diff options
Diffstat (limited to 'spec/ruby/core/io/dup_spec.rb')
-rw-r--r-- | spec/ruby/core/io/dup_spec.rb | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/spec/ruby/core/io/dup_spec.rb b/spec/ruby/core/io/dup_spec.rb new file mode 100644 index 0000000000..a90b04aa5d --- /dev/null +++ b/spec/ruby/core/io/dup_spec.rb @@ -0,0 +1,69 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "IO#dup" do + before :each do + @file = tmp("rubinius_spec_io_dup_#{$$}_#{Time.now.to_f}") + @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 + lambda { @f.gets }.should_not raise_error(Exception) + + @i.closed?.should == true + @f.closed?.should == false + end + + it "allows closing the original IO without affecting the new one" do + @f.close + lambda { @i.gets }.should_not raise_error(Exception) + + @i.closed?.should == false + @f.closed?.should == true + end + + it "raises IOError on closed stream" do + lambda { IOSpecs.closed_io.dup }.should raise_error(IOError) + end +end |