diff options
Diffstat (limited to 'spec/ruby/core/io/each_byte_spec.rb')
-rw-r--r-- | spec/ruby/core/io/each_byte_spec.rb | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/spec/ruby/core/io/each_byte_spec.rb b/spec/ruby/core/io/each_byte_spec.rb new file mode 100644 index 0000000000..0dc535a159 --- /dev/null +++ b/spec/ruby/core/io/each_byte_spec.rb @@ -0,0 +1,57 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "IO#each_byte" do + before :each do + ScratchPad.record [] + @io = IOSpecs.io_fixture "lines.txt" + end + + after :each do + @io.close if @io + end + + it "raises IOError on closed stream" do + lambda { IOSpecs.closed_io.each_byte {} }.should raise_error(IOError) + end + + it "yields each byte" do + count = 0 + @io.each_byte do |byte| + ScratchPad << byte + break if 4 < count += 1 + end + + ScratchPad.recorded.should == [86, 111, 105, 99, 105] + end + + describe "when no block is given" do + it "returns an Enumerator" do + enum = @io.each_byte + enum.should be_an_instance_of(Enumerator) + enum.first(5).should == [86, 111, 105, 99, 105] + end + + describe "returned Enumerator" do + describe "size" do + it "should return nil" do + @io.each_byte.size.should == nil + end + end + end + end +end + +describe "IO#each_byte" do + before :each do + @io = IOSpecs.io_fixture "empty.txt" + end + + after :each do + @io.close unless @io.closed? + end + + it "returns self on an empty stream" do + @io.each_byte { |b| }.should equal(@io) + end +end |