bpo-44368: Ensure we don't raise incorrect custom syntax errors with soft keywords (GH-26630)

1 files changed, 19 insertions, 1 deletions

diff --git a/Lib/test/test_syntax.py b/Lib/test/test_syntax.py
index 5d3ce4c..72e4ab1 100644
--- a/Lib/test/test_syntax.py
+++ b/Lib/test/test_syntax.py
@@ -267,7 +267,7 @@ Traceback (most recent call last):
 SyntaxError: invalid syntax. Perhaps you forgot a comma?
 
 # Make sure soft keywords constructs don't raise specialized
-# errors regarding missing commas
+# errors regarding missing commas or other spezialiced errors
 
 >>> match x:
 ...     y = 3
@@ -280,6 +280,24 @@ SyntaxError: invalid syntax
 Traceback (most recent call last):
 SyntaxError: invalid syntax
 
+>>> match x:
+...     case $:
+...        ...
+Traceback (most recent call last):
+SyntaxError: invalid syntax
+
+>>> match ...:
+...     case {**rest, "key": value}:
+...        ...
+Traceback (most recent call last):
+SyntaxError: invalid syntax
+
+>>> match ...:
+...     case {**_}:
+...        ...
+Traceback (most recent call last):
+SyntaxError: invalid syntax
+
 From compiler_complex_args():
 
 >>> def f(None=1):