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113 lines
4.0 KiB
113 lines
4.0 KiB
3 years ago
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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,
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executable=sys.executable,
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text=True,
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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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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('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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@cpython_only
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def test_multiline_string_parsing(self):
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# bpo-39209: Multiline string tokens need to be handled in the tokenizer
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# in two places: the interactive path and the non-interactive path.
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user_input = '''\
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x = """<?xml version="1.0" encoding="iso-8859-1"?>
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<test>
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<Users>
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<fun25>
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<limits>
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<total>0KiB</total>
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<kbps>0</kbps>
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<rps>1.3</rps>
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<connections>0</connections>
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</limits>
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<usages>
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<total>16738211KiB</total>
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<kbps>237.15</kbps>
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<rps>1.3</rps>
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<connections>0</connections>
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</usages>
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<time_to_refresh>never</time_to_refresh>
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<limit_exceeded_URL>none</limit_exceeded_URL>
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</fun25>
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</Users>
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</test>"""
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'''
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user_input = dedent(user_input)
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p = spawn_repl()
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p.stdin.write(user_input)
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output = kill_python(p)
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self.assertEqual(p.returncode, 0)
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def test_close_stdin(self):
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user_input = dedent('''
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import os
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print("before close")
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os.close(0)
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''')
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prepare_repl = dedent('''
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from test.support import suppress_msvcrt_asserts
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suppress_msvcrt_asserts()
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''')
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process = spawn_repl('-c', prepare_repl)
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output = process.communicate(user_input)[0]
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self.assertEqual(process.returncode, 0)
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self.assertIn('before close', output)
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if __name__ == "__main__":
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unittest.main()
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