runtime_cache_test.go

Documentation: k8s.io/kubernetes/pkg/kubelet/container

     1  /*
     2  Copyright 2015 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 container_test
    18  
    19  import (
    20  	"context"
    21  	"reflect"
    22  	"testing"
    23  	"time"
    24  
    25  	. "k8s.io/kubernetes/pkg/kubelet/container"
    26  	ctest "k8s.io/kubernetes/pkg/kubelet/container/testing"
    27  )
    28  
    29  func comparePods(t *testing.T, expected []*ctest.FakePod, actual []*Pod) {
    30  	if len(expected) != len(actual) {
    31  		t.Errorf("expected %d pods, got %d instead", len(expected), len(actual))
    32  	}
    33  	for i := range expected {
    34  		if !reflect.DeepEqual(expected[i].Pod, actual[i]) {
    35  			t.Errorf("expected %#v, got %#v", expected[i].Pod, actual[i])
    36  		}
    37  	}
    38  }
    39  
    40  func TestGetPods(t *testing.T) {
    41  	ctx := context.Background()
    42  	runtime := &ctest.FakeRuntime{}
    43  	expected := []*ctest.FakePod{{Pod: &Pod{ID: "1111"}}, {Pod: &Pod{ID: "2222"}}, {Pod: &Pod{ID: "3333"}}}
    44  	runtime.PodList = expected
    45  	cache := NewTestRuntimeCache(runtime)
    46  	actual, err := cache.GetPods(ctx)
    47  	if err != nil {
    48  		t.Errorf("unexpected error %v", err)
    49  	}
    50  
    51  	comparePods(t, expected, actual)
    52  }
    53  
    54  func TestForceUpdateIfOlder(t *testing.T) {
    55  	ctx := context.Background()
    56  	runtime := &ctest.FakeRuntime{}
    57  	cache := NewTestRuntimeCache(runtime)
    58  
    59  	// Cache old pods.
    60  	oldpods := []*ctest.FakePod{{Pod: &Pod{ID: "1111"}}}
    61  	runtime.PodList = oldpods
    62  	cache.UpdateCacheWithLock()
    63  
    64  	// Update the runtime to new pods.
    65  	newpods := []*ctest.FakePod{{Pod: &Pod{ID: "1111"}}, {Pod: &Pod{ID: "2222"}}, {Pod: &Pod{ID: "3333"}}}
    66  	runtime.PodList = newpods
    67  
    68  	// An older timestamp should not force an update.
    69  	cache.ForceUpdateIfOlder(ctx, time.Now().Add(-20*time.Minute))
    70  	actual := cache.GetCachedPods()
    71  	comparePods(t, oldpods, actual)
    72  
    73  	// A newer timestamp should force an update.
    74  	cache.ForceUpdateIfOlder(ctx, time.Now().Add(20*time.Second))
    75  	actual = cache.GetCachedPods()
    76  	comparePods(t, newpods, actual)
    77  }
    78
View as plain text