require File.expand_path('../../../spec_helper', __FILE__) require File.expand_path('../fixtures/classes', __FILE__) describe "StringIO#readlines when passed [separator]" do before :each do @io = StringIO.new("this>is>an>example") end it "returns an Array containing lines based on the passed separator" do @io.readlines(">").should == ["this>", "is>", "an>", "example"] end it "updates self's position based on the number of read bytes" do @io.readlines(">") @io.pos.should eql(18) end it "updates self's lineno based on the number of read lines" do @io.readlines(">") @io.lineno.should eql(4) end it "does not change $_" do $_ = "test" @io.readlines(">") $_.should == "test" end it "returns an Array containing all paragraphs when the passed separator is an empty String" do io = StringIO.new("this is\n\nan example") io.readlines("").should == ["this is\n\n", "an example"] end it "returns the remaining content as one line starting at the current position when passed nil" do io = StringIO.new("this is\n\nan example") io.pos = 5 io.readlines(nil).should == ["is\n\nan example"] end it "tries to convert the passed separator to a String using #to_str" do obj = mock('to_str') obj.stub!(:to_str).and_return(">") @io.readlines(obj).should == ["this>", "is>", "an>", "example"] end end describe "StringIO#readlines when passed no argument" do before :each do @io = StringIO.new("this is\nan example\nfor StringIO#readlines") end it "returns an Array containing lines based on $/" do begin old_sep, $/ = $/, " " @io.readlines.should == ["this ", "is\nan ", "example\nfor ", "StringIO#readlines"] ensure $/ = old_sep end end it "updates self's position based on the number of read bytes" do @io.readlines @io.pos.should eql(41) end it "updates self's lineno based on the number of read lines" do @io.readlines @io.lineno.should eql(3) end it "does not change $_" do $_ = "test" @io.readlines(">") $_.should == "test" end it "returns an empty Array when self is at the end" do @io.pos = 41 @io.readlines.should == [] end end describe "StringIO#readlines when in write-only mode" do it "raises an IOError" do io = StringIO.new("xyz", "w") lambda { io.readlines }.should raise_error(IOError) io = StringIO.new("xyz") io.close_read lambda { io.readlines }.should raise_error(IOError) end end ruby_version_is "2.4" do describe "StringIO#readlines when passed [chomp]" do it "returns the data read without a trailing newline character" do io = StringIO.new("this>is\nan>example\r\n") io.readlines(chomp: true).should == ["this>is", "an>example"] end end end