mirror of https://github.com/python/cpython
281 lines
8.9 KiB
Python
281 lines
8.9 KiB
Python
"""Test the interactive interpreter."""
|
|
|
|
import os
|
|
import select
|
|
import subprocess
|
|
import sys
|
|
import unittest
|
|
from textwrap import dedent
|
|
from test import support
|
|
from test.support import (
|
|
cpython_only,
|
|
has_subprocess_support,
|
|
os_helper,
|
|
SuppressCrashReport,
|
|
SHORT_TIMEOUT,
|
|
)
|
|
from test.support.script_helper import kill_python
|
|
from test.support.import_helper import import_module
|
|
|
|
try:
|
|
import pty
|
|
except ImportError:
|
|
pty = None
|
|
|
|
|
|
if not has_subprocess_support:
|
|
raise unittest.SkipTest("test module requires subprocess")
|
|
|
|
|
|
def spawn_repl(*args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, **kw):
|
|
"""Run the Python REPL with the given arguments.
|
|
|
|
kw is extra keyword args to pass to subprocess.Popen. Returns a Popen
|
|
object.
|
|
"""
|
|
|
|
# To run the REPL without using a terminal, spawn python with the command
|
|
# line option '-i' and the process name set to '<stdin>'.
|
|
# The directory of argv[0] must match the directory of the Python
|
|
# executable for the Popen() call to python to succeed as the directory
|
|
# path may be used by Py_GetPath() to build the default module search
|
|
# path.
|
|
stdin_fname = os.path.join(os.path.dirname(sys.executable), "<stdin>")
|
|
cmd_line = [stdin_fname, '-E', '-i']
|
|
cmd_line.extend(args)
|
|
|
|
# Set TERM=vt100, for the rationale see the comments in spawn_python() of
|
|
# test.support.script_helper.
|
|
env = kw.setdefault('env', dict(os.environ))
|
|
env['TERM'] = 'vt100'
|
|
return subprocess.Popen(cmd_line,
|
|
executable=sys.executable,
|
|
text=True,
|
|
stdin=subprocess.PIPE,
|
|
stdout=stdout, stderr=stderr,
|
|
**kw)
|
|
|
|
def run_on_interactive_mode(source):
|
|
"""Spawn a new Python interpreter, pass the given
|
|
input source code from the stdin and return the
|
|
result back. If the interpreter exits non-zero, it
|
|
raises a ValueError."""
|
|
|
|
process = spawn_repl()
|
|
process.stdin.write(source)
|
|
output = kill_python(process)
|
|
|
|
if process.returncode != 0:
|
|
raise ValueError("Process didn't exit properly.")
|
|
return output
|
|
|
|
|
|
class TestInteractiveInterpreter(unittest.TestCase):
|
|
|
|
@cpython_only
|
|
# Python built with Py_TRACE_REFS fail with a fatal error in
|
|
# _PyRefchain_Trace() on memory allocation error.
|
|
@unittest.skipIf(support.Py_TRACE_REFS, 'cannot test Py_TRACE_REFS build')
|
|
def test_no_memory(self):
|
|
import_module("_testcapi")
|
|
# Issue #30696: Fix the interactive interpreter looping endlessly when
|
|
# no memory. Check also that the fix does not break the interactive
|
|
# loop when an exception is raised.
|
|
user_input = """
|
|
import sys, _testcapi
|
|
1/0
|
|
print('After the exception.')
|
|
_testcapi.set_nomemory(0)
|
|
sys.exit(0)
|
|
"""
|
|
user_input = dedent(user_input)
|
|
p = spawn_repl()
|
|
with SuppressCrashReport():
|
|
p.stdin.write(user_input)
|
|
output = kill_python(p)
|
|
self.assertIn('After the exception.', output)
|
|
# Exit code 120: Py_FinalizeEx() failed to flush stdout and stderr.
|
|
self.assertIn(p.returncode, (1, 120))
|
|
|
|
@cpython_only
|
|
def test_multiline_string_parsing(self):
|
|
# bpo-39209: Multiline string tokens need to be handled in the tokenizer
|
|
# in two places: the interactive path and the non-interactive path.
|
|
user_input = '''\
|
|
x = """<?xml version="1.0" encoding="iso-8859-1"?>
|
|
<test>
|
|
<Users>
|
|
<fun25>
|
|
<limits>
|
|
<total>0KiB</total>
|
|
<kbps>0</kbps>
|
|
<rps>1.3</rps>
|
|
<connections>0</connections>
|
|
</limits>
|
|
<usages>
|
|
<total>16738211KiB</total>
|
|
<kbps>237.15</kbps>
|
|
<rps>1.3</rps>
|
|
<connections>0</connections>
|
|
</usages>
|
|
<time_to_refresh>never</time_to_refresh>
|
|
<limit_exceeded_URL>none</limit_exceeded_URL>
|
|
</fun25>
|
|
</Users>
|
|
</test>"""
|
|
'''
|
|
user_input = dedent(user_input)
|
|
p = spawn_repl()
|
|
p.stdin.write(user_input)
|
|
output = kill_python(p)
|
|
self.assertEqual(p.returncode, 0)
|
|
|
|
def test_close_stdin(self):
|
|
user_input = dedent('''
|
|
import os
|
|
print("before close")
|
|
os.close(0)
|
|
''')
|
|
prepare_repl = dedent('''
|
|
from test.support import suppress_msvcrt_asserts
|
|
suppress_msvcrt_asserts()
|
|
''')
|
|
process = spawn_repl('-c', prepare_repl)
|
|
output = process.communicate(user_input)[0]
|
|
self.assertEqual(process.returncode, 0)
|
|
self.assertIn('before close', output)
|
|
|
|
def test_interactive_traceback_reporting(self):
|
|
user_input = "1 / 0 / 3 / 4"
|
|
p = spawn_repl()
|
|
p.stdin.write(user_input)
|
|
output = kill_python(p)
|
|
self.assertEqual(p.returncode, 0)
|
|
|
|
traceback_lines = output.splitlines()[-6:-1]
|
|
expected_lines = [
|
|
"Traceback (most recent call last):",
|
|
" File \"<stdin>\", line 1, in <module>",
|
|
" 1 / 0 / 3 / 4",
|
|
" ~~^~~",
|
|
"ZeroDivisionError: division by zero",
|
|
]
|
|
self.assertEqual(traceback_lines, expected_lines)
|
|
|
|
def test_interactive_traceback_reporting_multiple_input(self):
|
|
user_input1 = dedent("""
|
|
def foo(x):
|
|
1 / x
|
|
|
|
""")
|
|
p = spawn_repl()
|
|
p.stdin.write(user_input1)
|
|
user_input2 = "foo(0)"
|
|
p.stdin.write(user_input2)
|
|
output = kill_python(p)
|
|
self.assertEqual(p.returncode, 0)
|
|
|
|
traceback_lines = output.splitlines()[-8:-1]
|
|
expected_lines = [
|
|
' File "<stdin>", line 1, in <module>',
|
|
' foo(0)',
|
|
' ~~~^^^',
|
|
' File "<stdin>", line 2, in foo',
|
|
' 1 / x',
|
|
' ~~^~~',
|
|
'ZeroDivisionError: division by zero'
|
|
]
|
|
self.assertEqual(traceback_lines, expected_lines)
|
|
|
|
def test_interactive_source_is_in_linecache(self):
|
|
user_input = dedent("""
|
|
def foo(x):
|
|
return x + 1
|
|
|
|
def bar(x):
|
|
return foo(x) + 2
|
|
""")
|
|
p = spawn_repl()
|
|
p.stdin.write(user_input)
|
|
user_input2 = dedent("""
|
|
import linecache
|
|
print(linecache.cache['<stdin>-1'])
|
|
""")
|
|
p.stdin.write(user_input2)
|
|
output = kill_python(p)
|
|
self.assertEqual(p.returncode, 0)
|
|
expected = "(30, None, [\'def foo(x):\\n\', \' return x + 1\\n\', \'\\n\'], \'<stdin>\')"
|
|
self.assertIn(expected, output, expected)
|
|
|
|
def test_asyncio_repl_reaches_python_startup_script(self):
|
|
with os_helper.temp_dir() as tmpdir:
|
|
script = os.path.join(tmpdir, "pythonstartup.py")
|
|
with open(script, "w") as f:
|
|
f.write("print('pythonstartup done!')" + os.linesep)
|
|
f.write("exit(0)" + os.linesep)
|
|
|
|
env = os.environ.copy()
|
|
env["PYTHONSTARTUP"] = script
|
|
subprocess.check_call(
|
|
[sys.executable, "-m", "asyncio"],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE,
|
|
env=env,
|
|
timeout=SHORT_TIMEOUT,
|
|
)
|
|
|
|
@unittest.skipUnless(pty, "requires pty")
|
|
def test_asyncio_repl_is_ok(self):
|
|
m, s = pty.openpty()
|
|
cmd = [sys.executable, "-m", "asyncio"]
|
|
proc = subprocess.Popen(
|
|
cmd,
|
|
stdin=s,
|
|
stdout=s,
|
|
stderr=s,
|
|
text=True,
|
|
close_fds=True,
|
|
env=os.environ,
|
|
)
|
|
os.close(s)
|
|
os.write(m, b"await asyncio.sleep(0)\n")
|
|
os.write(m, b"exit()\n")
|
|
output = []
|
|
while select.select([m], [], [], SHORT_TIMEOUT)[0]:
|
|
try:
|
|
data = os.read(m, 1024).decode("utf-8")
|
|
if not data:
|
|
break
|
|
except OSError:
|
|
break
|
|
output.append(data)
|
|
os.close(m)
|
|
try:
|
|
exit_code = proc.wait(timeout=SHORT_TIMEOUT)
|
|
except subprocess.TimeoutExpired:
|
|
proc.kill()
|
|
exit_code = proc.wait()
|
|
|
|
self.assertEqual(exit_code, 0)
|
|
|
|
class TestInteractiveModeSyntaxErrors(unittest.TestCase):
|
|
|
|
def test_interactive_syntax_error_correct_line(self):
|
|
output = run_on_interactive_mode(dedent("""\
|
|
def f():
|
|
print(0)
|
|
return yield 42
|
|
"""))
|
|
|
|
traceback_lines = output.splitlines()[-4:-1]
|
|
expected_lines = [
|
|
' return yield 42',
|
|
' ^^^^^',
|
|
'SyntaxError: invalid syntax'
|
|
]
|
|
self.assertEqual(traceback_lines, expected_lines)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|