github.com/galamsiva2020/kubernetes-heapster-monitoring@v0.0.0-20210823134957-3c1baa7c1e70/events/sinks/manager_test.go (about)

     1  // Copyright 2015 Google Inc. All Rights Reserved.
     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 sinks
    16  
    17  import (
    18  	"testing"
    19  	"time"
    20  
    21  	"github.com/stretchr/testify/assert"
    22  	kube_api "k8s.io/api/core/v1"
    23  
    24  	"k8s.io/heapster/events/core"
    25  	"k8s.io/heapster/events/util"
    26  )
    27  
    28  func doThreeBatches(manager core.EventSink) time.Duration {
    29  	now := time.Now()
    30  	batch := core.EventBatch{
    31  		Timestamp: now,
    32  		Events:    []*kube_api.Event{},
    33  	}
    34  
    35  	manager.ExportEvents(&batch)
    36  	manager.ExportEvents(&batch)
    37  	manager.ExportEvents(&batch)
    38  
    39  	elapsed := time.Now().Sub(now)
    40  	return elapsed
    41  }
    42  
    43  func TestAllExportsInTime(t *testing.T) {
    44  	timeout := 3 * time.Second
    45  
    46  	sink1 := util.NewDummySink("s1", time.Second)
    47  	sink2 := util.NewDummySink("s2", time.Second)
    48  	manager, _ := NewEventSinkManager([]core.EventSink{sink1, sink2}, timeout, timeout)
    49  
    50  	elapsed := doThreeBatches(manager)
    51  	if elapsed > 2*timeout+2*time.Second {
    52  		t.Fatalf("3xExportEvents took too long: %s", elapsed)
    53  	}
    54  
    55  	assert.Equal(t, 3, sink1.GetExportCount())
    56  	assert.Equal(t, 3, sink2.GetExportCount())
    57  }
    58  
    59  func TestOneExportInTime(t *testing.T) {
    60  	timeout := 3 * time.Second
    61  
    62  	sink1 := util.NewDummySink("s1", time.Second)
    63  	sink2 := util.NewDummySink("s2", 30*time.Second)
    64  	manager, _ := NewEventSinkManager([]core.EventSink{sink1, sink2}, timeout, timeout)
    65  
    66  	elapsed := doThreeBatches(manager)
    67  	if elapsed > 2*timeout+2*time.Second {
    68  		t.Fatalf("3xExportEvents took too long: %s", elapsed)
    69  	}
    70  	if elapsed < 2*timeout-1*time.Second {
    71  		t.Fatalf("3xExportEvents took too short: %s", elapsed)
    72  	}
    73  
    74  	assert.Equal(t, 3, sink1.GetExportCount())
    75  	assert.Equal(t, 1, sink2.GetExportCount())
    76  }
    77  
    78  func TestNoExportInTime(t *testing.T) {
    79  	timeout := 3 * time.Second
    80  
    81  	sink1 := util.NewDummySink("s1", 30*time.Second)
    82  	sink2 := util.NewDummySink("s2", 30*time.Second)
    83  	manager, _ := NewEventSinkManager([]core.EventSink{sink1, sink2}, timeout, timeout)
    84  
    85  	elapsed := doThreeBatches(manager)
    86  	if elapsed > 2*timeout+2*time.Second {
    87  		t.Fatalf("3xExportEvents took too long: %s", elapsed)
    88  	}
    89  	if elapsed < 2*timeout-1*time.Second {
    90  		t.Fatalf("3xExportEvents took too short: %s", elapsed)
    91  	}
    92  
    93  	assert.Equal(t, 1, sink1.GetExportCount())
    94  	assert.Equal(t, 1, sink2.GetExportCount())
    95  }
    96  
    97  func TestStop(t *testing.T) {
    98  	timeout := 3 * time.Second
    99  
   100  	sink1 := util.NewDummySink("s1", 30*time.Second)
   101  	sink2 := util.NewDummySink("s2", 30*time.Second)
   102  	manager, _ := NewEventSinkManager([]core.EventSink{sink1, sink2}, timeout, timeout)
   103  
   104  	now := time.Now()
   105  	manager.Stop()
   106  	elapsed := time.Now().Sub(now)
   107  	if elapsed > time.Second {
   108  		t.Fatalf("stop too long: %s", elapsed)
   109  	}
   110  	time.Sleep(time.Second)
   111  
   112  	assert.Equal(t, true, sink1.IsStopped())
   113  	assert.Equal(t, true, sink2.IsStopped())
   114  }