github.com/matrixorigin/matrixone@v0.7.0/pkg/vm/engine/tae/logtail/service/response_test.go (about)

     1  // Copyright 2021 Matrix Origin
     2  // Licensed under the Apache License, Version 2.0 (the "License");
     3  // you may not use this file except in compliance with the License.
     4  // You may obtain a copy of the License at
     5  //
     6  //	http://www.apache.org/licenses/LICENSE-2.0
     7  //
     8  // Unless required by applicable law or agreed to in writing, software
     9  // distributed under the License is distributed on an "AS IS" BASIS,
    10  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package service
    15  
    16  import (
    17  	"math"
    18  	"testing"
    19  
    20  	"github.com/stretchr/testify/require"
    21  )
    22  
    23  func TestResponseSize(t *testing.T) {
    24  	maxMessageSize := 1024
    25  	pool := NewSegmentPool(maxMessageSize)
    26  
    27  	/* --- Fetch a segment --- */
    28  	prev := pool.Acquire()
    29  	t.Log("segment size:", prev.ProtoSize())
    30  	require.True(t, prev.ProtoSize() > maxMessageSize)
    31  
    32  	/* --- Release it --- */
    33  	pool.Release(prev)
    34  
    35  	/* --- Fetch again --- */
    36  	curr := pool.Acquire()
    37  	t.Log("segment size:", curr.ProtoSize())
    38  	require.Equal(t, prev.ProtoSize(), curr.ProtoSize())
    39  
    40  	curr.StreamID = math.MaxUint64
    41  	curr.Sequence = math.MaxInt32
    42  	curr.MaxSequence = math.MaxInt32
    43  	curr.MessageSize = math.MaxInt32
    44  	t.Log("max proto size:", curr.ProtoSize())
    45  
    46  	limit := 2*maxMessageSize - curr.ProtoSize()
    47  	t.Log("limited size:", limit)
    48  	curr.Payload = curr.Payload[:limit]
    49  	t.Log("final segment size:", curr.ProtoSize())
    50  	require.Equal(t, curr.ProtoSize(), maxMessageSize)
    51  }