require_relative '../../spec_helper' require "stringio" require_relative 'shared/read' describe "StringIO#sysread when passed length, buffer" do it_behaves_like :stringio_read, :sysread end describe "StringIO#sysread when passed [length]" do it_behaves_like :stringio_read_length, :sysread end describe "StringIO#sysread when passed no arguments" do it_behaves_like :stringio_read_no_arguments, :sysread it "returns an empty String if at EOF" do @io.sysread.should == "example" @io.sysread.should == "" end end describe "StringIO#sysread when self is not readable" do it_behaves_like :stringio_read_not_readable, :sysread end describe "StringIO#sysread when passed nil" do it_behaves_like :stringio_read_nil, :sysread it "returns an empty String if at EOF" do @io.sysread(nil).should == "example" @io.sysread(nil).should == "" end end describe "StringIO#sysread when passed [length]" do before :each do @io = StringIO.new("example") end it "raises an EOFError when self's position is at the end" do @io.pos = 7 -> { @io.sysread(10) }.should raise_error(EOFError) end it "returns an empty String when length is 0" do @io.sysread(0).should == "" end end