# Copyright 2010-2011 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

from portage.tests import TestCase
from portage.dep import paren_reduce
from portage.exception import InvalidDependString

class TestParenReduce(TestCase):

	def testParenReduce(self):

		test_cases = (
			( "A", ["A"]),
			( "( A )", ["A"]),
			( "|| ( A B )", [ "||", ["A", "B"] ]),
			( "|| ( A || ( B C ) )", [ "||", ["A", "||", ["B", "C"]]]),
			( "|| ( A || ( B C D ) )", [ "||", ["A", "||", ["B", "C", "D"]] ]),
			( "|| ( A || ( B || ( C D ) E ) )", [ "||", ["A", "||", ["B", "||", ["C", "D"], "E"]] ]),
			( "a? ( A )", ["a?", ["A"]]),
			
			( "( || ( ( ( A ) B ) ) )", ["A", "B"]),
			( "( || ( || ( ( A ) B ) ) )", [ "||", ["A", "B"] ]),
			( "|| ( A )", ["A"]),
			( "( || ( || ( || ( A ) foo? ( B ) ) ) )", [ "||", ["A", "foo?", ["B"] ]]),
			( "( || ( || ( bar? ( A ) || ( foo? ( B ) ) ) ) )", [ "||", ["bar?", ["A"], "foo?", ["B"] ]]),
			( "A || ( ) foo? ( ) B", ["A", "B"]),

			( "|| ( A ) || ( B )", ["A", "B"]),
			( "foo? ( A ) foo? ( B )", ["foo?", ["A"], "foo?", ["B"]]),

			( "|| ( ( A B ) C )", [ "||", [ ["A", "B"], "C"] ]),
			( "|| ( ( A B ) ( C ) )", [ "||", [ ["A", "B"], "C"] ]),
			# test USE dep defaults for bug #354003
			( ">=dev-lang/php-5.2[pcre(+)]", [ ">=dev-lang/php-5.2[pcre(+)]" ]),
		)
		
		test_cases_xfail = (
			"( A",
			"A )",

			"||( A B )",
			"|| (A B )",
			"|| ( A B)",
			"|| ( A B",
			"|| A B )",

			"|| A B",
			"|| ( A B ) )",
			"|| || B C",
			
			"|| ( A B || )",
			
			"a? A",
			
			( "( || ( || || ( A ) foo? ( B ) ) )"),
			( "( || ( || bar? ( A ) foo? ( B ) ) )"),
		)

		for dep_str, expected_result in test_cases:
			self.assertEqual(paren_reduce(dep_str), expected_result,
				"input: '%s' result: %s != %s" % (dep_str,
				paren_reduce(dep_str), expected_result))

		for dep_str in test_cases_xfail:
			self.assertRaisesMsg(dep_str,
				InvalidDependString, paren_reduce, dep_str)