f-strings: More tests for empty expressions along with missing closing braces.

diff --git a/Lib/test/test_fstring.py b/Lib/test/test_fstring.py
index 10c5849cf32a69efbccb9a741adadaa38f9def32..d6f781c846e28dcf7acea1e11a48f99799ac5d45 100644 (file)
--- a/Lib/test/test_fstring.py
+++ b/Lib/test/test_fstring.py
@@ -299,6 +299,13 @@ f'{a * x()}'"""
 
                              "f'{!}'",
                              "f'{:}'",
+
+                             # We find the empty expression before the
+                             #  missing closing brace.
+                             "f'{!'",
+                             "f'{!s:'",
+                             "f'{:'",
+                             "f'{:x'",
                              ])
 
     def test_parens_in_expressions(self):