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test_function.py
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test_function.py
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from ..utils import TranspileTestCase
class LambdaTests(TranspileTestCase):
def test_lambda(self):
self.assertCodeExecution("""
f = lambda : 42
print(f())
g = lambda x : x
print(g(10))
print((lambda x: x + '!!!')('hello'))
print((lambda x='something': x + '!!!')('hello'))
print((lambda x: x + '!!!')(x='hello'))
""")
def test_lambda_kwonly(self):
self.assertCodeExecution("""
print((lambda *,x='something': x + '!!!')())
""")
class FunctionTests(TranspileTestCase):
def test_function(self):
self.assertCodeExecution("""
def myfunc(value):
print(value * 3)
return value + 5
print("value =", myfunc(5))
""")
def test_function_name_attribute(self):
self.assertCodeExecution("""
def myfunc():
def otherfunc():
pass
print(otherfunc.__name__)
print(myfunc.__name__)
myfunc()
""")
def test_noargs_function(self):
self.assertCodeExecution("""
def myfunc():
print('Hello')
return 5
print("value =", myfunc())
""")
def test_void_function(self):
self.assertCodeExecution("""
def myfunc(value):
print(value * 3)
myfunc(5)
""")
def test_mainline(self):
self.assertCodeExecution("""
if __name__ == '__main__':
print("Hello, world")
""", run_in_function=False)
def test_inner_function(self):
self.assertCodeExecution("""
def myfunc(value):
print(value * 3)
def myinner(value2):
print(value2 * 4)
return value2 + 6
print("inner value =", myinner(10))
return value + 5
print("outer =", myfunc(5))
""", run_in_function=False)
def test_closure(self):
self.assertCodeExecution("""
def myfunc(value):
print(value * 3)
def myinner(value2):
print(value2 * value)
return value2 + 6
print("inner value =", myinner(10))
return value + 5
print("outer =", myfunc(5))
""")
def test_default_args(self):
self.assertCodeExecution("""
def myfunc(x, y=1, z=2):
print("x =", x)
print("y =", y)
print("z =", z)
myfunc(37)
""", run_in_function=False)
def test_override_some_default_args(self):
self.assertCodeExecution("""
def myfunc(x, y=1, z=2):
print("x =", x)
print("y =", y)
print("z =", z)
myfunc(37, 42)
""", run_in_function=False)
def test_overide_all_default_args(self):
self.assertCodeExecution("""
def myfunc(x, y=1, z=2):
print("x =", x)
print("y =", y)
print("z =", z)
myfunc(37, 42, 99)
""", run_in_function=False)
def test_use_kwargs(self):
self.assertCodeExecution("""
def myfunc(x, y=1, z=2):
print("x =", x)
print("y =", y)
print("z =", z)
myfunc(37, y=42)
""", run_in_function=False)
def test_use_kwargs_non_sequential(self):
self.assertCodeExecution("""
def myfunc(x, y=1, z=2):
print("x =", x)
print("y =", y)
print("z =", z)
myfunc(37, z=42)
""", run_in_function=False)
def test_use_all_kwargs(self):
self.assertCodeExecution("""
def myfunc(x, y=1, z=2):
print("x =", x)
print("y =", y)
print("z =", z)
myfunc(x=37, y=42, z=99)
""", run_in_function=False)
def test_use_all_kwargs_different_order(self):
self.assertCodeExecution("""
def myfunc(x, y=1, z=2):
print("x =", x)
print("y =", y)
print("z =", z)
myfunc(z=99, y=42, x=37)
""", run_in_function=False)
def test_call_function_with_var_args(self):
self.assertCodeExecution("""
def myfunc(*args):
print(args)
return args[0]
print("first arg =", myfunc(1, 2, 3, 4, 5))
""", run_in_function=False)
def test_call_function_with_kw(self):
self.assertCodeExecution("""
def myfunc(**kwargs):
print(kwargs['first'] * 3)
print(kwargs['second'] * 3)
return kwargs['first'] + kwargs['second']
print("values sum =", myfunc(first=1, second=2))
""", run_in_function=False)
def test_call_function_kw(self):
self.assertCodeExecution("""
def myfunc(**kwargs):
print(kwargs['first'] * 3)
print(kwargs['second'] * 3)
return kwargs['first'] + kwargs['second']
values = {'first': 1, 'second': 2}
print("values sum =", myfunc(**values))
""", run_in_function=False)
def test_call_function_var_kw(self):
self.assertCodeExecution("""
def myfunc(*args, **kwargs):
print(kwargs['first'] * 3)
print(kwargs['second'] * 3)
print(args)
return kwargs['first'] + kwargs['second']
values_tuple = (1, 2, 3, 4)
values_dict = {'first': 1, 'second': 2}
print("values sum =", myfunc(*values_tuple, **values_dict))
""", run_in_function=False)
def test_call_function_var(self):
self.assertCodeExecution("""
def myfunc(*args):
print(args)
return len(args)
values_tuple = (1, 2, 3, 4)
print("values count =", myfunc(*values_tuple))
""", run_in_function=False)
def test_redefine(self):
self.assertCodeExecution("""
def myfunc(value):
print(value * 3)
return value + 5
def myfunc(value):
print(value * 4)
return value + 6
print("value =", myfunc(5))
""")
def test_redefine_nested_from_other_function(self):
self.assertCodeExecution("""
def func():
def nested_func():
print("Hello World from func")
nested_func()
def func2():
def nested_func():
print("Hello World from func2")
nested_func()
func()
func2()
""")
def test_define_nested_generator(self):
self.assertCodeExecution("""
def wrapper():
def func():
def gen():
yield 'Hello World'
print(next(gen()))
func()
wrapper()
""")
def test_noarg_unexpected_extra_arg(self):
self.assertCodeExecution("""
def myfunc():
pass
myfunc(5)
""", exits_early=True)
def test_noarg_unexpected_extra_several_args(self):
self.assertCodeExecution("""
def myfunc():
return 16
print(myfunc(1, 2, 3))
""", exits_early=True)
def test_unexpected_extra_several_args(self):
self.assertCodeExecution("""
def myfunc(a):
return 16
print(myfunc(1, 2, 3))
""", exits_early=True)
def test_multiple_args_unexpected_extra_several_args(self):
self.assertCodeExecution("""
def myfunc(a, b):
return 16
print(myfunc(1, 2, 3))
""", exits_early=True)
def test_missing_sole_arg(self):
self.assertCodeExecution("""
def myfunc(a):
return 16
print(myfunc())
""", exits_early=True)
def test_missing_args_more_args(self):
self.assertCodeExecution("""
def otherfunc(a, b, c, d, e, f=3):
return 'ok'
print(otherfunc(1))
""", exits_early=True)
def test_missing_args_with_varargs(self):
self.assertCodeExecution("""
def myfunc(a, b, *c, d=3):
return 'ok'
print(myfunc(1))
""", exits_early=True)
def test_a_method_missing_args(self):
self.assertCodeExecution("""
class MyClass:
def a_method(self, a, b, c):
return 16
i = MyClass()
print(i.a_method())
""", exits_early=True)
def test_function_kwonly(self):
self.assertCodeExecution("""
def myfunc(*,x=100):
return x
print (myfunc())
""")
def test_function_try_except_return_no_exception(self):
self.assertCodeExecution("""
def myfunc(x):
try:
return x
except NameError:
return None
print(myfunc(10))
""")
def test_function_try_except_return_caught_exception(self):
self.assertCodeExecution("""
def myfunc(x):
try:
return y
except NameError:
return x
print(myfunc(10))
""")
def test_function_try_except_return_uncaught_exception(self):
self.assertCodeExecution("""
def myfunc(x):
try:
return z
except IndexError:
return x
print(myfunc(10))
""", exits_early=True)
def test_function_frozenset_constant(self):
self.assertCodeExecution("""
def func():
for i in {1, 2, 3, 4, 5, 6}:
print(i)
print('a' in {1, 'a', False, 1.1, b'1', (2)})
func()
""")