github.com/zuoyebang/bitalostable@v1.0.1-0.20240229032404-e3b99a834294/internal/base/filenames_test.go (about)

     1  // Copyright 2012 The LevelDB-Go and Pebble Authors. All rights reserved. Use
     2  // of this source code is governed by a BSD-style license that can be found in
     3  // the LICENSE file.
     4  
     5  package base
     6  
     7  import (
     8  	"bytes"
     9  	"fmt"
    10  	"os"
    11  	"testing"
    12  
    13  	"github.com/stretchr/testify/require"
    14  	"github.com/zuoyebang/bitalostable/vfs"
    15  )
    16  
    17  func TestParseFilename(t *testing.T) {
    18  	testCases := map[string]bool{
    19  		"000000.log":             true,
    20  		"000000.log.zip":         false,
    21  		"000000..log":            false,
    22  		"a000000.log":            false,
    23  		"abcdef.log":             false,
    24  		"000001ldb":              false,
    25  		"000001.sst":             true,
    26  		"CURRENT":                true,
    27  		"CURRaNT":                false,
    28  		"LOCK":                   true,
    29  		"xLOCK":                  false,
    30  		"x.LOCK":                 false,
    31  		"MANIFEST":               false,
    32  		"MANIFEST123456":         false,
    33  		"MANIFEST-":              false,
    34  		"MANIFEST-123456":        true,
    35  		"MANIFEST-123456.doc":    false,
    36  		"OPTIONS":                false,
    37  		"OPTIONS123456":          false,
    38  		"OPTIONS-":               false,
    39  		"OPTIONS-123456":         true,
    40  		"OPTIONS-123456.doc":     false,
    41  		"CURRENT.123456":         false,
    42  		"CURRENT.dbtmp":          false,
    43  		"CURRENT.123456.dbtmp":   true,
    44  		"temporary.123456.dbtmp": true,
    45  	}
    46  	fs := vfs.NewMem()
    47  	for tc, want := range testCases {
    48  		_, _, got := ParseFilename(fs, fs.PathJoin("foo", tc))
    49  		if got != want {
    50  			t.Errorf("%q: got %v, want %v", tc, got, want)
    51  		}
    52  	}
    53  }
    54  
    55  func TestFilenameRoundTrip(t *testing.T) {
    56  	testCases := map[FileType]bool{
    57  		// CURRENT and LOCK files aren't numbered.
    58  		FileTypeCurrent: false,
    59  		FileTypeLock:    false,
    60  		// The remaining file types are numbered.
    61  		FileTypeLog:      true,
    62  		FileTypeManifest: true,
    63  		FileTypeTable:    true,
    64  		FileTypeOptions:  true,
    65  		FileTypeOldTemp:  true,
    66  		FileTypeTemp:     true,
    67  	}
    68  	fs := vfs.NewMem()
    69  	for fileType, numbered := range testCases {
    70  		fileNums := []FileNum{0}
    71  		if numbered {
    72  			fileNums = []FileNum{0, 1, 2, 3, 10, 42, 99, 1001}
    73  		}
    74  		for _, fileNum := range fileNums {
    75  			filename := MakeFilepath(fs, "foo", fileType, fileNum)
    76  			gotFT, gotFN, gotOK := ParseFilename(fs, filename)
    77  			if !gotOK {
    78  				t.Errorf("could not parse %q", filename)
    79  				continue
    80  			}
    81  			if gotFT != fileType || gotFN != fileNum {
    82  				t.Errorf("filename=%q: got %v, %v, want %v, %v", filename, gotFT, gotFN, fileType, fileNum)
    83  				continue
    84  			}
    85  		}
    86  	}
    87  }
    88  
    89  type bufferFataler struct {
    90  	buf bytes.Buffer
    91  }
    92  
    93  func (b *bufferFataler) Fatalf(msg string, args ...interface{}) {
    94  	fmt.Fprintf(&b.buf, msg, args...)
    95  }
    96  
    97  func TestMustExist(t *testing.T) {
    98  	err := os.ErrNotExist
    99  	fs := vfs.Default
   100  	var buf bufferFataler
   101  	filename := fs.PathJoin("..", "..", "testdata", "db-stage-4", "000000.sst")
   102  
   103  	MustExist(fs, filename, &buf, err)
   104  	require.Equal(t, `000000.sst:
   105  file does not exist
   106  directory contains 10 files, 3 unknown, 1 tables, 1 logs, 1 manifests`, buf.buf.String())
   107  }