github.com/m3db/m3@v1.5.0/src/x/generics/arraypool/pool_test.go (about)

     1  // Copyright (c) 2018 Uber Technologies, Inc.
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
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     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package arraypool
    22  
    23  import (
    24  	"testing"
    25  
    26  	"github.com/m3db/m3/src/x/pool"
    27  
    28  	"github.com/stretchr/testify/require"
    29  )
    30  
    31  func TestArrayPool(t *testing.T) {
    32  	pool := newElemArrayPool(elemArrayPoolOpts{
    33  		Capacity: 10,
    34  		Options:  pool.NewObjectPoolOptions(),
    35  	})
    36  	require.NotNil(t, pool)
    37  
    38  	pool.Init()
    39  	e := pool.Get()
    40  	require.NotNil(t, e)
    41  	pool.Put(e)
    42  }
    43  
    44  func TestArrayPoolPut(t *testing.T) {
    45  	var original []elemType
    46  	finalizeFn := func(arr []elemType) []elemType {
    47  		require.Equal(t, original, arr)
    48  		return arr
    49  	}
    50  	pool := newElemArrayPool(elemArrayPoolOpts{
    51  		Capacity:   10,
    52  		Options:    pool.NewObjectPoolOptions(),
    53  		FinalizeFn: finalizeFn,
    54  	})
    55  	require.NotNil(t, pool)
    56  	pool.Init()
    57  	original = pool.Get()
    58  	require.NotNil(t, original)
    59  	pool.Put(original)
    60  }
    61  
    62  func TestElemArrGrow(t *testing.T) {
    63  	var results elemArr
    64  	require.Len(t, results, 0)
    65  	results = results.grow(10)
    66  	require.Len(t, results, 10)
    67  	results = results.grow(100)
    68  	require.Len(t, results, 100)
    69  }
    70  
    71  func TestElemArrGrowResetsValue(t *testing.T) {
    72  	var (
    73  		empty   elemType
    74  		results elemArr
    75  	)
    76  	require.Len(t, results, 0)
    77  	results = results.grow(10)
    78  	require.Len(t, results, 10)
    79  	for _, elem := range results {
    80  		require.Equal(t, empty, elem)
    81  	}
    82  }
    83  
    84  func TestElemArrGrowPanic(t *testing.T) {
    85  	var results elemArr
    86  	require.Len(t, results, 0)
    87  	results = results.grow(100)
    88  	require.Len(t, results, 100)
    89  	results = results[:0]
    90  	results = results.grow(1)
    91  	require.Len(t, results, 1)
    92  }