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# Copyright 2011-2015 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

import tempfile

import portage
from portage import os
from portage import shutil
from portage.dbapi.virtual import fakedbapi
from portage.package.ebuild.config import config
from portage.tests import TestCase

class TestFakedbapi(TestCase):

	def testFakedbapi(self):
		packages = (
			("sys-apps/portage-2.1.10", {
				"EAPI"         : "2",
				"IUSE"         : "ipc doc",
				"repository"   : "gentoo",
				"SLOT"         : "0",
				"USE"          : "ipc missing-iuse",
			}),
			("virtual/package-manager-0", {
				"EAPI"         : "0",
				"repository"   : "gentoo",
				"SLOT"         : "0",
			}),
		)

		match_tests = (
			("sys-apps/portage:0[ipc]",             ["sys-apps/portage-2.1.10"]),
			("sys-apps/portage:0[-ipc]",            []),
			("sys-apps/portage:0[doc]",             []),
			("sys-apps/portage:0[-doc]",            ["sys-apps/portage-2.1.10"]),
			("sys-apps/portage:0",                  ["sys-apps/portage-2.1.10"]),
			("sys-apps/portage:0[missing-iuse]",    []),
			("sys-apps/portage:0[-missing-iuse]",   []),
			("sys-apps/portage:0::gentoo[ipc]",     ["sys-apps/portage-2.1.10"]),
			("sys-apps/portage:0::multilib[ipc]",   []),
			("virtual/package-manager",             ["virtual/package-manager-0"]),
		)

		tempdir = tempfile.mkdtemp()
		try:
			test_repo = os.path.join(tempdir, "var", "repositories", "test_repo")
			os.makedirs(os.path.join(test_repo, "profiles"))
			with open(os.path.join(test_repo, "profiles", "repo_name"), "w") as f:
				f.write("test_repo")
			env = {
				"PORTAGE_REPOSITORIES": "[DEFAULT]\nmain-repo = test_repo\n[test_repo]\nlocation = %s" % test_repo
			}

			# Tests may override portage.const.EPREFIX in order to
			# simulate a prefix installation. It's reasonable to do
			# this because tests should be self-contained such that
			# the "real" value of portage.const.EPREFIX is entirely
			# irrelevant (see bug #492932).
			portage.const.EPREFIX = tempdir

			fakedb = fakedbapi(settings=config(config_profile_path="",
				env=env, eprefix=tempdir))
			for cpv, metadata in packages:
				fakedb.cpv_inject(cpv, metadata=metadata)

			for atom, expected_result in match_tests:
				result = fakedb.match(atom)
				self.assertEqual(fakedb.match(atom), expected_result,
					"fakedb.match('%s') = %s != %s" %
					(atom, result, expected_result))
		finally:
			shutil.rmtree(tempdir)