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gh-102541: Add test case for help() for non_existent_module #106340

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Merged
merged 4 commits into from
Jul 11, 2023
Merged

gh-102541: Add test case for help() for non_existent_module #106340

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074d6c6
gh-102541: Add test case for `Helper.help('module')` for non-existent…
Eclips4 Jul 2, 2023
2c7e16b
Remove redundant import
Eclips4 Jul 2, 2023
6cb8bbb
Rewrite test using help CLI
Eclips4 Jul 2, 2023
fa73458
Simplify the new test
terryjreedy Jul 11, 2023
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11 changes: 10 additions & 1 deletion Lib/test/test_pydoc.py
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Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,8 @@
from urllib.request import urlopen, urlcleanup
from test.support import import_helper
from test.support import os_helper
from test.support.script_helper import assert_python_ok, assert_python_failure
from test.support.script_helper import (assert_python_ok,
assert_python_failure, spawn_python)
from test.support import threading_helper
from test.support import (reap_children, captured_output, captured_stdout,
captured_stderr, is_emscripten, is_wasi,
Expand Down Expand Up @@ -631,6 +632,14 @@ def test_builtin_on_metaclasses(self):
# Testing that the subclasses section does not appear
self.assertNotIn('Built-in subclasses', text)

def test_fail_help_cli(self):
elines = (missing_pattern % 'abd').splitlines()
with spawn_python("-c" "help()") as proc:
out, _ = proc.communicate(b"abd")
olines = out.decode().splitlines()[-9:-6]
olines[0] = olines[0].removeprefix('help> ')
self.assertEqual(elines, olines)

def test_fail_help_output_redirect(self):
with StringIO() as buf:
helper = pydoc.Helper(output=buf)
Expand Down