bpo-28528: Fix pdb.checkline() attribute error when 'curframe' is None. (GH-25438) (#26050)
Co-authored-by: Thomas Kluyver <takowl@gmail.com>
(cherry picked from commit 8563a7052ccd98e6a381d361664ce567afd5eb6e)
Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@innova.no>
diff --git a/Lib/test/test_pdb.py b/Lib/test/test_pdb.py
index 870eab4..cd096e7 100644
--- a/Lib/test/test_pdb.py
+++ b/Lib/test/test_pdb.py
@@ -9,6 +9,7 @@
import unittest
import subprocess
import textwrap
+import linecache
from contextlib import ExitStack
from io import StringIO
@@ -1807,10 +1808,47 @@ def test_issue42383(self):
self.assertEqual(stdout.split('\n')[6].rstrip('\r'), expected)
+class ChecklineTests(unittest.TestCase):
+ def setUp(self):
+ linecache.clearcache() # Pdb.checkline() uses linecache.getline()
+
+ def tearDown(self):
+ os_helper.unlink(os_helper.TESTFN)
+
+ def test_checkline_before_debugging(self):
+ with open(os_helper.TESTFN, "w") as f:
+ f.write("print(123)")
+ db = pdb.Pdb()
+ self.assertEqual(db.checkline(os_helper.TESTFN, 1), 1)
+
+ def test_checkline_after_reset(self):
+ with open(os_helper.TESTFN, "w") as f:
+ f.write("print(123)")
+ db = pdb.Pdb()
+ db.reset()
+ self.assertEqual(db.checkline(os_helper.TESTFN, 1), 1)
+
+ def test_checkline_is_not_executable(self):
+ with open(os_helper.TESTFN, "w") as f:
+ # Test for comments, docstrings and empty lines
+ s = textwrap.dedent("""
+ # Comment
+ \"\"\" docstring \"\"\"
+ ''' docstring '''
+
+ """)
+ f.write(s)
+ db = pdb.Pdb()
+ num_lines = len(s.splitlines()) + 2 # Test for EOF
+ for lineno in range(num_lines):
+ self.assertFalse(db.checkline(os_helper.TESTFN, lineno))
+
+
def load_tests(*args):
from test import test_pdb
suites = [
unittest.makeSuite(PdbTestCase),
+ unittest.makeSuite(ChecklineTests),
doctest.DocTestSuite(test_pdb)
]
return unittest.TestSuite(suites)