micropython/tests/misc/non_compliant.py

# tests for things that are not implemented, or have non-compliant behaviour

try:
    import uarray as array
    import ustruct
except ImportError:
    print("SKIP")
    raise SystemExit

# when super can't find self
try:
    exec('def f(): super()')
except SyntaxError:
    print('SyntaxError')

# store to exception attribute is not allowed
try:
    ValueError().x = 0
except AttributeError:
    print('AttributeError')

# array deletion not implemented
try:
    a = array.array('b', (1, 2, 3))
    del a[1]
except TypeError:
    print('TypeError')

# slice with step!=1 not implemented
try:
    a = array.array('b', (1, 2, 3))
    print(a[3:2:2])
except NotImplementedError:
    print('NotImplementedError')

# containment, looking for integer not implemented
try:
    print(1 in array.array('B', b'12'))
except NotImplementedError:
    print('NotImplementedError')

# uPy raises TypeError, shold be ValueError
try:
    '%c' % b'\x01\x02'
except (TypeError, ValueError):
    print('TypeError, ValueError')

# attributes/subscr not implemented
try:
    print('{a[0]}'.format(a=[1, 2]))
except NotImplementedError:
    print('NotImplementedError')

# str(...) with keywords not implemented
try:
    str(b'abc', encoding='utf8')
except NotImplementedError:
    print('NotImplementedError')

# str.rsplit(None, n) not implemented
try:
    'a a a'.rsplit(None, 1)
except NotImplementedError:
    print('NotImplementedError')

# str.endswith(s, start) not implemented
try:
    'abc'.endswith('c', 1)
except NotImplementedError:
    print('NotImplementedError')

# str subscr with step!=1 not implemented
try:
    print('abc'[1:2:3])
except NotImplementedError:
    print('NotImplementedError')

# bytes(...) with keywords not implemented
try:
    bytes('abc', encoding='utf8')
except NotImplementedError:
    print('NotImplementedError')

# bytes subscr with step!=1 not implemented
try:
    b'123'[0:3:2]
except NotImplementedError:
    print('NotImplementedError')

# tuple load with step!=1 not implemented
try:
    ()[2:3:4]
except NotImplementedError:
    print('NotImplementedError')

# list store with step!=1 not implemented
try:
    [][2:3:4] = []
except NotImplementedError:
    print('NotImplementedError')

# list delete with step!=1 not implemented
try:
    del [][2:3:4]
except NotImplementedError:
    print('NotImplementedError')

# struct pack with too many args, not checked by uPy
print(ustruct.pack('bb', 1, 2, 3))

# struct pack with too few args, not checked by uPy
print(ustruct.pack('bb', 1))

# array slice assignment with unsupported RHS
try:
    bytearray(4)[0:1] = [1, 2]
except NotImplementedError:
    print('NotImplementedError')

# can't assign attributes to a function
def f():
    pass
try:
    f.x = 1
except AttributeError:
    print('AttributeError')

# can't call a function type (ie make new instances of a function)
try:
    type(f)()
except TypeError:
    print('TypeError')

# test when object explicitly listed at not-last position in parent tuple
# this is not compliant with CPython because of illegal MRO
class A:
    def foo(self):
        print('A.foo')
class B(object, A):
    pass
B().foo()

# can't assign property (or other special accessors) to already-subclassed class
class A:
    pass
class B(A):
    pass
try:
    A.bar = property()
except AttributeError:
    print('AttributeError')