circuitpython/tests/basics/fun_error.py

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# test errors from bad function calls
def test_exc(code, exc):
try:
exec(code)
print("no exception")
except exc:
print("right exception")
except:
print("wrong exception")
# function doesn't take keyword args
test_exc("[].append(x=1)", TypeError)
# function with variable number of positional args given too few
test_exc("round()", TypeError)
# function with variable number of positional args given too many
test_exc("round(1, 2, 3)", TypeError)
# function with fixed number of positional args given wrong number
test_exc("[].append(1, 2)", TypeError)
# function with keyword args given extra positional args
test_exc("[].sort(1)", TypeError)
# function with keyword args given extra keyword args
test_exc("[].sort(noexist=1)", TypeError)
# kw given for positional, but a different positional is missing
test_exc("def f(x, y): pass\nf(x=1)", TypeError)