Issue #9154: Fix parser module to understand function annotations.

1 files changed, 21 insertions, 0 deletions

diff --git a/Lib/test/test_parser.py b/Lib/test/test_parser.py
index 020acd500f..833d3178d6 100644
--- a/Lib/test/test_parser.py
+++ b/Lib/test/test_parser.py
@@ -146,6 +146,27 @@ class RoundtripLegalSyntaxTestCase(unittest.TestCase):
         self.check_suite("@funcattrs()\n"
                          "def f(): pass")
 
+        # keyword-only arguments
+        self.check_suite("def f(*, a): pass")
+        self.check_suite("def f(*, a = 5): pass")
+        self.check_suite("def f(*, a = 5, b): pass")
+        self.check_suite("def f(*, a, b = 5): pass")
+        self.check_suite("def f(*, a, b = 5, **kwds): pass")
+        self.check_suite("def f(*args, a): pass")
+        self.check_suite("def f(*args, a = 5): pass")
+        self.check_suite("def f(*args, a = 5, b): pass")
+        self.check_suite("def f(*args, a, b = 5): pass")
+        self.check_suite("def f(*args, a, b = 5, **kwds): pass")
+
+        # function annotations
+        self.check_suite("def f(a: int): pass")
+        self.check_suite("def f(a: int = 5): pass")
+        self.check_suite("def f(*args: list): pass")
+        self.check_suite("def f(**kwds: dict): pass")
+        self.check_suite("def f(*, a: int): pass")
+        self.check_suite("def f(*, a: int = 5): pass")
+        self.check_suite("def f() -> int: pass")
+
     def test_class_defs(self):
         self.check_suite("class foo():pass")
         self.check_suite("class foo(object):pass")