summaryrefslogtreecommitdiff
path: root/jni/ruby/test/io/wait/test_io_wait.rb
blob: 7729d45526d5d83b8ac4f5b9be4681ec6a695151 (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
# -*- coding: us-ascii -*-
require 'test/unit'
require 'timeout'
require 'socket'
begin
  require 'io/wait'
rescue LoadError
end

class TestIOWait < Test::Unit::TestCase

  def setup
    if /mswin|mingw/ =~ RUBY_PLATFORM
      @r, @w = Socket.pair(Socket::AF_INET, Socket::SOCK_STREAM, 0)
    else
      @r, @w = IO.pipe
    end
  end

  def teardown
    @r.close unless @r.closed?
    @w.close unless @w.closed?
  end

  def test_nread
    assert_equal 0, @r.nread
    @w.syswrite "."
    sleep 0.1
    assert_equal 1, @r.nread
  end

  def test_nread_buffered
    @w.syswrite ".\n!"
    assert_equal ".\n", @r.gets
    assert_equal 1, @r.nread
  end

  def test_ready?
    refute @r.ready?, "shouldn't ready, but ready"
    @w.syswrite "."
    sleep 0.1
    assert @r.ready?, "should ready, but not"
  end

  def test_buffered_ready?
    @w.syswrite ".\n!"
    assert_equal ".\n", @r.gets
    assert @r.ready?
  end

  def test_wait
    assert_nil @r.wait(0)
    @w.syswrite "."
    sleep 0.1
    assert_equal @r, @r.wait(0)
  end

  def test_wait_buffered
    @w.syswrite ".\n!"
    assert_equal ".\n", @r.gets
    assert_equal true, @r.wait(0)
  end

  def test_wait_forever
    th = Thread.new { sleep 0.01; @w.syswrite "." }
    assert_equal @r, @r.wait
  ensure
    th.join
  end

  def test_wait_eof
    th = Thread.new { sleep 0.01; @w.close }
    assert_nil @r.wait
  ensure
    th.join
  end

  def test_wait_writable
    assert_equal @w, @w.wait_writable
  end

  def test_wait_writable_timeout
    assert_equal @w, @w.wait_writable(0.01)
    written = fill_pipe
    assert_nil @w.wait_writable(0.01)
    @r.read(written)
    assert_equal @w, @w.wait_writable(0.01)
  end

  def test_wait_writable_EPIPE
    fill_pipe
    @r.close
    assert_equal @w, @w.wait_writable
  end

  def test_wait_writable_closed
    @w.close
    assert_raises(IOError) { @w.wait_writable }
  end

private

  def fill_pipe
    written = 0
    buf = " " * 4096
    begin
      written += @w.write_nonblock(buf)
    rescue Errno::EAGAIN, Errno::EWOULDBLOCK
      return written
    end while true
  end
end if IO.method_defined?(:wait)