github.com/insionng/yougam@v0.0.0-20170714101924-2bc18d833463/libraries/syndtr/goleveldb/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  	"testing"
    12  )
    13  
    14  func TestMemStorage(t *testing.T) {
    15  	m := NewMemStorage()
    16  
    17  	l, err := m.Lock()
    18  	if err != nil {
    19  		t.Fatal("storage lock failed(1): ", err)
    20  	}
    21  	_, err = m.Lock()
    22  	if err == nil {
    23  		t.Fatal("expect error for second storage lock attempt")
    24  	} else {
    25  		t.Logf("storage lock got error: %s (expected)", err)
    26  	}
    27  	l.Release()
    28  	_, err = m.Lock()
    29  	if err != nil {
    30  		t.Fatal("storage lock failed(2): ", err)
    31  	}
    32  
    33  	w, err := m.Create(FileDesc{TypeTable, 1})
    34  	if err != nil {
    35  		t.Fatal("Storage.Create: ", err)
    36  	}
    37  	w.Write([]byte("abc"))
    38  	w.Close()
    39  	if fds, _ := m.List(TypeAll); len(fds) != 1 {
    40  		t.Fatal("invalid GetFiles len")
    41  	}
    42  	buf := new(bytes.Buffer)
    43  	r, err := m.Open(FileDesc{TypeTable, 1})
    44  	if err != nil {
    45  		t.Fatal("Open: got error: ", err)
    46  	}
    47  	buf.ReadFrom(r)
    48  	r.Close()
    49  	if got := buf.String(); got != "abc" {
    50  		t.Fatalf("Read: invalid value, want=abc got=%s", got)
    51  	}
    52  	if _, err := m.Open(FileDesc{TypeTable, 1}); err != nil {
    53  		t.Fatal("Open: got error: ", err)
    54  	}
    55  	if _, err := m.Open(FileDesc{TypeTable, 1}); err == nil {
    56  		t.Fatal("expecting error")
    57  	}
    58  	m.Remove(FileDesc{TypeTable, 1})
    59  	if fds, _ := m.List(TypeAll); len(fds) != 0 {
    60  		t.Fatal("invalid GetFiles len", len(fds))
    61  	}
    62  	if _, err := m.Open(FileDesc{TypeTable, 1}); err == nil {
    63  		t.Fatal("expecting error")
    64  	}
    65  }