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-rw-r--r--Lib/test/test_cmd_line.py11
1 files changed, 6 insertions, 5 deletions
diff --git a/Lib/test/test_cmd_line.py b/Lib/test/test_cmd_line.py
index f540973c11e..c17d749d4a1 100644
--- a/Lib/test/test_cmd_line.py
+++ b/Lib/test/test_cmd_line.py
@@ -39,7 +39,8 @@ class CmdLineTest(unittest.TestCase):
def verify_valid_flag(self, cmd_line):
rc, out, err = assert_python_ok(cmd_line)
- self.assertTrue(out == b'' or out.endswith(b'\n'))
+ if out != b'':
+ self.assertEndsWith(out, b'\n')
self.assertNotIn(b'Traceback', out)
self.assertNotIn(b'Traceback', err)
return out
@@ -89,8 +90,8 @@ class CmdLineTest(unittest.TestCase):
version = ('Python %d.%d' % sys.version_info[:2]).encode("ascii")
for switch in '-V', '--version', '-VV':
rc, out, err = assert_python_ok(switch)
- self.assertFalse(err.startswith(version))
- self.assertTrue(out.startswith(version))
+ self.assertNotStartsWith(err, version)
+ self.assertStartsWith(out, version)
def test_verbose(self):
# -v causes imports to write to stderr. If the write to
@@ -380,7 +381,7 @@ class CmdLineTest(unittest.TestCase):
p.stdin.flush()
data, rc = _kill_python_and_exit_code(p)
self.assertEqual(rc, 0)
- self.assertTrue(data.startswith(b'x'), data)
+ self.assertStartsWith(data, b'x')
def test_large_PYTHONPATH(self):
path1 = "ABCDE" * 100
@@ -1039,7 +1040,7 @@ class CmdLineTest(unittest.TestCase):
stderr=subprocess.PIPE,
text=True)
err_msg = "Unknown option: --unknown-option\nusage: "
- self.assertTrue(proc.stderr.startswith(err_msg), proc.stderr)
+ self.assertStartsWith(proc.stderr, err_msg)
self.assertNotEqual(proc.returncode, 0)
def test_int_max_str_digits(self):