require_relative '../../spec_helper' require "stringio" require_relative 'shared/read' describe "StringIO#read when passed length, buffer" do it_behaves_like :stringio_read, :read end describe "StringIO#read when passed [length]" do it_behaves_like :stringio_read_length, :read end describe "StringIO#read when passed no arguments" do it_behaves_like :stringio_read_no_arguments, :read it "returns an empty string if at EOF" do @io.read.should == "example" @io.read.should == "" end end describe "StringIO#read when passed nil" do it_behaves_like :stringio_read_nil, :read it "returns an empty string if at EOF" do @io.read(nil).should == "example" @io.read(nil).should == "" end end describe "StringIO#read when self is not readable" do it_behaves_like :stringio_read_not_readable, :read end describe "StringIO#read when passed [length]" do before :each do @io = StringIO.new("example") end it "returns nil when self's position is at the end" do @io.pos = 7 @io.read(10).should be_nil end it "returns an empty String when length is 0" do @io.read(0).should == "" end end describe "StringIO#read when passed length and a buffer" do before :each do @io = StringIO.new("abcdefghijklmnopqrstuvwxyz") end it "reads [length] characters into the buffer" do buf = "foo" result = @io.read(10, buf) buf.should == "abcdefghij" result.should equal(buf) end end