require File.expand_path('../../../spec_helper', __FILE__) require File.expand_path('../fixtures/classes', __FILE__) describe "IO#puts" do before :each do @before_separator = $/ @name = tmp("io_puts.txt") @io = new_io @name ScratchPad.record "" def @io.write(str) ScratchPad << str end end after :each do ScratchPad.clear @io.close if @io rm_r @name $/ = @before_separator end it "writes just a newline when given no args" do @io.puts.should == nil ScratchPad.recorded.should == "\n" end it "writes just a newline when given just a newline" do lambda { $stdout.puts "\n" }.should output_to_fd("\n", STDOUT) end it "writes empty string with a newline when given nil as an arg" do @io.puts(nil).should == nil ScratchPad.recorded.should == "\n" end it "writes empty string with a newline when when given nil as multiple args" do @io.puts(nil, nil).should == nil ScratchPad.recorded.should == "\n\n" end it "calls :to_ary before writing non-string objects, regardless of it being implemented in the receiver" do object = mock('hola') object.should_receive(:method_missing).with(:to_ary) object.should_receive(:to_s).and_return("#") @io.puts(object).should == nil ScratchPad.recorded.should == "#\n" end it "calls :to_ary before writing non-string objects" do object = mock('hola') object.should_receive(:to_ary).and_return(["hola"]) @io.puts(object).should == nil ScratchPad.recorded.should == "hola\n" end it "calls :to_s before writing non-string objects that don't respond to :to_ary" do object = mock('hola') object.should_receive(:to_s).and_return("hola") @io.puts(object).should == nil ScratchPad.recorded.should == "hola\n" end it "returns general object info if :to_s does not return a string" do object = mock('hola') object.should_receive(:to_s).and_return(false) @io.puts(object).should == nil ScratchPad.recorded.should == object.inspect.split(" ")[0] + ">\n" end it "writes each arg if given several" do @io.puts(1, "two", 3).should == nil ScratchPad.recorded.should == "1\ntwo\n3\n" end it "flattens a nested array before writing it" do @io.puts([1, 2, [3]]).should == nil ScratchPad.recorded.should == "1\n2\n3\n" end it "writes nothing for an empty array" do x = [] @io.should_not_receive(:write) @io.puts(x).should == nil end it "writes [...] for a recursive array arg" do x = [] x << 2 << x @io.puts(x).should == nil ScratchPad.recorded.should == "2\n[...]\n" end it "writes a newline after objects that do not end in newlines" do @io.puts(5).should == nil ScratchPad.recorded.should == "5\n" end it "does not write a newline after objects that end in newlines" do @io.puts("5\n").should == nil ScratchPad.recorded.should == "5\n" end it "ignores the $/ separator global" do $/ = ":" @io.puts(5).should == nil ScratchPad.recorded.should == "5\n" end it "raises IOError on closed stream" do lambda { IOSpecs.closed_io.puts("stuff") }.should raise_error(IOError) end with_feature :encoding do it "writes crlf when IO is opened with newline: :crlf" do File.open(@name, 'wt', newline: :crlf) do |file| file.puts end File.binread(@name).should == "\r\n" end it "writes cr when IO is opened with newline: :cr" do File.open(@name, 'wt', newline: :cr) do |file| file.puts end File.binread(@name).should == "\r" end platform_is_not :windows do # https://bugs.ruby-lang.org/issues/12436 it "writes lf when IO is opened with newline: :lf" do File.open(@name, 'wt', newline: :lf) do |file| file.puts end File.binread(@name).should == "\n" end end end end