require_relative '../../spec_helper' require_relative 'fixtures/classes' describe "StringIO#string" do it "returns the underlying string" do io = StringIO.new(str = "hello") io.string.should equal(str) end end describe "StringIO#string=" do before :each do @io = StringIO.new("example\nstring") end it "returns the passed String" do str = "test" (@io.string = str).should equal(str) end it "changes the underlying string" do str = "hello" @io.string = str @io.string.should equal(str) end it "resets the position" do @io.pos = 1 @io.string = "other" @io.pos.should eql(0) end it "resets the line number" do @io.lineno = 1 @io.string = "other" @io.lineno.should eql(0) end it "tries to convert the passed Object to a String using #to_str" do obj = mock("to_str") obj.should_receive(:to_str).and_return("to_str") @io.string = obj @io.string.should == "to_str" end it "raises a TypeError when the passed Object can't be converted to an Integer" do -> { @io.seek(Object.new) }.should raise_error(TypeError) end end