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
92
93
94
95
96
97
98
99
100
101
102
|
// Copyright (c) 2017 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 goleak
import (
"errors"
"fmt"
"go.uber.org/goleak/internal/stack"
)
// TestingT is the minimal subset of testing.TB that we use.
type TestingT interface {
Error(...interface{})
}
// filterStacks will filter any stacks excluded by the given opts.
// filterStacks modifies the passed in stacks slice.
func filterStacks(stacks []stack.Stack, skipID int, opts *opts) []stack.Stack {
filtered := stacks[:0]
for _, stack := range stacks {
// Always skip the running goroutine.
if stack.ID() == skipID {
continue
}
// Run any default or user-specified filters.
if opts.filter(stack) {
continue
}
filtered = append(filtered, stack)
}
return filtered
}
// Find looks for extra goroutines, and returns a descriptive error if
// any are found.
func Find(options ...Option) error {
cur := stack.Current().ID()
opts := buildOpts(options...)
if opts.cleanup != nil {
return errors.New("Cleanup can only be passed to VerifyNone or VerifyTestMain")
}
var stacks []stack.Stack
retry := true
for i := 0; retry; i++ {
stacks = filterStacks(stack.All(), cur, opts)
if len(stacks) == 0 {
return nil
}
retry = opts.retry(i)
}
return fmt.Errorf("found unexpected goroutines:\n%s", stacks)
}
type testHelper interface {
Helper()
}
// VerifyNone marks the given TestingT as failed if any extra goroutines are
// found by Find. This is a helper method to make it easier to integrate in
// tests by doing:
//
// defer VerifyNone(t)
func VerifyNone(t TestingT, options ...Option) {
opts := buildOpts(options...)
var cleanup func(int)
cleanup, opts.cleanup = opts.cleanup, nil
if h, ok := t.(testHelper); ok {
// Mark this function as a test helper, if available.
h.Helper()
}
if err := Find(opts); err != nil {
t.Error(err)
}
if cleanup != nil {
cleanup(0)
}
}
|
