micropython/tests/extmod/machine1.py

# test machine module

try:
    import machine

    machine.mem8
except:
    print("SKIP")
    raise SystemExit

import unittest


class Test(unittest.TestCase):
    def test_mem8_print(self):
        self.assertEqual(repr(machine.mem8), "<8-bit memory>")

    def test_alignment(self):
        with self.assertRaises(ValueError):
            machine.mem16[1]

        with self.assertRaises(ValueError):
            machine.mem16[1] = 1

    def test_operations(self):
        with self.assertRaises(TypeError):
            del machine.mem8[0]

        with self.assertRaises(TypeError):
            machine.mem8[0:1]

        with self.assertRaises(TypeError):
            machine.mem8[0:1] = 10

        with self.assertRaises(TypeError):
            machine.mem8["hello"]

        with self.assertRaises(TypeError):
            machine.mem8["hello"] = 10


if __name__ == "__main__":
    unittest.main()