istio.io/istio@v0.0.0-20240520182934-d79c90f27776/tests/util/leak/check_test.go (about)

     1  // Copyright Istio 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 leak
    16  
    17  import (
    18  	"testing"
    19  	"time"
    20  )
    21  
    22  func TestMain(m *testing.M) {
    23  	CheckMain(m)
    24  }
    25  
    26  func TestLeak(t *testing.T) {
    27  	gracePeriod = time.Millisecond * 50
    28  	t.Run("no leak", func(t *testing.T) {
    29  		if err := check(nil); err != nil {
    30  			t.Fatal(err)
    31  		}
    32  	})
    33  	t.Run("leak", func(t *testing.T) {
    34  		stop := make(chan struct{})
    35  		go func() {
    36  			<-stop
    37  		}()
    38  		if err := check(nil); err == nil {
    39  			t.Fatal("expected a leak, found none")
    40  		}
    41  		close(stop)
    42  		if err := check(nil); err != nil {
    43  			t.Fatal(err)
    44  		}
    45  	})
    46  }