circuitpython/tests/micropython/viper_error.py
David Lechner 3dc324d3f1 tests: Format all Python code with black, except tests in basics subdir.
This adds the Python files in the tests/ directory to be formatted with
./tools/codeformat.py.  The basics/ subdirectory is excluded for now so we
aren't changing too much at once.

In a few places `# fmt: off`/`# fmt: on` was used where the code had
special formatting for readability or where the test was actually testing
the specific formatting.
2020-03-30 13:21:58 +11:00

87 lines
1.9 KiB
Python

# test syntax and type errors specific to viper code generation
def test(code):
try:
exec(code)
except (SyntaxError, ViperTypeError, NotImplementedError) as e:
print(repr(e))
# viper: annotations must be identifiers
test("@micropython.viper\ndef f(a:1): pass")
test("@micropython.viper\ndef f() -> 1: pass")
# unknown type
test("@micropython.viper\ndef f(x:unknown_type): pass")
# local used before type known
test(
"""
@micropython.viper
def f():
print(x)
x = 1
"""
)
# type mismatch storing to local
test(
"""
@micropython.viper
def f():
x = 1
y = []
x = y
"""
)
# can't implicitly convert type to bool
test(
"""
@micropython.viper
def f():
x = ptr(0)
if x:
pass
"""
)
# incorrect return type
test("@micropython.viper\ndef f() -> int: return []")
# can't do binary op between incompatible types
test("@micropython.viper\ndef f(): 1 + []")
# can't load
test("@micropython.viper\ndef f(): 1[0]")
test("@micropython.viper\ndef f(): 1[x]")
# can't store
test("@micropython.viper\ndef f(): 1[0] = 1")
test("@micropython.viper\ndef f(): 1[x] = 1")
test("@micropython.viper\ndef f(x:int): x[0] = x")
test("@micropython.viper\ndef f(x:ptr32): x[0] = None")
test("@micropython.viper\ndef f(x:ptr32): x[x] = None")
# must raise an object
test("@micropython.viper\ndef f(): raise 1")
# unary ops not implemented
test("@micropython.viper\ndef f(x:int): +x")
test("@micropython.viper\ndef f(x:int): -x")
test("@micropython.viper\ndef f(x:int): ~x")
# binary op not implemented
test("@micropython.viper\ndef f(x:int): res = x in x")
# yield (from) not implemented
test("@micropython.viper\ndef f(): yield")
test("@micropython.viper\ndef f(): yield from f")
# passing a ptr to a Python function not implemented
test("@micropython.viper\ndef f(): print(ptr(1))")
# cast of a casting identifier not implemented
test("@micropython.viper\ndef f(): int(int)")