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// Copyright 2018 Google LLC
//
// 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 leakcheck
import (
"fmt"
"strings"
"testing"
"time"
)
type testErrorfer struct {
errorCount int
errors []string
}
func (e *testErrorfer) Errorf(format string, args ...interface{}) {
e.errors = append(e.errors, fmt.Sprintf(format, args...))
e.errorCount++
}
func TestCheck(t *testing.T) {
const leakCount = 3
for i := 0; i < leakCount; i++ {
go func() { time.Sleep(2 * time.Second) }()
}
if ig := interestingGoroutines(); len(ig) == 0 {
t.Error("blah")
}
e := &testErrorfer{}
check(e, time.Second)
if e.errorCount != leakCount {
t.Errorf("check found %v leaks, want %v leaks", e.errorCount, leakCount)
t.Logf("leaked goroutines:\n%v", strings.Join(e.errors, "\n"))
}
check(t, 3*time.Second)
}
func ignoredTestingLeak(d time.Duration) {
time.Sleep(d)
}
func TestCheckRegisterIgnore(t *testing.T) {
RegisterIgnoreGoroutine("ignoredTestingLeak")
const leakCount = 3
for i := 0; i < leakCount; i++ {
go func() { time.Sleep(2 * time.Second) }()
}
go func() { ignoredTestingLeak(3 * time.Second) }()
if ig := interestingGoroutines(); len(ig) == 0 {
t.Error("blah")
}
e := &testErrorfer{}
check(e, time.Second)
if e.errorCount != leakCount {
t.Errorf("check found %v leaks, want %v leaks", e.errorCount, leakCount)
t.Logf("leaked goroutines:\n%v", strings.Join(e.errors, "\n"))
}
check(t, 3*time.Second)
}
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