Merge branch 'main' into issue-102840

python · serhiy-storchaka · Feb 10, 2024 · Mar 20, 2023 · Mar 20, 2023 · Mar 20, 2023
commit 7dd8996b432c1cdba7559abe091f3b79d727ea5a
diff --git a/Lib/test/test_fractions.py b/Lib/test/test_fractions.py
@@ -1266,7 +1266,31 @@ def test_invalid_formats(self):
                 with self.assertRaises(ValueError):
                     format(fraction, spec)
 
-    def test_traceback_in_mod_and_floordiv_with_complex_objects(self):
+    @requires_IEEE_754
+    def test_float_format_testfile(self):
+        with open(format_testfile, encoding="utf-8") as testfile:
+            for line in testfile:
+                if line.startswith('--'):
+                    continue
+                line = line.strip()
+                if not line:
+                    continue
+
+                lhs, rhs = map(str.strip, line.split('->'))
+                fmt, arg = lhs.split()
+                if fmt == '%r':
+                    continue
+                fmt2 = fmt[1:]
+                with self.subTest(fmt=fmt, arg=arg):
+                    f = F(float(arg))
+                    self.assertEqual(format(f, fmt2), rhs)
+                    if f:  # skip negative zero
+                        self.assertEqual(format(-f, fmt2), '-' + rhs)
+                    f = F(arg)
+                    self.assertEqual(float(format(f, fmt2)), float(rhs))
+                    self.assertEqual(float(format(-f, fmt2)), float('-' + rhs))
+
+   def test_traceback_in_mod_and_floordiv_with_complex_objects(self):
         # See issue gh-102840 for more details.
 
         a = F(1, 2)