github.com/cayleygraph/cayley@v0.7.7/internal/lru/lru_test.go (about)

     1  // Copyright 2014 The Cayley Authors. 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 lru
    16  
    17  import (
    18  	"fmt"
    19  	"testing"
    20  )
    21  
    22  // checks fatal error: concurrent map read and map write
    23  
    24  func TestPanicLRUCache(t *testing.T) {
    25  	xch := make(chan int)
    26  	c := New(1024)
    27  	for i := 0; i < 100; i++ {
    28  		go func(i int) {
    29  			key := fmt.Sprintf("Key%d", i)
    30  			c.Put(key, i)
    31  			c.Get(key)
    32  			xch <- i
    33  
    34  		}(i)
    35  
    36  	}
    37  	for i := 0; i < 100; i++ {
    38  		<-xch
    39  	}
    40  
    41  }