mirror of https://github.com/python/cpython
63 lines
2.2 KiB
Python
63 lines
2.2 KiB
Python
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"""Test the interactive interpreter."""
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import sys
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import os
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import unittest
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import subprocess
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from textwrap import dedent
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from test.support import cpython_only, SuppressCrashReport
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from test.support.script_helper import kill_python
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def spawn_repl(*args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, **kw):
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"""Run the Python REPL with the given arguments.
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kw is extra keyword args to pass to subprocess.Popen. Returns a Popen
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object.
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"""
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# To run the REPL without using a terminal, spawn python with the command
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# line option '-i' and the process name set to '<stdin>'.
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# The directory of argv[0] must match the directory of the Python
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# executable for the Popen() call to python to succeed as the directory
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# path may be used by Py_GetPath() to build the default module search
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# path.
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stdin_fname = os.path.join(os.path.dirname(sys.executable), "<stdin>")
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cmd_line = [stdin_fname, '-E', '-i']
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cmd_line.extend(args)
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# Set TERM=vt100, for the rationale see the comments in spawn_python() of
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# test.support.script_helper.
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env = kw.setdefault('env', dict(os.environ))
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env['TERM'] = 'vt100'
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return subprocess.Popen(cmd_line, executable=sys.executable,
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stdin=subprocess.PIPE,
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stdout=stdout, stderr=stderr,
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**kw)
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class TestInteractiveInterpreter(unittest.TestCase):
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@cpython_only
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def test_no_memory(self):
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# Issue #30696: Fix the interactive interpreter looping endlessly when
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# no memory. Check also that the fix does not break the interactive
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# loop when an exception is raised.
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user_input = """
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import sys, _testcapi
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1/0
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print('After the exception.')
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_testcapi.set_nomemory(0)
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sys.exit(0)
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"""
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user_input = dedent(user_input)
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user_input = user_input.encode()
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p = spawn_repl()
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with SuppressCrashReport():
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p.stdin.write(user_input)
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output = kill_python(p)
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self.assertIn(b'After the exception.', output)
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# Exit code 120: Py_FinalizeEx() failed to flush stdout and stderr.
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self.assertIn(p.returncode, (1, 120))
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if __name__ == "__main__":
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unittest.main()
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