bpo-32894: Support unparsing of infinity numbers in ast_unparser.c (GH-17426)
diff --git a/Lib/test/test_future.py b/Lib/test/test_future.py
index 9b88e3f..ebeb833 100644
--- a/Lib/test/test_future.py
+++ b/Lib/test/test_future.py
@@ -5,6 +5,7 @@
from textwrap import dedent
import os
import re
+import sys
rx = re.compile(r'\((\S+).py, line (\d+)')
@@ -308,5 +309,18 @@
self.assertAnnotationEqual("f'{x=!a}'", expected="f'x={x!a}'")
self.assertAnnotationEqual("f'{x=!s:*^20}'", expected="f'x={x!s:*^20}'")
+ def test_infinity_numbers(self):
+ inf = "1e" + repr(sys.float_info.max_10_exp + 1)
+ infj = f"{inf}j"
+ self.assertAnnotationEqual("1e1000", expected=inf)
+ self.assertAnnotationEqual("1e1000j", expected=infj)
+ self.assertAnnotationEqual("-1e1000", expected=f"-{inf}")
+ self.assertAnnotationEqual("3+1e1000j", expected=f"3 + {infj}")
+ self.assertAnnotationEqual("(1e1000, 1e1000j)", expected=f"({inf}, {infj})")
+ self.assertAnnotationEqual("'inf'")
+ self.assertAnnotationEqual("('inf', 1e1000, 'infxxx', 1e1000j)", expected=f"('inf', {inf}, 'infxxx', {infj})")
+ self.assertAnnotationEqual("(1e1000, (1e1000j,))", expected=f"({inf}, ({infj},))")
+
+
if __name__ == "__main__":
unittest.main()