go.etcd.io/etcd@v3.3.27+incompatible/pkg/testutil/leak_test.go (about)

     1  // Copyright 2016 The etcd Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package testutil
    16  
    17  import (
    18  	"fmt"
    19  	"os"
    20  	"testing"
    21  )
    22  
    23  // so tests pass if given a -run that doesn't include TestSample
    24  var ranSample = false
    25  
    26  func TestMain(m *testing.M) {
    27  	m.Run()
    28  	isLeaked := CheckLeakedGoroutine()
    29  	if ranSample && !isLeaked {
    30  		fmt.Fprintln(os.Stderr, "expected leaky goroutines but none is detected")
    31  		os.Exit(1)
    32  	}
    33  	os.Exit(0)
    34  }
    35  
    36  func TestSample(t *testing.T) {
    37  	defer AfterTest(t)
    38  	ranSample = true
    39  	for range make([]struct{}, 100) {
    40  		go func() {
    41  			select {}
    42  		}()
    43  	}
    44  }