forked from Netflix/go-expect
-
Notifications
You must be signed in to change notification settings - Fork 0
/
test_log.go
91 lines (76 loc) · 2.14 KB
/
test_log.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
// Copyright 2018 Netflix, Inc.
//
// 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 expect
import (
"bufio"
"io"
"strings"
"testing"
)
// NewTestConsole returns a new Console that multiplexes the application's
// stdout to go's testing logger. Primarily so that outputs from parallel tests
// using t.Parallel() is not interleaved.
func NewTestConsole(t *testing.T, opts ...ConsoleOpt) (*Console, error) {
tf, err := NewTestWriter(t)
if err != nil {
return nil, err
}
return NewConsole(append(opts, WithStdout(tf))...)
}
// NewTestWriter returns an io.Writer where bytes written to the file are
// logged by go's testing logger. Bytes are flushed to the logger on line end.
func NewTestWriter(t *testing.T) (io.Writer, error) {
r, w := io.Pipe()
tw := testWriter{t}
go func() {
defer r.Close()
br := bufio.NewReader(r)
for {
line, _, err := br.ReadLine()
if err != nil {
return
}
_, err = tw.Write(line)
if err != nil {
return
}
}
}()
return w, nil
}
// testWriter provides a io.Writer interface to go's testing logger.
type testWriter struct {
t *testing.T
}
func (tw testWriter) Write(p []byte) (n int, err error) {
tw.t.Log(string(p))
return len(p), nil
}
// StripTrailingEmptyLines returns a copy of s stripped of trailing lines that
// consist of only space characters.
func StripTrailingEmptyLines(out string) string {
lines := strings.Split(out, "\n")
if len(lines) < 2 {
return out
}
for i := len(lines) - 1; i >= 0; i-- {
stripped := strings.Replace(lines[i], " ", "", -1)
if len(stripped) == 0 {
lines = lines[:len(lines)-1]
} else {
break
}
}
return strings.Join(lines, "\n")
}