github.com/pawelgaczynski/gain@v0.4.0-alpha.0.20230821120126-41f1e60a18da/pkg/pool/virtualmem/virtualmem_pool_test.go (about)

     1  // Copyright (c) 2023 Paweł Gaczyński
     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 virtualmem
    16  
    17  import (
    18  	"fmt"
    19  	"os"
    20  	"runtime"
    21  	"testing"
    22  
    23  	. "github.com/stretchr/testify/require"
    24  )
    25  
    26  func TestVirtualMemPool(t *testing.T) {
    27  	pool := NewPool()
    28  
    29  	size := os.Getpagesize()
    30  	vm := NewVirtualMem(size)
    31  
    32  	pool.Put(vm)
    33  
    34  	vmFromPool := pool.Get(size)
    35  
    36  	Same(t, vm, vmFromPool)
    37  	runtime.KeepAlive(vm)
    38  
    39  	vm = Get(size)
    40  
    41  	Put(vm)
    42  
    43  	vmFromPool = Get(size)
    44  
    45  	Same(t, vm, vmFromPool)
    46  	runtime.KeepAlive(vm)
    47  
    48  	Nil(t, pool.Get(0))
    49  	Nil(t, pool.Get(-1))
    50  
    51  	vm = NewVirtualMem(maxVMSize + pageSize)
    52  
    53  	pool.Put(vm)
    54  
    55  	vmFromPool = pool.Get(maxVMSize + pageSize)
    56  
    57  	NotEqual(t, fmt.Sprintf("%p\n", vmFromPool), fmt.Sprintf("%p\n", vm))
    58  
    59  	runtime.KeepAlive(vm)
    60  }