181 lines
4.3 KiB
Python
181 lines
4.3 KiB
Python
"""
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That native debug better work!
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"""
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from os import path
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import pytest
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import pexpect
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from .test_docs_examples import repodir
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def examples_dir():
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"""Return the abspath to the examples directory.
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"""
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return path.join(repodir(), 'examples', 'debugging/')
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def mk_cmd(ex_name: str) -> str:
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"""Generate a command suitable to pass to ``pexpect.spawn()``.
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"""
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return ' '.join(
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['python',
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path.join(examples_dir(), f'{ex_name}.py')]
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)
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@pytest.fixture
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def spawn(
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testdir,
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arb_addr,
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) -> pexpect.spawn:
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def _spawn(cmd):
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return testdir.spawn(
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cmd=mk_cmd(cmd),
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expect_timeout=3,
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)
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return _spawn
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@pytest.mark.parametrize(
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'user_in_out',
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[
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('c', 'AssertionError'),
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('q', 'AssertionError'),
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],
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ids=lambda item: item[1],
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)
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def test_root_actor_error(spawn, user_in_out):
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"""Demonstrate crash handler entering pdbpp from basic error in root actor.
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"""
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user_input, expect_err_str = user_in_out
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child = spawn('root_actor_error')
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# scan for the pdbpp prompt
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child.expect("\(Pdb\+\+\)")
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# make sure expected logging and error arrives
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assert 'TTY lock acquired' in str(child.before)
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assert 'AssertionError' in str(child.before)
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# send user command
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child.sendline(user_input)
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child.expect('\r\n')
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child.expect('TTY lock released')
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# process should exit
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child.expect(pexpect.EOF)
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assert expect_err_str in str(child.before)
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@pytest.mark.parametrize(
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'user_in_out',
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[
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('c', None),
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('q', 'bdb.BdbQuit'),
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],
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ids=lambda item: f'{item[0]} -> {item[1]}',
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)
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def test_root_actor_bp(spawn, user_in_out):
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"""Demonstrate breakpoint from in root actor.
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"""
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user_input, expect_err_str = user_in_out
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child = spawn('root_actor_breakpoint')
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# scan for the pdbpp prompt
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child.expect("\(Pdb\+\+\)")
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assert 'Error' not in str(child.before)
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# send user command
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child.sendline(user_input)
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child.expect('\r\n')
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# process should exit
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child.expect(pexpect.EOF)
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if expect_err_str is None:
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assert 'Error' not in str(child.before)
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else:
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assert expect_err_str in str(child.before)
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def test_subactor_error(spawn):
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child = spawn('subactor_error')
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# scan for the pdbpp prompt
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child.expect("\(Pdb\+\+\)")
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before = str(child.before.decode())
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assert "Attaching to pdb in crashed actor: ('name_error'" in before
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# send user command
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# (in this case it's the same for 'continue' vs. 'quit')
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child.sendline('continue')
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child.expect('\r\n')
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# the debugger should enter a second time in the nursery
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# creating actor
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child.expect("\(Pdb\+\+\)")
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before = str(child.before.decode())
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# root actor gets debugger engaged
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assert "Attaching to pdb in crashed actor: ('arbiter'" in before
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# error is a remote error propagated from the subactor
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assert "RemoteActorError: ('name_error'" in before
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child.sendline('c')
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child.expect('\r\n')
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# process should exit
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child.expect(pexpect.EOF)
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def test_subactor_breakpoint(spawn):
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child = spawn('subactor_breakpoint')
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# scan for the pdbpp prompt
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child.expect("\(Pdb\+\+\)")
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before = str(child.before.decode())
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assert "Attaching pdb to actor: ('breakpoint_forever'" in before
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# do some "next" commands to demonstrate recurrent breakpoint
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# entries
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for _ in range(10):
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child.sendline('next')
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child.expect("\(Pdb\+\+\)")
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# now run some "continues" to show re-entries
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for _ in range(5):
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child.sendline('continue')
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child.expect("\(Pdb\+\+\)")
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before = str(child.before.decode())
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assert "Attaching pdb to actor: ('breakpoint_forever'" in before
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# finally quit the loop
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child.sendline('q')
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# child process should exit but parent will capture pdb.BdbQuit
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child.expect("\(Pdb\+\+\)")
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before = str(child.before.decode())
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assert "RemoteActorError: ('breakpoint_forever'" in before
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assert 'bdb.BdbQuit' in before
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# quit the parent
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child.sendline('c')
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# process should exit
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child.expect(pexpect.EOF)
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before = str(child.before.decode())
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assert "RemoteActorError: ('breakpoint_forever'" in before
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assert 'bdb.BdbQuit' in before
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