[Checkins] SVN: BTrees/branches/pure_python/ Coverage for BTrees._base.intersection.

[Tres Seaver]

Log message for revision 128499:
  Coverage for BTrees._base.intersection.

Changed:
  _U  BTrees/branches/pure_python/
  U   BTrees/branches/pure_python/BTrees/tests/test__base.py

-=-
Modified: BTrees/branches/pure_python/BTrees/tests/test__base.py
===================================================================
--- BTrees/branches/pure_python/BTrees/tests/test__base.py	2012-12-04 02:16:19 UTC (rev 128498)
+++ BTrees/branches/pure_python/BTrees/tests/test__base.py	2012-12-04 02:16:20 UTC (rev 128499)
@@ -2542,7 +2542,44 @@
         lhs = self._makeSet(('a', 'b', 'c'))
         self.assertEqual(self._callFUT(lhs.__class__, lhs, None), lhs)
 
+    def test_both_sets_rhs_empty(self):
+        lhs = self._makeSet('a', 'b', 'c')
+        rhs = self._makeSet()
+        result = self._callFUT(lhs.__class__, lhs, rhs)
+        self.assertEqual(list(result), [])
 
+    def test_both_sets_lhs_empty(self):
+        lhs = self._makeSet()
+        rhs = self._makeSet('a', 'b', 'c')
+        result = self._callFUT(lhs.__class__, lhs, rhs)
+        self.assertEqual(list(result), [])
+
+    def test_lhs_set_rhs_mapping(self):
+        lhs = self._makeSet('a', 'b', 'c')
+        rhs = self._makeMapping({'a': 13, 'd': 12})
+        result = self._callFUT(lhs.__class__, lhs, rhs)
+        self.assertEqual(list(result), ['a'])
+
+    def test_lhs_mapping_rhs_set(self):
+        lhs = self._makeMapping({'a': 13, 'b': 12, 'c': 11})
+        rhs = self._makeSet('a', 'd')
+        result = self._callFUT(lhs.__class__, lhs, rhs)
+        self.assertTrue(isinstance(result, _Set))
+        self.assertEqual(list(result), ['a'])
+
+    def test_both_mappings_rhs_empty(self):
+        lhs = self._makeMapping({'a': 13, 'b': 12, 'c': 11})
+        rhs = self._makeMapping({})
+        result = self._callFUT(lhs.__class__, lhs, rhs)
+        self.assertEqual(list(result), [])
+
+    def test_both_mappings_rhs_non_empty(self):
+        lhs = self._makeMapping({'a': 13, 'c': 12, 'e': 11})
+        rhs = self._makeMapping({'b': 22, 'c': 44, 'd': 33})
+        result = self._callFUT(lhs.__class__, lhs, rhs)
+        self.assertEqual(list(result), ['c'])
+
+
 class _Jar(object):
     def __init__(self):
         self._current = set()