add dubmdbm fixture and recognition test

tests/test_dump-anydbm.py

@@ -34,6 +34,23 @@ def make_gdbm_test_db(request):
 	request.addfinalizer(delete_test_dumbdbm)
 	return db_name
 
+@pytest.fixture(scope = "function")
+def make_dumbdbm_test_db(request):
+	db_name ="test_dumbdbm"
+	print "creating", db_name
+	test_db = dumb.open(db_name, "n")
+	test_db['very first key'] = 'very first value'
+	test_db['second key'] = 'second value'
+	test_db.close()
+	def delete_test_dumbdbm():
+		print "deleting", db_name
+		os.remove(db_name+".dir")
+		os.remove(db_name+".bak")
+		os.remove(db_name+".dat")
+
+	request.addfinalizer(delete_test_dumbdbm)
+	return db_name+".dir"
+
 def test_assert_gdbm_db_is_created_and_correctly_identified(make_gdbm_test_db):
 	print "runing assert_gdbm_db_is_created_and_correctly_identified with gdbm test file"
 	assert whichdb(make_gdbm_test_db) == "dbm.gdbm" or "gdbm"
@@ -43,4 +60,8 @@ def test_assert_reading_gdbm_correctly(make_gdbm_test_db):
 	db = gdbm.open(make_gdbm_test_db, "r")
 	assert len(db.keys()) == 2
 	assert db.has_key('very first key')
-	assert db['very first key'] == 'very first value'
+	assert db['very first key'] == 'very first value'
+
+def test_assert_dumbdbm_db_is_created_and_correctly_identified(make_dumbdbm_test_db):
+	print "runing assert_dumbdbm_db_is_created_and_correctly_identified with gdbm test file"
+	assert whichdb(make_dumbdbm_test_db) == "dbm.dumb" or "dumbdbm"