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tparallel.go |
tparallel
tparallel
finds inappropriate usage of t.Parallel()
method in your Go test codes.
It detects the following:
t.Parallel()
is called in either a top-level test function or a sub-test function only- Although
t.Parallel()
is called in the sub-test function, it is post-processed bydefer
instead oft.Cleanup()
This tool was inspired by this blog: Go言語でのテストの並列化 〜t.Parallel()メソッドを理解する〜
Installation
From GitHub Releases
Please see GitHub Releases.
Available binaries are:
- macOS
- Linux
- Windows
macOS
$ brew tap moricho/tparallel
$ brew install tparallel
go get
$ go get -u github.com/moricho/tparallel/cmd/tparallel
Usage
$ go vet -vettool=`which tparallel` <pkgname>
Example
package sample
import (
"testing"
)
func Test_Table1(t *testing.T) {
teardown := setup("Test_Table1")
defer teardown()
tests := []struct {
name string
}{
{
name: "Table1_Sub1",
},
{
name: "Table1_Sub2",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
t.Parallel()
call(tt.name)
})
}
}
func Test_Table2(t *testing.T) {
teardown := setup("Test_Table2")
t.Cleanup(teardown)
t.Parallel()
tests := []struct {
name string
}{
{
name: "Table2_Sub1",
},
{
name: "Table2_Sub2",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
call(tt.name)
})
}
}
# github.com/moricho/tparallel/testdata/src/sample
testdata/src/sample/table_test.go:7:6: Test_Table1 should use t.Cleanup
testdata/src/sample/table_test.go:7:6: Test_Table1 should call t.Parallel on the top level as well as its subtests
testdata/src/sample/table_test.go:30:6: Test_Table2's subtests should call t.Parallel