go.temporal.io/server@v1.23.0/common/clock/hybrid_logical_clock/hybrid_logical_clock_test.go (about)

     1  // The MIT License
     2  //
     3  // Copyright (c) 2020 Temporal Technologies Inc.  All rights reserved.
     4  //
     5  // Copyright (c) 2020 Uber Technologies, Inc.
     6  //
     7  // Permission is hereby granted, free of charge, to any person obtaining a copy
     8  // of this software and associated documentation files (the "Software"), to deal
     9  // in the Software without restriction, including without limitation the rights
    10  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    11  // copies of the Software, and to permit persons to whom the Software is
    12  // furnished to do so, subject to the following conditions:
    13  //
    14  // The above copyright notice and this permission notice shall be included in
    15  // all copies or substantial portions of the Software.
    16  //
    17  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    18  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    19  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    20  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    21  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    22  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    23  // THE SOFTWARE.
    24  
    25  package hybrid_logical_clock
    26  
    27  import (
    28  	"testing"
    29  	"time"
    30  
    31  	"github.com/stretchr/testify/assert"
    32  	"go.temporal.io/server/common/clock"
    33  )
    34  
    35  func Test_Next_ReturnsGreaterClock(t *testing.T) {
    36  	t.Parallel()
    37  	t0 := Zero(1)
    38  	timesource := clock.NewEventTimeSource()
    39  
    40  	// Same wallclock
    41  	timesource.Update(time.Unix(0, 0).UTC())
    42  	t1 := Next(t0, timesource)
    43  	assert.Equal(t, 1, Compare(t0, t1))
    44  	// Greater wallclock
    45  	timesource.Update(time.Unix(0, 1).UTC())
    46  	t2 := Next(t1, timesource)
    47  	assert.Equal(t, 1, Compare(t1, t2))
    48  }
    49  
    50  func Test_Compare(t *testing.T) {
    51  	t.Parallel()
    52  	t0 := Clock{WallClock: 1, Version: 1, ClusterId: 1}
    53  	t1 := Clock{WallClock: 1, Version: 1, ClusterId: 1}
    54  	assert.Equal(t, 0, Compare(&t0, &t1))
    55  	assert.True(t, Equal(&t0, &t1))
    56  
    57  	t0 = Clock{WallClock: 1, Version: 1, ClusterId: 1}
    58  	t1 = Clock{WallClock: 1, Version: 1, ClusterId: 2}
    59  	assert.Equal(t, 1, Compare(&t0, &t1))
    60  	// Let's get a -1 in there for sanity
    61  	assert.Equal(t, -1, Compare(&t1, &t0))
    62  
    63  	t0 = Clock{WallClock: 1, Version: 1, ClusterId: 1}
    64  	t1 = Clock{WallClock: 1, Version: 2, ClusterId: 1}
    65  	assert.Equal(t, 1, Compare(&t0, &t1))
    66  
    67  	t0 = Clock{WallClock: 1, Version: 1, ClusterId: 1}
    68  	t1 = Clock{WallClock: 2, Version: 1, ClusterId: 1}
    69  	assert.Equal(t, 1, Compare(&t0, &t1))
    70  
    71  	assert.True(t, Greater(&t1, &t0))
    72  	assert.True(t, Less(&t0, &t1))
    73  }
    74  
    75  func Test_Max_ReturnsMaximum(t *testing.T) {
    76  	t.Parallel()
    77  	t0 := Zero(1)
    78  	t1 := Zero(2)
    79  
    80  	max := Max(t0, t1)
    81  	assert.Equal(t, max, t1)
    82  	// Just in case it doesn't work in reverse order...
    83  	max = Max(t1, t0)
    84  	assert.Equal(t, max, t1)
    85  }
    86  
    87  func Test_Min_ReturnsMinimum(t *testing.T) {
    88  	t.Parallel()
    89  	t0 := Zero(1)
    90  	t1 := Zero(2)
    91  
    92  	min := Min(t0, t1)
    93  	assert.Equal(t, min, t0)
    94  	// Just in case it doesn't work in reverse order...
    95  	min = Min(t1, t0)
    96  	assert.Equal(t, min, t0)
    97  }
    98  
    99  func Test_UTC_ReturnsTimeInUTC(t *testing.T) {
   100  	t.Parallel()
   101  	assert.Equal(t, time.Unix(0, 0).UTC(), UTC(Zero(0)))
   102  
   103  	timesource := clock.NewEventTimeSource()
   104  	now := time.Date(1999, 12, 31, 23, 59, 59, 999000000, time.UTC)
   105  	timesource.Update(now)
   106  	assert.Equal(t, now, UTC(Next(Zero(0), timesource)))
   107  }