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require_relative '../../spec_helper'
describe "The DATA constant" do
it "exists when the main script contains __END__" do
ruby_exe(fixture(__FILE__, "data1.rb")).chomp.should == "true"
end
it "does not exist when the main script contains no __END__" do
ruby_exe("puts Object.const_defined?(:DATA)").chomp.should == 'false'
end
it "does not exist when an included file has a __END__" do
ruby_exe(fixture(__FILE__, "data2.rb")).chomp.should == "false"
end
it "does not change when an included files also has a __END__" do
ruby_exe(fixture(__FILE__, "data3.rb")).chomp.should == "data 3"
end
it "is included in an otherwise empty file" do
ap = fixture(__FILE__, "print_data.rb")
str = ruby_exe(fixture(__FILE__, "data_only.rb"), options: "-r#{ap}")
str.chomp.should == "data only"
end
it "returns a File object with the right offset" do
ruby_exe(fixture(__FILE__, "data_offset.rb")).should == "File\n121\n"
end
it "is set even if there is no data after __END__" do
ruby_exe(fixture(__FILE__, "empty_data.rb")).should == "31\n\"\"\n"
end
it "is set even if there is no newline after __END__" do
path = tmp("no_newline_data.rb")
code = File.binread(fixture(__FILE__, "empty_data.rb"))
touch(path, "wb") { |f| f.write code.chomp }
begin
ruby_exe(path).should == "30\n\"\"\n"
ensure
rm_r path
end
end
it "rewinds to the head of the main script" do
ruby_exe(fixture(__FILE__, "data5.rb")).chomp.should == "DATA.rewind"
end
end
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