def test_config_latching(type_name, data, python_type, latched_value):
"""Make sure we can properly decode variables."""
print("Testing config latching of type %s with data %s" % (type_name, repr(data)))
desc = ConfigDescriptor(0x8000, type_name, python_type=python_type)
desc.update_value(0, data)
actual_latched = desc.latch()
assert actual_latched == latched_value
def test_unsupported_type():
"""Make sure we throw en error if we have an unknown python type."""
with pytest.raises(ArgumentError):
desc = ConfigDescriptor(0x8000,
'uint8_t',
default=b'\0',
python_type="unsupported")
def test_nonnull_string():
"""Make sure we throw an exception for non-null terminated strings."""
desc = ConfigDescriptor(0x8000, 'char[16]', python_type='string')
desc.update_value(0, b'test string')
with pytest.raises(DataError):
desc.latch()
def test_default_values(type_name, default_value, latched_value, python_type, expected_exc):
"""Make sure we can properly convert default values to binary."""
desc = ConfigDescriptor(0x8000, type_name, default_value, python_type=python_type)
desc.clear()
if expected_exc is not None:
with pytest.raises(expected_exc):
desc.latch()
else:
assert desc.latch() == latched_value
def test_empty():
"""Make sure we throw en error if we latch an empty config var."""
desc = ConfigDescriptor(0x8000, 'uint8_t')
with pytest.raises(DataError):
desc.latch()
def test_bool_conversion():
"""Make sure we can convert to bool."""
desc = ConfigDescriptor(0x8000, 'uint8_t', 0, python_type='bool')
desc.clear()
assert desc.latch() is False
desc = ConfigDescriptor(0x8000, 'uint8_t', 1, python_type='bool')
desc.clear()
assert desc.latch() is True
with pytest.raises(ArgumentError):
desc = ConfigDescriptor(0x8000, 'uint8_t[2]', 0, python_type='bool')