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gh-139445: Skip pyrepl tests if the terminal is not supported #154497

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gh-139445: Skip pyrepl tests if the terminal is not supported #154497

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17 changes: 15 additions & 2 deletions Lib/test/test_pyrepl/test_pyrepl.py
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@
import tempfile
from functools import partial
from pkgutil import ModuleInfo
from unittest import TestCase, skipUnless, skipIf, SkipTest
from unittest import TestCase, skipUnless, SkipTest
from unittest.mock import Mock, patch
import warnings
from test.support import (
Expand All @@ -37,6 +37,7 @@
code_to_events,
)
from _colorize import ANSIColors, get_theme
from _pyrepl import terminfo
from _pyrepl.console import Event
from _pyrepl.completing_reader import stripcolor
from _pyrepl._module_completer import (
Expand Down Expand Up @@ -1998,8 +1999,20 @@ def test_dumb_terminal_exits_cleanly(self):
self.assertNotIn("Traceback", output)


def supports_pyrepl():
# pyrepl falls back to the basic REPL if the terminal lacks any of the
# capabilities which UnixConsole requires. This covers an unset or
# "dumb" TERM as well, they are resolved to the "dumb" capabilities.
try:
info = terminfo.TermInfo(None)
except Exception:
return False
return all(info.get(cap) is not None
for cap in ("bel", "clear", "cup", "el"))


@skipUnless(pty, "requires pty")
@skipIf((os.environ.get("TERM") or "dumb") == "dumb", "can't use pyrepl in dumb terminal")
@skipUnless(supports_pyrepl(), "can't use pyrepl in this terminal")
class TestMain(ReplTestCase):
def setUp(self):
# Cleanup from PYTHON* variables to isolate from local
Expand Down
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