github.com/whtcorpsinc/MilevaDB-Prod@v0.0.0-20211104133533-f57f4be3b597/soliton/memcam/memcam_test.go (about)

     1  // Copyright 2020 WHTCORPS INC, Inc.
     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  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package memcam
    15  
    16  import (
    17  	"testing"
    18  
    19  	. "github.com/whtcorpsinc/check"
    20  )
    21  
    22  func TestT(t *testing.T) {
    23  	TestingT(t)
    24  }
    25  
    26  func TestSimpleMemCamSlabPredictor(t *testing.T) {
    27  	memcam := NewSlabPredictor(1000)
    28  	slice := memcam.Alloc(10)
    29  	if memcam.off != 10 {
    30  		t.Error("off not match, expect 10 bug got", memcam.off)
    31  	}
    32  
    33  	if len(slice) != 0 || cap(slice) != 10 {
    34  		t.Error("slice length or cap not match")
    35  	}
    36  
    37  	slice = memcam.Alloc(20)
    38  	if memcam.off != 30 {
    39  		t.Error("off not match, expect 30 bug got", memcam.off)
    40  	}
    41  
    42  	if len(slice) != 0 || cap(slice) != 20 {
    43  		t.Error("slice length or cap not match")
    44  	}
    45  
    46  	slice = memcam.Alloc(1024)
    47  	if memcam.off != 30 {
    48  		t.Error("off not match, expect 30 bug got", memcam.off)
    49  	}
    50  
    51  	if len(slice) != 0 || cap(slice) != 1024 {
    52  		t.Error("slice length or cap not match")
    53  	}
    54  
    55  	slice = memcam.AllocWithLen(2, 10)
    56  	if memcam.off != 40 {
    57  		t.Error("off not match, expect 40 bug got", memcam.off)
    58  	}
    59  
    60  	if len(slice) != 2 || cap(slice) != 10 {
    61  		t.Error("slice length or cap not match")
    62  	}
    63  
    64  	memcam.Reset()
    65  	if memcam.off != 0 || cap(memcam.memcam) != 1000 {
    66  		t.Error("off or cap not match")
    67  	}
    68  }
    69  
    70  func TestStdSlabPredictor(t *testing.T) {
    71  	slice := StdSlabPredictor.Alloc(20)
    72  	if len(slice) != 0 {
    73  		t.Error("length not match")
    74  	}
    75  
    76  	if cap(slice) != 20 {
    77  		t.Error("cap not match")
    78  	}
    79  
    80  	slice = StdSlabPredictor.AllocWithLen(10, 20)
    81  	if len(slice) != 10 {
    82  		t.Error("length not match")
    83  	}
    84  
    85  	if cap(slice) != 20 {
    86  		t.Error("cap not match")
    87  	}
    88  }