From 149762e1c0e5b2f7d9d70ca9db01a400abe9a396 Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Mon, 27 Sep 2010 13:45:35 -0700
Subject: [PATCH] Merge additional backtracking tests from the master branch.

---
 .../tests/resolver/test_backtracking.py       | 72 +++++++++++++++++++
 1 file changed, 72 insertions(+)

diff --git a/pym/portage/tests/resolver/test_backtracking.py b/pym/portage/tests/resolver/test_backtracking.py
index 91a739aaf..41b6d50b6 100644
--- a/pym/portage/tests/resolver/test_backtracking.py
+++ b/pym/portage/tests/resolver/test_backtracking.py
@@ -30,6 +30,44 @@ class BacktrackingTestCase(TestCase):
 		finally:
 			playground.cleanup()
 
+
+	def testHittingTheBacktrackLimit(self):
+		ebuilds = {
+			"dev-libs/A-1": {},
+			"dev-libs/A-2": {},
+			"dev-libs/B-1": {},
+			"dev-libs/B-2": {},
+			"dev-libs/C-1": { "DEPEND": "dev-libs/A dev-libs/B" },
+			"dev-libs/D-1": { "DEPEND": "=dev-libs/A-1 =dev-libs/B-1" },
+			}
+
+		test_cases = (
+				ResolverPlaygroundTestCase(
+					["dev-libs/C", "dev-libs/D"],
+					all_permutations = True,
+					mergelist = ["dev-libs/A-1", "dev-libs/B-1", "dev-libs/C-1", "dev-libs/D-1"],
+					ignore_mergelist_order = True,
+					success = True),
+				#This one hits the backtrack limit. Be aware that this depends on the argument order.
+				ResolverPlaygroundTestCase(
+					["dev-libs/D", "dev-libs/C"],
+					options = { "--backtrack": 1 },
+					mergelist = ["dev-libs/A-1", "dev-libs/B-1", "dev-libs/A-2", "dev-libs/B-2", "dev-libs/C-1", "dev-libs/D-1"],
+					ignore_mergelist_order = True,
+					slot_collision_solutions = [],
+					success = False),
+			)
+
+		playground = ResolverPlayground(ebuilds=ebuilds)
+
+		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()
+
+
 	def testBacktrackingGoodVersionFirst(self):
 		"""
 		When backtracking due to slot conflicts, we masked the version that has been pulled
@@ -59,3 +97,37 @@ class BacktrackingTestCase(TestCase):
 				self.assertEqual(test_case.test_success, True, test_case.fail_msg)
 		finally:
 			playground.cleanup()
+
+	def testBacktrackWithoutUpdates(self):
+		"""
+		If --update is not given we might have to mask the old installed version later.
+		"""
+
+		ebuilds = {
+			"dev-libs/A-1": { "DEPEND": "dev-libs/Z" },
+			"dev-libs/B-1": { "DEPEND": ">=dev-libs/Z-2" },
+			"dev-libs/Z-1": { },
+			"dev-libs/Z-2": { },
+			}
+
+		installed = {
+			"dev-libs/Z-1": { "USE": "" },
+			}
+
+		test_cases = (
+				ResolverPlaygroundTestCase(
+					["dev-libs/B", "dev-libs/A"],
+					all_permutations = True,
+					mergelist = ["dev-libs/Z-2", "dev-libs/B-1", "dev-libs/A-1", ],
+					ignore_mergelist_order = True,
+					success = True),
+			)
+
+		playground = ResolverPlayground(ebuilds=ebuilds, installed=installed)
+
+		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()
-- 
2.26.2