Backport improved test coverage for string.py
diff --git a/Lib/test/test_string.py b/Lib/test/test_string.py
index f46be63..a352ee3 100644
--- a/Lib/test/test_string.py
+++ b/Lib/test/test_string.py
@@ -112,6 +112,30 @@
self.assertRaises(ValueError, fmt.format, "{0}", 10, 20, i=100)
self.assertRaises(ValueError, fmt.format, "{i}", 10, 20, i=100)
+ def test_vformat_assert(self):
+ cls = string.Formatter()
+ kwargs = {
+ "i": 100
+ }
+ self.assertRaises(ValueError, cls._vformat,
+ cls.format, "{0}", kwargs, set(), -2)
+
+ def test_convert_field(self):
+ cls = string.Formatter()
+ self.assertEqual(cls.format("{0!s}", 'foo'), 'foo')
+ self.assertRaises(ValueError, cls.format, "{0!h}", 'foo')
+
+ def test_get_field(self):
+ cls = string.Formatter()
+ class MyClass:
+ name = 'lumberjack'
+ x = MyClass()
+ self.assertEqual(cls.format("{0.name}", x), 'lumberjack')
+
+ lookup = ["eggs", "and", "spam"]
+ self.assertEqual(cls.format("{0[2]}", lookup), 'spam')
+
+
def test_main():
support.run_unittest(ModuleTest)