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// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package testing_test
import (
"flag"
"fmt"
"internal/testenv"
"os"
"os/exec"
"regexp"
"strings"
"testing"
)
var testPanicTest = flag.String("test_panic_test", "", "TestPanic: indicates which test should panic")
var testPanicParallel = flag.Bool("test_panic_parallel", false, "TestPanic: run subtests in parallel")
var testPanicCleanup = flag.Bool("test_panic_cleanup", false, "TestPanic: indicates whether test should call Cleanup")
var testPanicCleanupPanic = flag.String("test_panic_cleanup_panic", "", "TestPanic: indicate whether test should call Cleanup function that panics")
func TestPanic(t *testing.T) {
testenv.MustHaveExec(t)
testCases := []struct {
desc string
flags []string
want string
}{{
desc: "root test panics",
flags: []string{"-test_panic_test=TestPanicHelper"},
want: `
--- FAIL: TestPanicHelper (N.NNs)
panic_test.go:NNN: TestPanicHelper
`,
}, {
desc: "subtest panics",
flags: []string{"-test_panic_test=TestPanicHelper/1"},
want: `
--- FAIL: TestPanicHelper (N.NNs)
panic_test.go:NNN: TestPanicHelper
--- FAIL: TestPanicHelper/1 (N.NNs)
panic_test.go:NNN: TestPanicHelper/1
`,
}, {
desc: "subtest panics with cleanup",
flags: []string{"-test_panic_test=TestPanicHelper/1", "-test_panic_cleanup"},
want: `
ran inner cleanup 1
ran middle cleanup 1
ran outer cleanup
--- FAIL: TestPanicHelper (N.NNs)
panic_test.go:NNN: TestPanicHelper
--- FAIL: TestPanicHelper/1 (N.NNs)
panic_test.go:NNN: TestPanicHelper/1
`,
}, {
desc: "subtest panics with outer cleanup panic",
flags: []string{"-test_panic_test=TestPanicHelper/1", "-test_panic_cleanup", "-test_panic_cleanup_panic=outer"},
want: `
ran inner cleanup 1
ran middle cleanup 1
ran outer cleanup
--- FAIL: TestPanicHelper (N.NNs)
panic_test.go:NNN: TestPanicHelper
`,
}, {
desc: "subtest panics with middle cleanup panic",
flags: []string{"-test_panic_test=TestPanicHelper/1", "-test_panic_cleanup", "-test_panic_cleanup_panic=middle"},
want: `
ran inner cleanup 1
ran middle cleanup 1
ran outer cleanup
--- FAIL: TestPanicHelper (N.NNs)
panic_test.go:NNN: TestPanicHelper
--- FAIL: TestPanicHelper/1 (N.NNs)
panic_test.go:NNN: TestPanicHelper/1
`,
}, {
desc: "subtest panics with inner cleanup panic",
flags: []string{"-test_panic_test=TestPanicHelper/1", "-test_panic_cleanup", "-test_panic_cleanup_panic=inner"},
want: `
ran inner cleanup 1
ran middle cleanup 1
ran outer cleanup
--- FAIL: TestPanicHelper (N.NNs)
panic_test.go:NNN: TestPanicHelper
--- FAIL: TestPanicHelper/1 (N.NNs)
panic_test.go:NNN: TestPanicHelper/1
`,
}, {
desc: "parallel subtest panics with cleanup",
flags: []string{"-test_panic_test=TestPanicHelper/1", "-test_panic_cleanup", "-test_panic_parallel"},
want: `
ran inner cleanup 1
ran middle cleanup 1
ran outer cleanup
--- FAIL: TestPanicHelper (N.NNs)
panic_test.go:NNN: TestPanicHelper
--- FAIL: TestPanicHelper/1 (N.NNs)
panic_test.go:NNN: TestPanicHelper/1
`,
}, {
desc: "parallel subtest panics with outer cleanup panic",
flags: []string{"-test_panic_test=TestPanicHelper/1", "-test_panic_cleanup", "-test_panic_cleanup_panic=outer", "-test_panic_parallel"},
want: `
ran inner cleanup 1
ran middle cleanup 1
ran outer cleanup
--- FAIL: TestPanicHelper (N.NNs)
panic_test.go:NNN: TestPanicHelper
`,
}, {
desc: "parallel subtest panics with middle cleanup panic",
flags: []string{"-test_panic_test=TestPanicHelper/1", "-test_panic_cleanup", "-test_panic_cleanup_panic=middle", "-test_panic_parallel"},
want: `
ran inner cleanup 1
ran middle cleanup 1
ran outer cleanup
--- FAIL: TestPanicHelper (N.NNs)
panic_test.go:NNN: TestPanicHelper
--- FAIL: TestPanicHelper/1 (N.NNs)
panic_test.go:NNN: TestPanicHelper/1
`,
}, {
desc: "parallel subtest panics with inner cleanup panic",
flags: []string{"-test_panic_test=TestPanicHelper/1", "-test_panic_cleanup", "-test_panic_cleanup_panic=inner", "-test_panic_parallel"},
want: `
ran inner cleanup 1
ran middle cleanup 1
ran outer cleanup
--- FAIL: TestPanicHelper (N.NNs)
panic_test.go:NNN: TestPanicHelper
--- FAIL: TestPanicHelper/1 (N.NNs)
panic_test.go:NNN: TestPanicHelper/1
`,
}}
for _, tc := range testCases {
t.Run(tc.desc, func(t *testing.T) {
cmd := exec.Command(os.Args[0], "-test.run=TestPanicHelper")
cmd.Args = append(cmd.Args, tc.flags...)
cmd.Env = append(os.Environ(), "GO_WANT_HELPER_PROCESS=1")
b, _ := cmd.CombinedOutput()
got := string(b)
want := strings.TrimSpace(tc.want)
re := makeRegexp(want)
if ok, err := regexp.MatchString(re, got); !ok || err != nil {
t.Errorf("output:\ngot:\n%s\nwant:\n%s", got, want)
}
})
}
}
func makeRegexp(s string) string {
s = regexp.QuoteMeta(s)
s = strings.ReplaceAll(s, ":NNN:", `:\d+:`)
s = strings.ReplaceAll(s, "N\\.NNs", `\d*\.\d*s`)
return s
}
func TestPanicHelper(t *testing.T) {
if os.Getenv("GO_WANT_HELPER_PROCESS") != "1" {
return
}
t.Log(t.Name())
if t.Name() == *testPanicTest {
panic("panic")
}
switch *testPanicCleanupPanic {
case "", "outer", "middle", "inner":
default:
t.Fatalf("bad -test_panic_cleanup_panic: %s", *testPanicCleanupPanic)
}
t.Cleanup(func() {
fmt.Println("ran outer cleanup")
if *testPanicCleanupPanic == "outer" {
panic("outer cleanup")
}
})
for i := 0; i < 3; i++ {
i := i
t.Run(fmt.Sprintf("%v", i), func(t *testing.T) {
chosen := t.Name() == *testPanicTest
if chosen && *testPanicCleanup {
t.Cleanup(func() {
fmt.Printf("ran middle cleanup %d\n", i)
if *testPanicCleanupPanic == "middle" {
panic("middle cleanup")
}
})
}
if chosen && *testPanicParallel {
t.Parallel()
}
t.Log(t.Name())
if chosen {
if *testPanicCleanup {
t.Cleanup(func() {
fmt.Printf("ran inner cleanup %d\n", i)
if *testPanicCleanupPanic == "inner" {
panic("inner cleanup")
}
})
}
panic("panic")
}
})
}
}
|
