mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
87 lines
1.7 KiB
Ruby
87 lines
1.7 KiB
Ruby
require_relative '../../spec_helper'
|
|
require_relative 'fixtures/classes'
|
|
|
|
describe "IO#dup" do
|
|
before :each do
|
|
@file = tmp("spec_io_dup")
|
|
@f = File.open @file, 'w+'
|
|
@i = @f.dup
|
|
|
|
@f.sync = true
|
|
@i.sync = true
|
|
end
|
|
|
|
after :each do
|
|
@i.close if @i && !@i.closed?
|
|
@f.close if @f && !@f.closed?
|
|
rm_r @file
|
|
end
|
|
|
|
it "returns a new IO instance" do
|
|
@i.class.should == @f.class
|
|
end
|
|
|
|
it "sets a new descriptor on the returned object" do
|
|
@i.fileno.should_not == @f.fileno
|
|
end
|
|
|
|
quarantine! do # This does not appear to be consistent across platforms
|
|
it "shares the original stream between the two IOs" do
|
|
start = @f.pos
|
|
@i.pos.should == start
|
|
|
|
s = "Hello, wo.. wait, where am I?\n"
|
|
s2 = "<evil voice> Muhahahaa!"
|
|
|
|
@f.write s
|
|
@i.pos.should == @f.pos
|
|
|
|
@i.rewind
|
|
@i.gets.should == s
|
|
|
|
@i.rewind
|
|
@i.write s2
|
|
|
|
@f.rewind
|
|
@f.gets.should == "#{s2}\n"
|
|
end
|
|
end
|
|
|
|
it "allows closing the new IO without affecting the original" do
|
|
@i.close
|
|
-> { @f.gets }.should_not raise_error(Exception)
|
|
|
|
@i.should.closed?
|
|
@f.should_not.closed?
|
|
end
|
|
|
|
it "allows closing the original IO without affecting the new one" do
|
|
@f.close
|
|
-> { @i.gets }.should_not raise_error(Exception)
|
|
|
|
@i.should_not.closed?
|
|
@f.should.closed?
|
|
end
|
|
|
|
it "raises IOError on closed stream" do
|
|
-> { IOSpecs.closed_io.dup }.should raise_error(IOError)
|
|
end
|
|
|
|
it "always sets the close-on-exec flag for the new IO object" do
|
|
@f.close_on_exec = true
|
|
dup = @f.dup
|
|
begin
|
|
dup.should.close_on_exec?
|
|
ensure
|
|
dup.close
|
|
end
|
|
|
|
@f.close_on_exec = false
|
|
dup = @f.dup
|
|
begin
|
|
dup.should.close_on_exec?
|
|
ensure
|
|
dup.close
|
|
end
|
|
end
|
|
end
|