test: Add failing generator test for inspect.getsourcelines

Author: George-Ogden

Lib/test/test_inspect/inspect_fodder2.py

@@ -369,3 +369,11 @@ class dc364:
 # line 369
 dc370 = dataclasses.make_dataclass('dc370', (('x', int), ('y', int)))
 dc371 = dataclasses.make_dataclass('dc370', (('x', int), ('y', int)), module=__name__)
+
+# line 373
+from inspect import currentframe
+def generator_frame():
+    loops = (
+        currentframe() for _ in [0]
+    )
+    return list(loops)[0]

Lib/test/test_inspect/test_inspect.py

@@ -1195,6 +1195,11 @@ def test_class_definition_same_name_diff_methods(self):
         self.assertSourceEqual(mod2.cls296, 296, 298)
         self.assertSourceEqual(mod2.cls310, 310, 312)
 
+    def test_generator_frame(self):
+        frame = mod2.generator_frame()
+        assert frame is not None
+        self.assertSourceEqual(frame, 375, 379)
+
 class TestNoEOL(GetSourceBase):
     def setUp(self):
         self.tempdir = TESTFN + '_dir'