circuitpython/tests/micropython/const_error.py

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# make sure syntax error works correctly for bad const definition
from micropython import const
def test_syntax(code):
try:
exec(code)
except SyntaxError:
print("SyntaxError")
# argument not a constant
test_syntax("a = const(x)")
# redefined constant
test_syntax("A = const(1); A = const(2)")
# these operations are not supported within const
test_syntax("A = const(1 @ 2)")
test_syntax("A = const(1 / 2)")
test_syntax("A = const(1 ** 2)")
test_syntax("A = const(1 << -2)")
test_syntax("A = const(1 >> -2)")
test_syntax("A = const(1 % 0)")
test_syntax("A = const(1 // 0)")