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
|
require_relative '../../spec_helper'
require_relative 'fixtures/classes'
require_relative 'shared/write'
# See https://bugs.ruby-lang.org/issues/5954#note-5
platform_is_not :windows do
describe "IO#write_nonblock on a file" do
before :each do
@filename = tmp("IO_syswrite_file") + $$.to_s
File.open(@filename, "w") do |file|
file.write_nonblock("012345678901234567890123456789")
end
@file = File.open(@filename, "r+")
@readonly_file = File.open(@filename)
end
after :each do
@file.close if @file
@readonly_file.close if @readonly_file
rm_r @filename
end
it "writes all of the string's bytes but does not buffer them" do
written = @file.write_nonblock("abcde")
written.should == 5
File.open(@filename) do |file|
file.sysread(10).should == "abcde56789"
file.seek(0)
@file.fsync
file.sysread(10).should == "abcde56789"
end
end
it "does not modify the passed argument" do
File.open(@filename, "w") do |f|
f.set_encoding(Encoding::IBM437)
# A character whose codepoint differs between UTF-8 and IBM437
f.write_nonblock("ƒ".freeze)
end
File.binread(@filename).bytes.should == [198, 146]
end
it "checks if the file is writable if writing zero bytes" do
-> {
@readonly_file.write_nonblock("")
}.should raise_error(IOError)
end
end
describe "IO#write_nonblock" do
it_behaves_like :io_write, :write_nonblock
it_behaves_like :io_write_no_transcode, :write_nonblock
end
end
describe 'IO#write_nonblock' do
before do
@read, @write = IO.pipe
end
after do
@read.close
@write.close
end
it "raises an exception extending IO::WaitWritable when the write would block" do
-> {
loop { @write.write_nonblock('a' * 10_000) }
}.should raise_error(IO::WaitWritable) { |e|
platform_is_not :windows do
e.should be_kind_of(Errno::EAGAIN)
end
platform_is :windows do
e.should be_kind_of(Errno::EWOULDBLOCK)
end
}
end
context "when exception option is set to false" do
it "returns :wait_writable when the operation would block" do
loop {
break if @write.write_nonblock("a" * 10_000, exception: false) == :wait_writable
}
@write.write_nonblock("a" * 10_000, exception: false).should == :wait_writable
end
end
platform_is_not :windows do
it 'sets the IO in nonblock mode' do
require 'io/nonblock'
@write.write_nonblock('a')
@write.should.nonblock?
end
end
end
|
