def test_variable_arglengths():
pop = quickstart('foo', df=pandas.DataFrame({'a': [11, 22]}),
session_capture_name='test_population.py')
spec = pm.compile_argspec_transforms(hasvarargs, {'population_name': 0})
assert ['_u'] == spec['required_names']
assert 2 == len(spec['required_transformers'])
assert ['pop'] == spec['optional_names']
assert 1 == len(spec['optional_transformers'])
xfm = spec['optional_transformers']['pop']
assert None == xfm(pop, {})
assert 7 == xfm(pop, {'pop': 7})
assert None == xfm(pop, {'zip': 7})
assert 'args' == spec['varargs']
assert None == spec['varkw']
assert ('foo', 1, 3) == pop.hasvarargs("U", 1, 2, 3, 4)
assert ('foo', 'pip', 3) == pop.hasvarkw("U", pop='pip', a=1, b=2, c=3)
assert ('foo', None, 0, 0) == pop.hasboth_arg('U', 'V')
assert ('foo', 'W', 1, 2) == pop.hasboth_arg("U", "V", "W", "X",
y="Y", z="Z")
assert ('foo', 'foo', 0, 0) == pop.hasboth_argkwarg('U', 'V')
assert ('foo', 'W', 1, 2) == pop.hasboth_argkwarg("U", "V", "W", "X",
y="Y", z="Z")
assert ('foo', 'fizz', 0, 0) == pop.hasboth_haspop('U', 'V')
with pytest.raises(TypeError) as exc:
pop.hasvarargs("U", 1, 2, 3, 4, pop='pip')
assert "multiple values for keyword argument 'pop'" in str(exc.value)
with pytest.raises(TypeError):
pop.hasvarargs("U", 1, 2, a=1, b=2)
with pytest.raises(TypeError):
pop.hasvarkw("U", 1, 2, 3, 4, 5, 6, 7)
with pytest.raises(TypeError):
pop.hasboth_arg()
with pytest.raises(TypeError):
pop.hasboth_argkwarg()
# Can only fill named parameters with population-implicit values.
with pytest.raises(IndexError):
@pm.population_method(population_name='0')
def cannot_fill_unnamed_kwargs(*args, **kwargs):
pass
with pytest.raises(IndexError):
@pm.population_method(population_name='pop')
def cannot_fill_unnamed_args(*args, **kwargs):
pass
def prepare():
if testvars['dataset'] is None:
(df, csv_data) = test_plot_utils.dataset(40)
tempd = tempfile.mkdtemp(prefix="bdbcontrib-test-population")
csv_path = os.path.join(tempd, "data.csv")
with open(csv_path, "w") as csv_f:
csv_f.write(csv_data.getvalue())
bdb_path = os.path.join(tempd, "data.bdb")
name = ''.join(random.choice(ascii_lowercase) for _ in range(32))
dts = quickstart(name=name, csv_path=csv_path, bdb_path=bdb_path,
logger=CaptureLogger(
verbose=pytest.config.option.verbose),
session_capture_name="test_population.py")
ensure_timeout(10, lambda: dts.analyze(models=10, iterations=20))
testvars['dataset'] = dts
testvars['input_df'] = df
yield testvars['dataset'], testvars['input_df']
def test_method_calls():
pop = quickstart('foo', df=pandas.DataFrame({'a': [11, 22]}),
session_capture_name='test_population.py')
assert 42 == pop.minimal_population_method()
# It's ok to name or not name your positional args.
# (But it's a syntax error to have a positional arg after a named one.)
assert '12foo_cc', pop.example_population_method(
df1='select * limit 1', df2=pandas.DataFrame({'b': [23, 34]}))
assert '12foo_cc', pop.example_population_method(
'select * limit 1', df2=pandas.DataFrame({'b': [23, 34]}))
assert '12foo_cc', pop.example_population_method(
'select * limit 1', pandas.DataFrame({'b': [23, 34]}))
# It's okay to name them and get them in the wrong order too.
assert '12foo_cc', pop.example_population_method(
df2=pandas.DataFrame({'b': [23, 34]}), df1='select * limit 1')
# The bdb argument should be present and explained in the function, and
# should be absent in the method, where it's implicit.
as_method = pop.example_population_method.__doc__
as_function = example_population_method.__doc__
assert not re.search(r'bdb', as_method), as_method
assert re.search('bdb', as_function), as_function
with pytest.raises(TypeError) as exc:
pop.minimal_population_method(3)
assert ('test_population_method.minimal_population_method()'
' takes no arguments (1 given)' == str(exc.value)), repr(exc)
epm="test_population_method.example_population_method()"
with pytest.raises(TypeError) as exc:
pop.example_population_method([5])
assert (epm + " takes at least 2 arguments (1 given)"
== str(exc.value)), repr(exc)
with pytest.raises(TypeError) as exc:
pop.example_population_method([5], gen=True)
# This message is among Python's uglier warts, but I want to be consistent.
assert (epm + " takes at least 2 arguments (2 given)"
== str(exc.value)), repr(exc)
with pytest.raises(TypeError) as exc:
pop.example_population_method([1], [2], [3], [4])
assert (epm + " takes at most 3 arguments (4 given)"
== str(exc.value)), repr(exc)
with pytest.raises(TypeError) as exc:
pop.example_population_method("SELECT * FROM %t", "SELECT * FROM %g",
b="bang")
assert (epm + " got an unexpected keyword argument 'b'"
== str(exc.value)), repr(exc)
with pytest.raises(TypeError) as exc:
pop.example_population_method(
"SELECT * FROM %t", df1="SELECT * FROM %g")
# This is another misleading message, because the only way for it to happen
# is with a required positional argument that happens to be named at the
# call site. A caller might, in this case, expect keywords to be interpreted
# first, for example, and positional arguments consumed in order thereafter.
# Not to say that that would be a better choice. I would simply prefer "for
# 2nd argument df1" rather than "for keyword argument df1".
# Again, I find it more important to be consistent than to be right.
assert (epm + " got multiple values for keyword argument 'df1'"
== str(exc.value)), repr(exc)