github.com/m3db/m3@v1.5.0/src/dbnode/storage/block/result_pool_test.go (about)

     1  // Copyright (c) 2016 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
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     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 block
    22  
    23  import (
    24  	"testing"
    25  
    26  	"github.com/m3db/m3/src/x/ident"
    27  	"github.com/m3db/m3/src/x/pool"
    28  	xtime "github.com/m3db/m3/src/x/time"
    29  
    30  	"github.com/stretchr/testify/require"
    31  )
    32  
    33  func testResultPoolOptions(size int) pool.ObjectPoolOptions {
    34  	return pool.NewObjectPoolOptions().SetSize(size)
    35  }
    36  
    37  func TestFetchBlockMetadataResultsPoolResetOnPut(t *testing.T) {
    38  	p := NewFetchBlockMetadataResultsPool(testResultPoolOptions(1), 64)
    39  	res := p.Get()
    40  
    41  	// Make res non-empty
    42  	res.Add(NewFetchBlockMetadataResult(xtime.Now(), 0, nil, 0, nil))
    43  	require.Equal(t, 1, len(res.Results()))
    44  
    45  	// Return res to pool
    46  	p.Put(res)
    47  
    48  	// Verify res has been reset
    49  	res = p.Get()
    50  	require.Equal(t, 0, len(res.Results()))
    51  }
    52  
    53  func TestFetchBlockMetadataResultsPoolRejectLargeSliceOnPut(t *testing.T) {
    54  	p := NewFetchBlockMetadataResultsPool(testResultPoolOptions(1), 64)
    55  	res := p.Get()
    56  
    57  	// Make res a large slice
    58  	iter := 1024
    59  	for i := 0; i < iter; i++ {
    60  		res.Add(NewFetchBlockMetadataResult(xtime.Now(), 0, nil, 0, nil))
    61  	}
    62  	require.True(t, cap(res.Results()) > 64)
    63  
    64  	// Return res to pool
    65  	p.Put(res)
    66  
    67  	// Verify res wasn't put into pool
    68  	res = p.Get()
    69  	require.Equal(t, 64, cap(res.Results()))
    70  }
    71  
    72  func TestFetchBlocksMetadataResultsPoolResetOnPut(t *testing.T) {
    73  	p := NewFetchBlocksMetadataResultsPool(testResultPoolOptions(1), 64)
    74  	res := p.Get()
    75  
    76  	// Make res non-empty
    77  	res.Add(NewFetchBlocksMetadataResult(ident.StringID("foo"),
    78  		ident.EmptyTagIterator, NewFetchBlockMetadataResults()))
    79  	require.Equal(t, 1, len(res.Results()))
    80  
    81  	// Return res to pool
    82  	p.Put(res)
    83  
    84  	// Verify res has been reset
    85  	res = p.Get()
    86  	require.Equal(t, 0, len(res.Results()))
    87  }
    88  
    89  func TestFetchBlocksMetadataResultsPoolRejectLargeSliceOnPut(t *testing.T) {
    90  	p := NewFetchBlocksMetadataResultsPool(testResultPoolOptions(1), 64)
    91  	res := p.Get()
    92  
    93  	// Make res a large slice
    94  	iter := 1024
    95  	for i := 0; i < iter; i++ {
    96  		res.Add(NewFetchBlocksMetadataResult(ident.StringID("foo"),
    97  			ident.EmptyTagIterator, NewFetchBlockMetadataResults()))
    98  	}
    99  	require.True(t, cap(res.Results()) > 64)
   100  
   101  	// Return res to pool
   102  	p.Put(res)
   103  
   104  	// Verify res wasn't put into pool
   105  	res = p.Get()
   106  	require.Equal(t, 64, cap(res.Results()))
   107  }