github.com/df-mc/goleveldb@v1.1.9/leveldb/storage/mem_storage_test.go (about)

     1  // Copyright (c) 2013, Suryandaru Triandana <syndtr@gmail.com>
     2  // All rights reserved.
     3  //
     4  // Use of this source code is governed by a BSD-style license that can be
     5  // found in the LICENSE file.
     6  
     7  package storage
     8  
     9  import (
    10  	"bytes"
    11  	"fmt"
    12  	"testing"
    13  )
    14  
    15  func TestMemStorage(t *testing.T) {
    16  	m := NewMemStorage()
    17  
    18  	l, err := m.Lock()
    19  	if err != nil {
    20  		t.Fatal("storage lock failed(1): ", err)
    21  	}
    22  	_, err = m.Lock()
    23  	if err == nil {
    24  		t.Fatal("expect error for second storage lock attempt")
    25  	} else {
    26  		t.Logf("storage lock got error: %s (expected)", err)
    27  	}
    28  	l.Unlock()
    29  	_, err = m.Lock()
    30  	if err != nil {
    31  		t.Fatal("storage lock failed(2): ", err)
    32  	}
    33  
    34  	w, err := m.Create(FileDesc{TypeTable, 1})
    35  	if err != nil {
    36  		t.Fatal("Storage.Create: ", err)
    37  	}
    38  	w.Write([]byte("abc"))
    39  	w.Close()
    40  	if fds, _ := m.List(TypeAll); len(fds) != 1 {
    41  		t.Fatal("invalid GetFiles len")
    42  	}
    43  	buf := new(bytes.Buffer)
    44  	r, err := m.Open(FileDesc{TypeTable, 1})
    45  	if err != nil {
    46  		t.Fatal("Open: got error: ", err)
    47  	}
    48  	buf.ReadFrom(r)
    49  	r.Close()
    50  	if got := buf.String(); got != "abc" {
    51  		t.Fatalf("Read: invalid value, want=abc got=%s", got)
    52  	}
    53  	if _, err := m.Open(FileDesc{TypeTable, 1}); err != nil {
    54  		t.Fatal("Open: got error: ", err)
    55  	}
    56  	if _, err := m.Open(FileDesc{TypeTable, 1}); err == nil {
    57  		t.Fatal("expecting error")
    58  	}
    59  	m.Remove(FileDesc{TypeTable, 1})
    60  	if fds, _ := m.List(TypeAll); len(fds) != 0 {
    61  		t.Fatal("invalid GetFiles len", len(fds))
    62  	}
    63  	if _, err := m.Open(FileDesc{TypeTable, 1}); err == nil {
    64  		t.Fatal("expecting error")
    65  	}
    66  }
    67  
    68  func TestMemStorageRename(t *testing.T) {
    69  	fd1 := FileDesc{Type: TypeTable, Num: 1}
    70  	fd2 := FileDesc{Type: TypeTable, Num: 2}
    71  
    72  	m := NewMemStorage()
    73  	w, err := m.Create(fd1)
    74  	if err != nil {
    75  		t.Fatalf("Storage.Create: %v", err)
    76  	}
    77  
    78  	fmt.Fprintf(w, "abc")
    79  	w.Close()
    80  
    81  	rd, err := m.Open(fd1)
    82  	if err != nil {
    83  		t.Fatalf("Storage.Open(%v): %v", fd1, err)
    84  	}
    85  	rd.Close()
    86  
    87  	fds, err := m.List(TypeAll)
    88  	if err != nil {
    89  		t.Fatalf("Storage.List: %v", err)
    90  	}
    91  	for _, fd := range fds {
    92  		if !FileDescOk(fd) {
    93  			t.Errorf("Storage.List -> FileDescOk(%q)", fd)
    94  		}
    95  	}
    96  
    97  	err = m.Rename(fd1, fd2)
    98  	if err != nil {
    99  		t.Fatalf("Storage.Rename: %v", err)
   100  	}
   101  
   102  	rd, err = m.Open(fd2)
   103  	if err != nil {
   104  		t.Fatalf("Storage.Open(%v): %v", fd2, err)
   105  	}
   106  	rd.Close()
   107  
   108  	fds, err = m.List(TypeAll)
   109  	if err != nil {
   110  		t.Fatalf("Storage.List: %v", err)
   111  	}
   112  	for _, fd := range fds {
   113  		if !FileDescOk(fd) {
   114  			t.Errorf("Storage.List -> FileDescOk(%q)", fd)
   115  		}
   116  	}
   117  }