# This file is part of NIT ( http://www.nitlanguage.org ).
#
# This file is free software, which comes along with NIT.  This software is
# distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
# without  even  the implied warranty of  MERCHANTABILITY or  FITNESS FOR A
# PARTICULAR PURPOSE.  You can modify it is you want,  provided this header
# is kept unaltered, and a notification of the changes is added.
# You  are  allowed  to  redistribute it and sell it, alone or is a part of
# another product.

module test_abstract_text is test_suite

import test_suite
import text
intrude import ropes

class TestText
	super TestSuite

	private var factories: Collection[TextFactory] = [
		new ConcatFactory,
		new RopeBufferFactory,
		new FlatBufferFactory
	: TextFactory]

	fun test_escape_to_c do
		for f in factories do
			assert f.create("abAB12<>&").escape_to_c       == "abAB12<>&"
			assert f.create("\n\"'\\").escape_to_c         == "\\n\\\"\\'\\\\"
			assert f.create("allo???!").escape_to_c        == "allo??\\?!"
			assert f.create("??=??/??'??(??)").escape_to_c == "?\\?=?\\?/??\\'?\\?(?\\?)"
			assert f.create("??!??<??>??-").escape_to_c    == "?\\?!?\\?<?\\?>?\\?-"
		end
	end
end

# A factory that creates instances of a particular implementation of `Text`
interface TextFactory

	# Create a `Text` instance from the specified string
	fun create(s: String): Text is abstract
end


class ConcatFactory
	super TextFactory

	redef fun create(s) do return new Concat("", s)
end

class RopeBufferFactory
	super TextFactory

	redef fun create(s) do return new RopeBuffer.from(s)
end

class FlatBufferFactory
	super TextFactory

	redef fun create(s) do return new FlatBuffer.from(s)
end