mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-16 17:21:04 +01:00
75 lines
2.2 KiB
Markdown
75 lines
2.2 KiB
Markdown
# goleak [![GoDoc][doc-img]][doc] [![Build Status][ci-img]][ci] [![Coverage Status][cov-img]][cov]
|
|
|
|
Goroutine leak detector to help avoid Goroutine leaks.
|
|
|
|
## Installation
|
|
|
|
You can use `go get` to get the latest version:
|
|
|
|
`go get -u go.uber.org/goleak`
|
|
|
|
`goleak` also supports semver releases.
|
|
|
|
Note that go-leak only [supports][release] the two most recent minor versions of Go.
|
|
|
|
## Quick Start
|
|
|
|
To verify that there are no unexpected goroutines running at the end of a test:
|
|
|
|
```go
|
|
func TestA(t *testing.T) {
|
|
defer goleak.VerifyNone(t)
|
|
|
|
// test logic here.
|
|
}
|
|
```
|
|
|
|
Instead of checking for leaks at the end of every test, `goleak` can also be run
|
|
at the end of every test package by creating a `TestMain` function for your
|
|
package:
|
|
|
|
```go
|
|
func TestMain(m *testing.M) {
|
|
goleak.VerifyTestMain(m)
|
|
}
|
|
```
|
|
|
|
## Determine Source of Package Leaks
|
|
|
|
When verifying leaks using `TestMain`, the leak test is only run once after all tests
|
|
have been run. This is typically enough to ensure there's no goroutines leaked from
|
|
tests, but when there are leaks, it's hard to determine which test is causing them.
|
|
|
|
You can use the following bash script to determine the source of the failing test:
|
|
|
|
```sh
|
|
# Create a test binary which will be used to run each test individually
|
|
$ go test -c -o tests
|
|
|
|
# Run each test individually, printing "." for successful tests, or the test name
|
|
# for failing tests.
|
|
$ for test in $(go test -list . | grep -E "^(Test|Example)"); do ./tests -test.run "^$test\$" &>/dev/null && echo -n "." || echo -e "\n$test failed"; done
|
|
```
|
|
|
|
This will only print names of failing tests which can be investigated individually. E.g.,
|
|
|
|
```
|
|
.....
|
|
TestLeakyTest failed
|
|
.......
|
|
```
|
|
|
|
## Stability
|
|
|
|
goleak is v1 and follows [SemVer](http://semver.org/) strictly.
|
|
|
|
No breaking changes will be made to exported APIs before 2.0.
|
|
|
|
[doc-img]: https://godoc.org/go.uber.org/goleak?status.svg
|
|
[doc]: https://godoc.org/go.uber.org/goleak
|
|
[ci-img]: https://github.com/uber-go/goleak/actions/workflows/go.yml/badge.svg
|
|
[ci]: https://github.com/uber-go/goleak/actions/workflows/go.yml
|
|
[cov-img]: https://codecov.io/gh/uber-go/goleak/branch/master/graph/badge.svg
|
|
[cov]: https://codecov.io/gh/uber-go/goleak
|
|
[release]: https://go.dev/doc/devel/release#policy
|