summaryrefslogtreecommitdiff
path: root/test/test_pstore.rb
blob: 52b74f3775c08ca64455a9dd5358b8e656a28a28 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
# frozen_string_literal: true
require 'test/unit'
require 'pstore'
require 'tmpdir'

class PStoreTest < Test::Unit::TestCase
  def setup
    @pstore_file = File.join(Dir.tmpdir, "pstore.tmp.#{Process.pid}")
    @pstore = PStore.new(@pstore_file)
  end

  def teardown
    File.unlink(@pstore_file) rescue nil
  end

  def test_opening_new_file_in_readonly_mode_should_result_in_empty_values
    @pstore.transaction(true) do
      assert_nil @pstore[:foo]
      assert_nil @pstore[:bar]
    end
  end

  def test_opening_new_file_in_readwrite_mode_should_result_in_empty_values
    @pstore.transaction do
      assert_nil @pstore[:foo]
      assert_nil @pstore[:bar]
    end
  end

  def test_data_should_be_loaded_correctly_when_in_readonly_mode
    @pstore.transaction do
      @pstore[:foo] = "bar"
    end
    @pstore.transaction(true) do
      assert_equal "bar", @pstore[:foo]
    end
  end

  def test_data_should_be_loaded_correctly_when_in_readwrite_mode
    @pstore.transaction do
      @pstore[:foo] = "bar"
    end
    @pstore.transaction do
      assert_equal "bar", @pstore[:foo]
    end
  end

  def test_changes_after_commit_are_discarded
    @pstore.transaction do
      @pstore[:foo] = "bar"
      @pstore.commit
      @pstore[:foo] = "baz"
    end
    @pstore.transaction(true) do
      assert_equal "bar", @pstore[:foo]
    end
  end

  def test_changes_are_not_written_on_abort
    @pstore.transaction do
      @pstore[:foo] = "bar"
      @pstore.abort
    end
    @pstore.transaction(true) do
      assert_nil @pstore[:foo]
    end
  end

  def test_writing_inside_readonly_transaction_raises_error
    assert_raise(PStore::Error) do
      @pstore.transaction(true) do
        @pstore[:foo] = "bar"
      end
    end
  end

  def test_thread_safe
    q1 = Queue.new
    assert_raise(PStore::Error) do
      th = Thread.new do
        @pstore.transaction do
          @pstore[:foo] = "bar"
          q1.push true
          sleep
        end
      end
      begin
        q1.pop
        @pstore.transaction {}
      ensure
        th.kill
        th.join
      end
    end
    q2 = Queue.new
    begin
      pstore = PStore.new(second_file, true)
      cur = Thread.current
      th = Thread.new do
        pstore.transaction do
          pstore[:foo] = "bar"
          q1.push true
          q2.pop
          # wait for cur to enter a transaction
          sleep 0.1 until cur.stop?
        end
      end
      begin
        q1.pop
        q2.push true
        assert_equal("bar", pstore.transaction { pstore[:foo] })
      ensure
        th.join
      end
    end
  ensure
    File.unlink(second_file) rescue nil
  end

  def test_nested_transaction_raises_error
    assert_raise(PStore::Error) do
      @pstore.transaction { @pstore.transaction { } }
    end
    pstore = PStore.new(second_file, true)
    assert_raise(PStore::Error) do
      pstore.transaction { pstore.transaction { } }
    end
  ensure
    File.unlink(second_file) rescue nil
  end

  # Test that PStore's file operations do not blow up when default encodings are set
  def test_pstore_files_are_accessed_as_binary_files
    bug5311 = '[ruby-core:39503]'
    n = 128
    assert_in_out_err(["-Eutf-8:utf-8", "-rpstore", "-", @pstore_file], <<-SRC, [bug5311], [], bug5311, timeout: 30)
      @pstore = PStore.new(ARGV[0])
      (1..#{n}).each do |i|
        @pstore.transaction {@pstore["Key\#{i}"] = "value \#{i}"}
      end
      @pstore.transaction {@pstore["Bug5311"] = '#{bug5311}'}
      puts @pstore.transaction {@pstore["Bug5311"]}
    SRC
    assert_equal(bug5311, @pstore.transaction {@pstore["Bug5311"]}, bug5311)
  end

  def second_file
    File.join(Dir.tmpdir, "pstore.tmp2.#{Process.pid}")
  end
end