github.com/m3db/m3@v1.5.0/src/dbnode/encoding/annotation_holder_test.go (about)

     1  // Copyright (c) 2021 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 encoding
    22  
    23  import (
    24  	"bytes"
    25  	"testing"
    26  
    27  	"github.com/stretchr/testify/assert"
    28  
    29  	"github.com/m3db/m3/src/dbnode/ts"
    30  )
    31  
    32  var annotationHolderTests = []struct {
    33  	name       string
    34  	annotation ts.Annotation
    35  }{
    36  	{
    37  		name: "nil",
    38  	},
    39  	{
    40  		name:       "empty",
    41  		annotation: []byte{},
    42  	},
    43  	{
    44  		name:       "short",
    45  		annotation: []byte{1, 2, 3},
    46  	},
    47  	{
    48  		name:       "OptimizedAnnotationLen - 1",
    49  		annotation: repeat(1, ts.OptimizedAnnotationLen-1),
    50  	},
    51  	{
    52  		name:       "OptimizedAnnotationLen",
    53  		annotation: repeat(2, ts.OptimizedAnnotationLen),
    54  	},
    55  	{
    56  		name:       "OptimizedAnnotationLen + 1",
    57  		annotation: repeat(3, ts.OptimizedAnnotationLen+1),
    58  	},
    59  	{
    60  		name:       "OptimizedAnnotationLen * 2",
    61  		annotation: repeat(4, ts.OptimizedAnnotationLen*2),
    62  	},
    63  }
    64  
    65  func TestAnnotationHolder(t *testing.T) {
    66  	holder := annotationHolder{}
    67  	assert.Nil(t, holder.get())
    68  
    69  	for _, tt := range annotationHolderTests {
    70  		t.Run(tt.name, func(t *testing.T) {
    71  			holder.set(tt.annotation)
    72  			if len(tt.annotation) == 0 {
    73  				assert.Empty(t, holder.get())
    74  			} else {
    75  				assert.Equal(t, tt.annotation, holder.get())
    76  			}
    77  		})
    78  	}
    79  }
    80  
    81  func TestAnnotationHolderWithReset(t *testing.T) {
    82  	holder := annotationHolder{}
    83  	holder.reset()
    84  	assert.Nil(t, holder.get())
    85  
    86  	for _, tt := range annotationHolderTests {
    87  		t.Run(tt.name, func(t *testing.T) {
    88  			holder.set(tt.annotation)
    89  			if len(tt.annotation) == 0 {
    90  				assert.Empty(t, holder.get())
    91  			} else {
    92  				assert.Equal(t, tt.annotation, holder.get())
    93  			}
    94  			holder.reset()
    95  			assert.Nil(t, holder.get())
    96  		})
    97  	}
    98  }
    99  
   100  func repeat(b byte, n int) ts.Annotation {
   101  	return bytes.Repeat([]byte{b}, n)
   102  }