require_relative '../../spec_helper' require_relative 'fixtures/classes' describe "IO#eof?" do before :each do @name = tmp("empty.txt") touch @name end after :each do rm_r @name end it "returns true on an empty stream that has just been opened" do File.open(@name) { |empty| empty.eof?.should == true } end it "raises IOError on stream not opened for reading" do lambda do File.open(@name, "w") { |f| f.eof? } end.should raise_error(IOError) end end describe "IO#eof?" do before :each do @name = fixture __FILE__, "lines.txt" @io = IOSpecs.io_fixture "lines.txt" end after :each do @io.close if @io && !@io.closed? end it "returns false when not at end of file" do @io.read 1 @io.eof?.should == false end it "returns true after reading with read with no parameters" do @io.read() @io.eof?.should == true end it "returns true after reading with read" do @io.read(File.size(@name)) @io.eof?.should == true end it "returns true after reading with sysread" do @io.sysread(File.size(@name)) @io.eof?.should == true end it "returns true after reading with readlines" do @io.readlines @io.eof?.should == true end it "returns false on just opened non-empty stream" do @io.eof?.should == false end it "does not consume the data from the stream" do @io.eof?.should == false @io.getc.should == 'V' end it "raises IOError on closed stream" do lambda { IOSpecs.closed_io.eof? }.should raise_error(IOError) end it "raises IOError on stream closed for reading by close_read" do @io.close_read lambda { @io.eof? }.should raise_error(IOError) end it "returns true on one-byte stream after single-byte read" do File.open(File.dirname(__FILE__) + '/fixtures/one_byte.txt') { |one_byte| one_byte.read(1) one_byte.eof?.should == true } end end describe "IO#eof?" do after :each do @r.close if @r && !@r.closed? @w.close if @w && !@w.closed? end it "returns true on receiving side of Pipe when writing side is closed" do @r, @w = IO.pipe @w.close @r.eof?.should == true end it "returns false on receiving side of Pipe when writing side wrote some data" do @r, @w = IO.pipe @w.puts "hello" @r.eof?.should == false @w.close @r.eof?.should == false @r.read @r.eof?.should == true end end