provider_test.go

Documentation: k8s.io/kubernetes/pkg/credentialprovider

     1  /*
     2  Copyright 2020 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 credentialprovider
    18  
    19  import (
    20  	"testing"
    21  	"time"
    22  )
    23  
    24  type testProvider struct {
    25  	Count int
    26  }
    27  
    28  // Enabled implements dockerConfigProvider
    29  func (d *testProvider) Enabled() bool {
    30  	return true
    31  }
    32  
    33  // Provide implements dockerConfigProvider
    34  func (d *testProvider) Provide(image string) DockerConfig {
    35  	d.Count++
    36  	return DockerConfig{}
    37  }
    38  
    39  func TestCachingProvider(t *testing.T) {
    40  	provider := &testProvider{
    41  		Count: 0,
    42  	}
    43  
    44  	cache := &CachingDockerConfigProvider{
    45  		Provider: provider,
    46  		Lifetime: 1 * time.Second,
    47  	}
    48  
    49  	image := "image"
    50  
    51  	if provider.Count != 0 {
    52  		t.Errorf("Unexpected number of Provide calls: %v", provider.Count)
    53  	}
    54  	cache.Provide(image)
    55  	cache.Provide(image)
    56  	cache.Provide(image)
    57  	cache.Provide(image)
    58  	if provider.Count != 1 {
    59  		t.Errorf("Unexpected number of Provide calls: %v", provider.Count)
    60  	}
    61  
    62  	time.Sleep(cache.Lifetime)
    63  	cache.Provide(image)
    64  	cache.Provide(image)
    65  	cache.Provide(image)
    66  	cache.Provide(image)
    67  	if provider.Count != 2 {
    68  		t.Errorf("Unexpected number of Provide calls: %v", provider.Count)
    69  	}
    70  
    71  	time.Sleep(cache.Lifetime)
    72  	cache.Provide(image)
    73  	cache.Provide(image)
    74  	cache.Provide(image)
    75  	cache.Provide(image)
    76  	if provider.Count != 3 {
    77  		t.Errorf("Unexpected number of Provide calls: %v", provider.Count)
    78  	}
    79  }
    80
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