97 lines
2.9 KiB
Go
97 lines
2.9 KiB
Go
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// Copyright (c) 2016 Uber Technologies, Inc.
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//
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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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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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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
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// THE SOFTWARE.
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package ztest
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import (
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"bytes"
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"errors"
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"io/ioutil"
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"strings"
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)
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// A Syncer is a spy for the Sync portion of zapcore.WriteSyncer.
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type Syncer struct {
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err error
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called bool
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}
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// SetError sets the error that the Sync method will return.
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func (s *Syncer) SetError(err error) {
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s.err = err
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}
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// Sync records that it was called, then returns the user-supplied error (if
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// any).
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func (s *Syncer) Sync() error {
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s.called = true
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return s.err
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}
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// Called reports whether the Sync method was called.
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func (s *Syncer) Called() bool {
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return s.called
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}
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// A Discarder sends all writes to ioutil.Discard.
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type Discarder struct{ Syncer }
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// Write implements io.Writer.
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func (d *Discarder) Write(b []byte) (int, error) {
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return ioutil.Discard.Write(b)
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}
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// FailWriter is a WriteSyncer that always returns an error on writes.
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type FailWriter struct{ Syncer }
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// Write implements io.Writer.
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func (w FailWriter) Write(b []byte) (int, error) {
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return len(b), errors.New("failed")
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}
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// ShortWriter is a WriteSyncer whose write method never fails, but
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// nevertheless fails to the last byte of the input.
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type ShortWriter struct{ Syncer }
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// Write implements io.Writer.
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func (w ShortWriter) Write(b []byte) (int, error) {
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return len(b) - 1, nil
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}
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// Buffer is an implementation of zapcore.WriteSyncer that sends all writes to
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// a bytes.Buffer. It has convenience methods to split the accumulated buffer
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// on newlines.
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type Buffer struct {
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bytes.Buffer
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Syncer
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}
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// Lines returns the current buffer contents, split on newlines.
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func (b *Buffer) Lines() []string {
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output := strings.Split(b.String(), "\n")
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return output[:len(output)-1]
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}
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// Stripped returns the current buffer contents with the last trailing newline
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// stripped.
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func (b *Buffer) Stripped() string {
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return strings.TrimRight(b.String(), "\n")
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}
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