface {
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Fatal(args ...interface{})
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Fatalf(format string, args ...interface{})
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}
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)
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func (c nilCloser) Close() {
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}
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func (c callbackCloser) Close() {
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c.fn()
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}
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// NewCallbackCloser returns a Closer that calls the provided function upon
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// closing.
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func NewCallbackCloser(fn func()) Closer {
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return &callbackCloser{
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fn: fn,
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}
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}
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func (t temporaryDirectory) Close() {
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retries := temporaryDirectoryRemoveRetries
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err := os.RemoveAll(t.path)
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for err != nil && retries > 0 {
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switch {
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case os.IsNotExist(err):
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err = nil
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default:
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retries--
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err = os.RemoveAll(t.path)
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}
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}
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if err != nil {
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t.tester.Fatal(err)
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}
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}
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func (t temporaryDirectory) Path() string {
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return t.path
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}
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// NewTemporaryDirectory creates a new temporary directory for transient POSIX
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// activities.
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func NewTemporaryDirectory(name string, t T) (handler TemporaryDirectory) {
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var (
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directory string
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err error
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)
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directory, err = ioutil.TempDir(defaultDirectory, name)
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if err != nil {
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t.Fatal(err)
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}
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handler = temporaryDirectory{
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path: directory,
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tester: t,
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}
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return
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}
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// DirSize returns the size in bytes of all files in a directory.
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func DirSize(t *testing.T, path string) int64 {
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var size int64
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err := filepath.Walk(path, func(_ string, info os.FileInfo, err error) error {
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Ok(t, err)
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if !info.IsDir() {
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size += info.Size()
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}
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return nil
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})
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Ok(t, err)
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return size
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}
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// DirHash returns a hash of all files attribites and their content within a directory.
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func DirHash(t *testing.T, path string) []byte {
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hash := sha256.New()
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err := filepath.Walk(path, func(path string, info os.FileInfo, err error) error {
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Ok(t, err)
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if info.IsDir() {
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return nil
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}
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f, err := os.Open(path)
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Ok(t, err)
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defer f.Close()
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_, err = io.Copy(hash, f)
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Ok(t, err)
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_, err = io.WriteString(hash, strconv.Itoa(int(info.Size())))
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Ok(t, err)
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_, err = io.WriteString(hash, info.Name())
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Ok(t, err)
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modTime, err := info.ModTime().GobEncode()
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Ok(t, err)
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_, err = io.WriteString(hash, string(modTime))
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Ok(t, err)
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return nil
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})
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Ok(t, err)
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return hash.Sum(nil)
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}
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@ -1,87 +0,0 @@
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// The MIT License (MIT)
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// Copyright (c) 2014 Ben Johnson
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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package testutil
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import (
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"fmt"
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"path/filepath"
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"reflect"
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"runtime"
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"testing"
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)
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// Assert fails the test if the condition is false.
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func Assert(tb testing.TB, condition bool, msg string, v ...interface{}) {
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if !condition {
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_, file, line, _ := runtime.Caller(1)
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fmt.Printf("\033[31m%s:%d: "+msg+"\033[39m\n\n", append([]interface{}{filepath.Base(file), line}, v...)...)
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tb.FailNow()
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}
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}
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// Ok fails the test if an err is not nil.
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func Ok(tb testing.TB, err error) {
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if err != nil {
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_, file, line, _ := runtime.Caller(1)
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fmt.Printf("\033[31m%s:%d: unexpected error: %s\033[39m\n\n", filepath.Base(file), line, err.Error())
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tb.FailNow()
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}
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}
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// NotOk fails the test if an err is nil.
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func NotOk(tb testing.TB, err error) {
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if err == nil {
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_, file, line, _ := runtime.Caller(1)
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fmt.Printf("\033[31m%s:%d: expected error, got nothing \033[39m\n\n", filepath.Base(file), line)
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tb.FailNow()
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}
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}
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// Equals fails the test if exp is not equal to act.
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func Equals(tb testing.TB, exp, act interface{}, msgAndArgs ...interface{}) {
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if !reflect.DeepEqual(exp, act) {
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_, file, line, _ := runtime.Caller(1)
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fmt.Printf("\033[31m%s:%d:%s\n\n\texp: %#v\n\n\tgot: %#v\033[39m\n\n", filepath.Base(file), line, formatMessage(msgAndArgs), exp, act)
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tb.FailNow()
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}
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}
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// NotEquals fails the test if exp is equal to act.
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func NotEquals(tb testing.TB, exp, act interface{}) {
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if reflect.DeepEqual(exp, act) {
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_, file, line, _ := runtime.Caller(1)
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fmt.Printf("\033[31m%s:%d: Expected different exp and got\n\n\texp: %#v\n\n\tgot: %#v\033[39m\n\n", filepath.Base(file), line, exp, act)
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tb.FailNow()
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}
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}
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func formatMessage(msgAndArgs []interface{}) string {
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if len(msgAndArgs) == 0 {
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return ""
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}
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if msg, ok := msgAndArgs[0].(string); ok {
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return fmt.Sprintf("\n\nmsg: "+msg, msgAndArgs[1:]...)
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}
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return ""
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}
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