vitess.io/vitess@v0.16.2/go/sync2/atomic_test.go (about)

     1  /*
     2  Copyright 2019 The Vitess Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package sync2
    18  
    19  import (
    20  	"testing"
    21  	"time"
    22  
    23  	"gotest.tools/assert"
    24  )
    25  
    26  func TestAtomicInt32(t *testing.T) {
    27  	i := NewAtomicInt32(1)
    28  	assert.Equal(t, int32(1), i.Get())
    29  
    30  	i.Set(2)
    31  	assert.Equal(t, int32(2), i.Get())
    32  
    33  	i.Add(1)
    34  	assert.Equal(t, int32(3), i.Get())
    35  
    36  	i.CompareAndSwap(3, 4)
    37  	assert.Equal(t, int32(4), i.Get())
    38  
    39  	i.CompareAndSwap(3, 5)
    40  	assert.Equal(t, int32(4), i.Get())
    41  }
    42  
    43  func TestAtomicInt64(t *testing.T) {
    44  	i := NewAtomicInt64(1)
    45  	assert.Equal(t, int64(1), i.Get())
    46  
    47  	i.Set(2)
    48  	assert.Equal(t, int64(2), i.Get())
    49  
    50  	i.Add(1)
    51  	assert.Equal(t, int64(3), i.Get())
    52  
    53  	i.CompareAndSwap(3, 4)
    54  	assert.Equal(t, int64(4), i.Get())
    55  
    56  	i.CompareAndSwap(3, 5)
    57  	assert.Equal(t, int64(4), i.Get())
    58  }
    59  
    60  func TestAtomicFloat64(t *testing.T) {
    61  	i := NewAtomicFloat64(1.0)
    62  	assert.Equal(t, float64(1.0), i.Get())
    63  
    64  	i.Set(2.0)
    65  	assert.Equal(t, float64(2.0), i.Get())
    66  	{
    67  		swapped := i.CompareAndSwap(2.0, 4.0)
    68  		assert.Equal(t, float64(4), i.Get())
    69  		assert.Equal(t, true, swapped)
    70  	}
    71  	{
    72  		swapped := i.CompareAndSwap(2.0, 5.0)
    73  		assert.Equal(t, float64(4), i.Get())
    74  		assert.Equal(t, false, swapped)
    75  	}
    76  }
    77  
    78  func TestAtomicDuration(t *testing.T) {
    79  	d := NewAtomicDuration(time.Second)
    80  	assert.Equal(t, time.Second, d.Get())
    81  
    82  	d.Set(time.Second * 2)
    83  	assert.Equal(t, time.Second*2, d.Get())
    84  
    85  	d.Add(time.Second)
    86  	assert.Equal(t, time.Second*3, d.Get())
    87  
    88  	d.CompareAndSwap(time.Second*3, time.Second*4)
    89  	assert.Equal(t, time.Second*4, d.Get())
    90  
    91  	d.CompareAndSwap(time.Second*3, time.Second*5)
    92  	assert.Equal(t, time.Second*4, d.Get())
    93  }
    94  
    95  func TestAtomicString(t *testing.T) {
    96  	var s AtomicString
    97  	assert.Equal(t, "", s.Get())
    98  
    99  	s.Set("a")
   100  	assert.Equal(t, "a", s.Get())
   101  
   102  	assert.Equal(t, false, s.CompareAndSwap("b", "c"))
   103  	assert.Equal(t, "a", s.Get())
   104  
   105  	assert.Equal(t, true, s.CompareAndSwap("a", "c"))
   106  	assert.Equal(t, "c", s.Get())
   107  }
   108  
   109  func TestAtomicBool(t *testing.T) {
   110  	b := NewAtomicBool(true)
   111  	assert.Equal(t, true, b.Get())
   112  
   113  	b.Set(false)
   114  	assert.Equal(t, false, b.Get())
   115  
   116  	b.Set(true)
   117  	assert.Equal(t, true, b.Get())
   118  
   119  	assert.Equal(t, false, b.CompareAndSwap(false, true))
   120  
   121  	assert.Equal(t, true, b.CompareAndSwap(true, false))
   122  
   123  	assert.Equal(t, true, b.CompareAndSwap(false, false))
   124  
   125  	assert.Equal(t, true, b.CompareAndSwap(false, true))
   126  
   127  	assert.Equal(t, true, b.CompareAndSwap(true, true))
   128  }