Make test_less_than test reverse

1 files changed, 18 insertions, 9 deletions

diff --git a/exts/pip_find_deps_tests.py b/exts/pip_find_deps_tests.py
index 83fe4b1..b838714 100755
--- a/exts/pip_find_deps_tests.py
+++ b/exts/pip_find_deps_tests.py
@@ -46,19 +46,28 @@ class ConflictDetectionTests(unittest.TestCase):
                                          ('==', parse_version('0.2')))])
 
     def test_less_than(self):
-        # ('==', '0.1') conflicts with ('<', 0.1)
-        requirements = parse_requirements(['a == 0.1', 'a < 0.1'])
-        # TODO: and the reverse
+        def run(requirements, expected_conflicts):
+            deps = pip_find_deps.resolve_version_constraints(requirements)
 
-        deps = pip_find_deps.resolve_version_constraints(requirements)
+            self.assertEqual(len(deps), 1)
 
-        self.assertEqual(len(deps), 1)
+            _, dep = deps.popitem()
 
-        _, dep = deps.popitem()
+            self.assertEqual(len(dep.conflicts), 1)
+            self.assertEqual(dep.conflicts, expected_conflicts)
 
-        self.assertEqual(len(dep.conflicts), 1)
-        self.assertEqual(dep.conflicts, [(('==', parse_version('0.1')),
-                                         ('<', parse_version('0.1')))])
+        def reverse(xs):
+            return xs[::-1]
+
+        requirements = list(parse_requirements(['a == 0.1', 'a < 0.1']))
+        expected_conflicts = [(('==', parse_version('0.1')),
+                              ('<', parse_version('0.1')))]
+
+        # ('==', '0.1') conflicts with ('<', 0.1)
+        run(requirements, expected_conflicts)
+
+        # ('<', 0.1) conflicts with ('==', '0.1')
+        run(reverse(requirements), reverse(expected_conflicts))
 
 
 if __name__ == '__main__':