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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)")