github.com/vescale/zgraph@v0.0.0-20230410094002-959c02d50f95/storage/mvcc/codec_test.go (about)

     1  // Copyright 2022 zGraph Authors. All rights reserved.
     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 mvcc
    16  
    17  import (
    18  	"bytes"
    19  	"testing"
    20  
    21  	"github.com/stretchr/testify/assert"
    22  )
    23  
    24  func TestEncode(t *testing.T) {
    25  	t1 := Encode([]byte("test"), 1)
    26  	t2 := Encode([]byte("test"), 2)
    27  	r := bytes.Compare(t1, t2)
    28  	assert.True(t, r > 0)
    29  }
    30  
    31  func TestDecode(t *testing.T) {
    32  	r, v, err := Decode([]byte("test"))
    33  	assert.ErrorContains(t, err, "insufficient bytes to decode value")
    34  	assert.True(t, v == 0)
    35  	assert.Nil(t, r)
    36  
    37  	t1 := Encode([]byte("test"), 1)
    38  	r, v, err = Decode(t1)
    39  	assert.Nil(t, err)
    40  	assert.True(t, v == 1)
    41  	assert.True(t, bytes.Equal([]byte("test"), r))
    42  }