# Copyright 2014 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

from portage.tests import TestCase
from portage.tests.resolver.ResolverPlayground import ResolverPlayground, ResolverPlaygroundTestCase

class UseFlagsTestCase(TestCase):

	def testUseFlags(self):
		ebuilds = {
			"dev-libs/A-1": { "IUSE": "X", },
			"dev-libs/B-1": { "IUSE": "X Y", },
			"dev-libs/C-1": { "IUSE": "abi_x86_32", "EAPI": "7" },
			"dev-libs/D-1": { "IUSE": "abi_x86_32", "EAPI": "7", "RDEPEND": "dev-libs/C[abi_x86_32?]" },
			}

		installed = {
			"dev-libs/A-1": { "IUSE": "X", },
			"dev-libs/B-1": { "IUSE": "X", },
			"dev-libs/C-1": { "IUSE": "abi_x86_32", "USE": "abi_x86_32", "EAPI": "7" },
			"dev-libs/D-1": { "IUSE": "abi_x86_32", "USE": "abi_x86_32", "EAPI": "7", "RDEPEND": "dev-libs/C[abi_x86_32]" },
			}

		binpkgs = installed

		user_config = {
			"package.use": (
				"dev-libs/A X",
				"dev-libs/D abi_x86_32",
			),
			"use.force": ( "Y", ),
		}

		test_cases = (
			#default: don't reinstall on use flag change
			ResolverPlaygroundTestCase(
				["dev-libs/A"],
				options = {"--selective": True, "--usepkg": True},
				success = True,
				mergelist = []),

			#default: respect use flags for binpkgs
			ResolverPlaygroundTestCase(
				["dev-libs/A"],
				options = {"--usepkg": True},
				success = True,
				mergelist = ["dev-libs/A-1"]),

			# For bug 773469, we wanted --binpkg-respect-use=y to trigger a
			# slot collision. Instead, a combination of default --autounmask-use
			# combined with --autounmask-backtrack=y from EMERGE_DEFAULT_OPTS
			# triggered this behavior which appeared confusingly similar to
			#--binpkg-respect-use=n behavior.
			#ResolverPlaygroundTestCase(
			#	["dev-libs/C", "dev-libs/D"],
			#	options={"--usepkg": True, "--binpkg-respect-use": "y", "--autounmask-backtrack": "y"},
			#	success=True,
			#	use_changes={"dev-libs/C-1": {"abi_x86_32": True}},
			#	mergelist=["[binary]dev-libs/C-1", "[binary]dev-libs/D-1"],
			ResolverPlaygroundTestCase(
				["dev-libs/C", "dev-libs/D"],
				options={"--usepkg": True, "--binpkg-respect-use": "y", "--autounmask-backtrack": "y"},
				success=False,
				slot_collision_solutions=[{"dev-libs/C-1": {"abi_x86_32": True}}],
				mergelist=["dev-libs/C-1", "[binary]dev-libs/D-1"],
			),

			#--binpkg-respect-use=n: use binpkgs with different use flags
			ResolverPlaygroundTestCase(
				["dev-libs/A"],
				options = {"--binpkg-respect-use": "n", "--usepkg": True},
				success = True,
				mergelist = ["[binary]dev-libs/A-1"]),

			#--reinstall=changed-use: reinstall if use flag changed
			ResolverPlaygroundTestCase(
				["dev-libs/A"],
				options = {"--reinstall": "changed-use", "--usepkg": True},
				success = True,
				mergelist = ["dev-libs/A-1"]),

			#--reinstall=changed-use: don't reinstall on new use flag
			ResolverPlaygroundTestCase(
				["dev-libs/B"],
				options = {"--reinstall": "changed-use", "--usepkg": True},
				success = True,
				mergelist = []),

			#--newuse: reinstall on new use flag
			ResolverPlaygroundTestCase(
				["dev-libs/B"],
				options = {"--newuse": True, "--usepkg": True},
				success = True,
				mergelist = ["dev-libs/B-1"]),
			)

		playground = ResolverPlayground(ebuilds=ebuilds,
			binpkgs=binpkgs, installed=installed, user_config=user_config)
		try:
			for test_case in test_cases:
				playground.run_TestCase(test_case)
				self.assertEqual(test_case.test_success, True, test_case.fail_msg)
		finally:
			playground.cleanup()