diff options
Diffstat (limited to 'spec/ruby/core/io/initialize_spec.rb')
-rw-r--r-- | spec/ruby/core/io/initialize_spec.rb | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/spec/ruby/core/io/initialize_spec.rb b/spec/ruby/core/io/initialize_spec.rb new file mode 100644 index 0000000000..4731257625 --- /dev/null +++ b/spec/ruby/core/io/initialize_spec.rb @@ -0,0 +1,53 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "IO#initialize" do + before :each do + @name = tmp("io_initialize.txt") + @io = new_io @name + @fd = @io.fileno + end + + after :each do + @io.close if @io + rm_r @name + end + + it "reassociates the IO instance with the new descriptor when passed a Fixnum" do + fd = new_fd @name, "r:utf-8" + @io.send :initialize, fd, 'r' + @io.fileno.should == fd + # initialize has closed the old descriptor + lambda { IO.for_fd(@fd).close }.should raise_error(Errno::EBADF) + end + + it "calls #to_int to coerce the object passed as an fd" do + obj = mock('fileno') + fd = new_fd @name, "r:utf-8" + obj.should_receive(:to_int).and_return(fd) + @io.send :initialize, obj, 'r' + @io.fileno.should == fd + # initialize has closed the old descriptor + lambda { IO.for_fd(@fd).close }.should raise_error(Errno::EBADF) + end + + it "raises a TypeError when passed an IO" do + lambda { @io.send :initialize, STDOUT, 'w' }.should raise_error(TypeError) + end + + it "raises a TypeError when passed nil" do + lambda { @io.send :initialize, nil, 'w' }.should raise_error(TypeError) + end + + it "raises a TypeError when passed a String" do + lambda { @io.send :initialize, "4", 'w' }.should raise_error(TypeError) + end + + it "raises IOError on closed stream" do + lambda { @io.send :initialize, IOSpecs.closed_io.fileno }.should raise_error(IOError) + end + + it "raises an Errno::EBADF when given an invalid file descriptor" do + lambda { @io.send :initialize, -1, 'w' }.should raise_error(Errno::EBADF) + end +end |