97 lines
2.9 KiB
Go
97 lines
2.9 KiB
Go
// Copyright (c) 2016 Uber Technologies, Inc.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
// THE SOFTWARE.
|
|
|
|
package ztest
|
|
|
|
import (
|
|
"bytes"
|
|
"errors"
|
|
"io/ioutil"
|
|
"strings"
|
|
)
|
|
|
|
// A Syncer is a spy for the Sync portion of zapcore.WriteSyncer.
|
|
type Syncer struct {
|
|
err error
|
|
called bool
|
|
}
|
|
|
|
// SetError sets the error that the Sync method will return.
|
|
func (s *Syncer) SetError(err error) {
|
|
s.err = err
|
|
}
|
|
|
|
// Sync records that it was called, then returns the user-supplied error (if
|
|
// any).
|
|
func (s *Syncer) Sync() error {
|
|
s.called = true
|
|
return s.err
|
|
}
|
|
|
|
// Called reports whether the Sync method was called.
|
|
func (s *Syncer) Called() bool {
|
|
return s.called
|
|
}
|
|
|
|
// A Discarder sends all writes to ioutil.Discard.
|
|
type Discarder struct{ Syncer }
|
|
|
|
// Write implements io.Writer.
|
|
func (d *Discarder) Write(b []byte) (int, error) {
|
|
return ioutil.Discard.Write(b)
|
|
}
|
|
|
|
// FailWriter is a WriteSyncer that always returns an error on writes.
|
|
type FailWriter struct{ Syncer }
|
|
|
|
// Write implements io.Writer.
|
|
func (w FailWriter) Write(b []byte) (int, error) {
|
|
return len(b), errors.New("failed")
|
|
}
|
|
|
|
// ShortWriter is a WriteSyncer whose write method never fails, but
|
|
// nevertheless fails to the last byte of the input.
|
|
type ShortWriter struct{ Syncer }
|
|
|
|
// Write implements io.Writer.
|
|
func (w ShortWriter) Write(b []byte) (int, error) {
|
|
return len(b) - 1, nil
|
|
}
|
|
|
|
// Buffer is an implementation of zapcore.WriteSyncer that sends all writes to
|
|
// a bytes.Buffer. It has convenience methods to split the accumulated buffer
|
|
// on newlines.
|
|
type Buffer struct {
|
|
bytes.Buffer
|
|
Syncer
|
|
}
|
|
|
|
// Lines returns the current buffer contents, split on newlines.
|
|
func (b *Buffer) Lines() []string {
|
|
output := strings.Split(b.String(), "\n")
|
|
return output[:len(output)-1]
|
|
}
|
|
|
|
// Stripped returns the current buffer contents with the last trailing newline
|
|
// stripped.
|
|
func (b *Buffer) Stripped() string {
|
|
return strings.TrimRight(b.String(), "\n")
|
|
}
|