github.com/zuoyebang/bitalosdb@v1.1.1-0.20240516111551-79a8c4d8ce20/bithash/table_test.go (about)

     1  // Copyright 2021 The Bitalosdb author(hustxrb@163.com) and other contributors.
     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 bithash
    16  
    17  import (
    18  	"fmt"
    19  	"testing"
    20  
    21  	"github.com/zuoyebang/bitalosdb/internal/vfs"
    22  )
    23  
    24  var testMemFs = vfs.NewMem()
    25  var testFs = vfs.Default
    26  
    27  func TestFooter(t *testing.T) {
    28  	f0, err := testMemFs.Create("filename")
    29  	if err != nil {
    30  		panic(err)
    31  	}
    32  	var ft = footer{
    33  		metaBH: BlockHandle{5, 4},
    34  	}
    35  	buf := make([]byte, bithashFooterLen)
    36  	data := ft.encode(buf)
    37  	fmt.Println("write data:", data)
    38  	f0.Write([]byte("hello"))
    39  	n, err := f0.Write(data)
    40  	if err != nil {
    41  		panic(err)
    42  	}
    43  	if err := f0.Sync(); err != nil {
    44  		panic(err)
    45  	}
    46  	fmt.Println("n:", n)
    47  	if err := f0.Close(); err != nil {
    48  		panic(err)
    49  	}
    50  	f1, err := testMemFs.Open("filename")
    51  	if err != nil {
    52  		panic(err)
    53  	}
    54  	ftt, err := readTableFooter(f1)
    55  	if err != nil {
    56  		panic(err)
    57  	}
    58  	fmt.Printf("read footer:%+v", ftt)
    59  }
    60  
    61  func TestFooterEncodeDecode(t *testing.T) {
    62  	var ft = footer{
    63  		metaBH: BlockHandle{1, 2},
    64  	}
    65  	buf := make([]byte, bithashFooterLen)
    66  	newbuf := ft.encode(buf)
    67  	fmt.Println("encode:", newbuf)
    68  	f, err := decodeTableFooter(newbuf, bithashFooterLen)
    69  	if err != nil {
    70  		panic(err)
    71  	}
    72  	fmt.Printf("decode result:%+v", f)
    73  }