k8s.io/kubernetes@v1.31.0-alpha.0.0.20240520171757-56147500dadc/pkg/kubelet/config/mux_test.go (about)

     1  /*
     2  Copyright 2014 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package config
    18  
    19  import (
    20  	"context"
    21  	"reflect"
    22  	"testing"
    23  )
    24  
    25  func TestConfigurationChannels(t *testing.T) {
    26  	ctx, cancel := context.WithCancel(context.Background())
    27  	defer cancel()
    28  
    29  	mux := newMux(nil)
    30  	channelOne := mux.ChannelWithContext(ctx, "one")
    31  	if channelOne != mux.ChannelWithContext(ctx, "one") {
    32  		t.Error("Didn't get the same muxuration channel back with the same name")
    33  	}
    34  	channelTwo := mux.ChannelWithContext(ctx, "two")
    35  	if channelOne == channelTwo {
    36  		t.Error("Got back the same muxuration channel for different names")
    37  	}
    38  }
    39  
    40  type MergeMock struct {
    41  	source string
    42  	update interface{}
    43  	t      *testing.T
    44  }
    45  
    46  func (m MergeMock) Merge(source string, update interface{}) error {
    47  	if m.source != source {
    48  		m.t.Errorf("Expected %s, Got %s", m.source, source)
    49  	}
    50  	if !reflect.DeepEqual(m.update, update) {
    51  		m.t.Errorf("Expected %s, Got %s", m.update, update)
    52  	}
    53  	return nil
    54  }
    55  
    56  func TestMergeInvoked(t *testing.T) {
    57  	ctx, cancel := context.WithCancel(context.Background())
    58  	defer cancel()
    59  
    60  	merger := MergeMock{"one", "test", t}
    61  	mux := newMux(&merger)
    62  	mux.ChannelWithContext(ctx, "one") <- "test"
    63  }
    64  
    65  // mergeFunc implements the Merger interface
    66  type mergeFunc func(source string, update interface{}) error
    67  
    68  func (f mergeFunc) Merge(source string, update interface{}) error {
    69  	return f(source, update)
    70  }
    71  
    72  func TestSimultaneousMerge(t *testing.T) {
    73  	ctx, cancel := context.WithCancel(context.Background())
    74  	defer cancel()
    75  
    76  	ch := make(chan bool, 2)
    77  	mux := newMux(mergeFunc(func(source string, update interface{}) error {
    78  		switch source {
    79  		case "one":
    80  			if update.(string) != "test" {
    81  				t.Errorf("Expected %s, Got %s", "test", update)
    82  			}
    83  		case "two":
    84  			if update.(string) != "test2" {
    85  				t.Errorf("Expected %s, Got %s", "test2", update)
    86  			}
    87  		default:
    88  			t.Errorf("Unexpected source, Got %s", update)
    89  		}
    90  		ch <- true
    91  		return nil
    92  	}))
    93  	source := mux.ChannelWithContext(ctx, "one")
    94  	source2 := mux.ChannelWithContext(ctx, "two")
    95  	source <- "test"
    96  	source2 <- "test2"
    97  	<-ch
    98  	<-ch
    99  }