github.com/lirm/aeron-go@v0.0.0-20230415210743-920325491dc4/aeron/command/flyweights_test.go (about)

     1  // Copyright 2022 Steven Stern
     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  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package command
    16  
    17  import (
    18  	"github.com/lirm/aeron-go/aeron/atomic"
    19  	"github.com/stretchr/testify/suite"
    20  	"testing"
    21  )
    22  
    23  type FlyweightsTestSuite struct {
    24  	suite.Suite
    25  
    26  	byteSlice []byte
    27  	buffer    *atomic.Buffer
    28  	flyweight CounterMessage
    29  }
    30  
    31  func (s *FlyweightsTestSuite) SetupTest() {
    32  	s.byteSlice = make([]byte, 128)
    33  	s.buffer = atomic.MakeBuffer(s.byteSlice)
    34  }
    35  
    36  func (s *FlyweightsTestSuite) TestCounterMessageKeyBuffer() {
    37  	offset := 24
    38  	for i := 0; i <= offset; i++ {
    39  		s.byteSlice[i] = byte(15)
    40  	}
    41  	s.flyweight.Wrap(s.buffer, offset)
    42  
    43  	newBuffer := atomic.MakeBuffer(make([]byte, 16))
    44  	s.flyweight.CopyKeyBuffer(newBuffer, 4, 8)
    45  
    46  	s.Assert().EqualValues(8, s.flyweight.key.Length())
    47  }
    48  
    49  func (s *FlyweightsTestSuite) TestCounterMessageLabelBuffer() {
    50  	offset := 40
    51  	for i := 0; i <= offset; i++ {
    52  		s.byteSlice[i] = byte(255)
    53  	}
    54  	s.flyweight.Wrap(s.buffer, offset)
    55  
    56  	keyBuffer := atomic.MakeBuffer(make([]byte, 16))
    57  	keyCopySize := int32(9)
    58  	s.flyweight.CopyKeyBuffer(keyBuffer, 6, keyCopySize)
    59  
    60  	labelBuffer := atomic.MakeBuffer(make([]byte, 32))
    61  	labelCopySize := int32(21)
    62  	s.flyweight.CopyLabelBuffer(labelBuffer, 2, labelCopySize)
    63  
    64  	s.Assert().EqualValues(9, s.flyweight.key.Length())
    65  	s.Assert().EqualValues(21, s.flyweight.label.Length())
    66  	// Expected is sizes of: long, long, int, length field, keyCopySize
    67  	s.Assert().EqualValues(8+8+4+4+keyCopySize, s.flyweight.getLabelOffset())
    68  	// Above, plus label length and size
    69  	s.Assert().EqualValues(8+8+4+4+keyCopySize+4+labelCopySize, s.flyweight.Size())
    70  }
    71  
    72  func (s *FlyweightsTestSuite) TestCounterMessageLabelString() {
    73  	offset := 40
    74  	for i := 0; i <= offset; i++ {
    75  		s.byteSlice[i] = byte(255)
    76  	}
    77  	s.flyweight.Wrap(s.buffer, offset)
    78  
    79  	label := "Steve loves Aeron"
    80  	s.flyweight.CopyLabelString(label)
    81  
    82  	s.Assert().EqualValues(0, s.flyweight.key.Length())
    83  	s.Assert().EqualValues(len(label), s.flyweight.label.Length())
    84  	// Expected is sizes of: long, long, int, length field (key is empty)
    85  	s.Assert().EqualValues(8+8+4+4, s.flyweight.getLabelOffset())
    86  	// Above, plus label length and size
    87  	s.Assert().EqualValues(8+8+4+4+4+len(label), s.flyweight.Size())
    88  }
    89  
    90  func TestFlyweights(t *testing.T) {
    91  	suite.Run(t, new(FlyweightsTestSuite))
    92  }