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import pickle
import traceback
from tblib import Traceback
from tblib import pickling_support
pickling_support.install()
pytest_plugins = ('pytester',)
def test_get_locals():
def get_locals(frame):
print(frame, frame.f_locals)
if 'my_variable' in frame.f_locals:
return {'my_variable': int(frame.f_locals['my_variable'])}
else:
return {}
def func(my_arg='2'):
my_variable = '1'
raise ValueError(my_variable)
try:
func()
except Exception as e:
exc = e
else:
raise AssertionError
f_locals = exc.__traceback__.tb_next.tb_frame.f_locals
assert 'my_variable' in f_locals
assert f_locals['my_variable'] == '1'
value = Traceback(exc.__traceback__, get_locals=get_locals).as_dict()
lineno = exc.__traceback__.tb_lineno
assert value == {
'tb_frame': {
'f_globals': {'__name__': 'test_tblib', '__file__': __file__},
'f_locals': {},
'f_code': {'co_filename': __file__, 'co_name': 'test_get_locals'},
'f_lineno': lineno + 10,
},
'tb_lineno': lineno,
'tb_next': {
'tb_frame': {
'f_globals': {'__name__': 'test_tblib', '__file__': __file__},
'f_locals': {'my_variable': 1},
'f_code': {'co_filename': __file__, 'co_name': 'func'},
'f_lineno': lineno - 3,
},
'tb_lineno': lineno - 3,
'tb_next': None,
},
}
assert Traceback.from_dict(value).tb_next.tb_frame.f_locals == {'my_variable': 1}
def test_parse_traceback():
tb1 = Traceback.from_string(
"""
Traceback (most recent call last):
File "file1", line 123, in <module>
code1
File "file2", line 234, in ???
code2
File "file3", line 345, in function3
File "file4", line 456, in
code4
KeyboardInterrupt"""
)
pytb = tb1.as_traceback()
assert traceback.format_tb(pytb) == [
' File "file1", line 123, in <module>\n',
' File "file2", line 234, in ???\n',
' File "file3", line 345, in function3\n',
]
tb2 = Traceback(pytb)
expected_dict = {
'tb_frame': {
'f_code': {'co_filename': 'file1', 'co_name': '<module>'},
'f_globals': {'__file__': 'file1', '__name__': '?'},
'f_locals': {},
'f_lineno': 123,
},
'tb_lineno': 123,
'tb_next': {
'tb_frame': {
'f_code': {'co_filename': 'file2', 'co_name': '???'},
'f_globals': {'__file__': 'file2', '__name__': '?'},
'f_locals': {},
'f_lineno': 234,
},
'tb_lineno': 234,
'tb_next': {
'tb_frame': {
'f_code': {'co_filename': 'file3', 'co_name': 'function3'},
'f_globals': {'__file__': 'file3', '__name__': '?'},
'f_locals': {},
'f_lineno': 345,
},
'tb_lineno': 345,
'tb_next': None,
},
},
}
tb3 = Traceback.from_dict(expected_dict)
tb4 = pickle.loads(pickle.dumps(tb3)) # noqa: S301
assert tb4.as_dict() == tb3.as_dict() == tb2.as_dict() == tb1.as_dict() == expected_dict
def test_large_line_number():
line_number = 2**31 - 1
tb1 = Traceback.from_string(
f"""
Traceback (most recent call last):
File "file1", line {line_number}, in <module>
code1
"""
).as_traceback()
assert tb1.tb_lineno == line_number
def test_pytest_integration(testdir):
test = testdir.makepyfile(
"""
from tblib import Traceback
def test_raise():
tb1 = Traceback.from_string('''
Traceback (most recent call last):
File "file1", line 123, in <module>
code1
File "file2", line 234, in ???
code2
File "file3", line 345, in function3
File "file4", line 456, in ""
''')
pytb = tb1.as_traceback()
raise RuntimeError().with_traceback(pytb)
"""
)
# mode(auto / long / short / line / native / no).
result = testdir.runpytest_subprocess('--tb=long', '-vv', test)
result.stdout.fnmatch_lines(
[
'_ _ _ _ _ _ _ _ *',
'',
'> [?][?][?]',
'',
'file1:123:*',
'_ _ _ _ _ _ _ _ *',
'',
'> [?][?][?]',
'',
'file2:234:*',
'_ _ _ _ _ _ _ _ *',
'',
'> [?][?][?]',
'',
'file3:345:*',
'_ _ _ _ _ _ _ _ *',
'',
'> [?][?][?]',
'E RuntimeError',
'',
'file4:456: RuntimeError',
'===*=== 1 failed in * ===*===',
]
)
result = testdir.runpytest_subprocess('--tb=short', '-vv', test)
result.stdout.fnmatch_lines(
[
'test_pytest_integration.py:*: in test_raise',
' raise RuntimeError().with_traceback(pytb)',
'file1:123: in <module>',
' ???',
'file2:234: in ???',
' ???',
'file3:345: in function3',
' ???',
'file4:456: in ""',
' ???',
'E RuntimeError',
]
)
result = testdir.runpytest_subprocess('--tb=line', '-vv', test)
result.stdout.fnmatch_lines(
[
'===*=== FAILURES ===*===',
'file4:456: RuntimeError',
'===*=== 1 failed in * ===*===',
]
)
result = testdir.runpytest_subprocess('--tb=native', '-vv', test)
result.stdout.fnmatch_lines(
[
'Traceback (most recent call last):',
' File "*test_pytest_integration.py", line *, in test_raise',
' raise RuntimeError().with_traceback(pytb)',
' File "file1", line 123, in <module>',
' File "file2", line 234, in ???',
' File "file3", line 345, in function3',
' File "file4", line 456, in ""',
'RuntimeError',
]
)
|
