k8s.io/client-go@v0.22.2/tools/cache/thread_safe_store_test.go (about)

     1  /*
     2  Copyright 2019 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 cache
    18  
    19  import (
    20  	"testing"
    21  )
    22  
    23  func TestThreadSafeStoreDeleteRemovesEmptySetsFromIndex(t *testing.T) {
    24  	testIndexer := "testIndexer"
    25  
    26  	indexers := Indexers{
    27  		testIndexer: func(obj interface{}) (strings []string, e error) {
    28  			indexes := []string{obj.(string)}
    29  			return indexes, nil
    30  		},
    31  	}
    32  
    33  	indices := Indices{}
    34  	store := NewThreadSafeStore(indexers, indices).(*threadSafeMap)
    35  
    36  	testKey := "testKey"
    37  
    38  	store.Add(testKey, testKey)
    39  
    40  	// Assumption check, there should be a set for the `testKey` with one element in the added index
    41  	set := store.indices[testIndexer][testKey]
    42  
    43  	if len(set) != 1 {
    44  		t.Errorf("Initial assumption of index backing string set having 1 element failed. Actual elements: %d", len(set))
    45  		return
    46  	}
    47  
    48  	store.Delete(testKey)
    49  	set, present := store.indices[testIndexer][testKey]
    50  
    51  	if present {
    52  		t.Errorf("Index backing string set not deleted from index. Set length: %d", len(set))
    53  	}
    54  }
    55  
    56  func TestThreadSafeStoreAddKeepsNonEmptySetPostDeleteFromIndex(t *testing.T) {
    57  	testIndexer := "testIndexer"
    58  	testIndex := "testIndex"
    59  
    60  	indexers := Indexers{
    61  		testIndexer: func(obj interface{}) (strings []string, e error) {
    62  			indexes := []string{testIndex}
    63  			return indexes, nil
    64  		},
    65  	}
    66  
    67  	indices := Indices{}
    68  	store := NewThreadSafeStore(indexers, indices).(*threadSafeMap)
    69  
    70  	store.Add("retain", "retain")
    71  	store.Add("delete", "delete")
    72  
    73  	// Assumption check, there should be a set for the `testIndex` with two elements
    74  	set := store.indices[testIndexer][testIndex]
    75  
    76  	if len(set) != 2 {
    77  		t.Errorf("Initial assumption of index backing string set having 2 elements failed. Actual elements: %d", len(set))
    78  		return
    79  	}
    80  
    81  	store.Delete("delete")
    82  	set, present := store.indices[testIndexer][testIndex]
    83  
    84  	if !present {
    85  		t.Errorf("Index backing string set erroneously deleted from index.")
    86  		return
    87  	}
    88  
    89  	if len(set) != 1 {
    90  		t.Errorf("Index backing string set has incorrect length, expect 1. Set length: %d", len(set))
    91  	}
    92  }