def __init__(self, parent: QListWidget, id_no: int, text: str):
"""
A custom widget used for acting as a template in the pixel mapping list. Consists of a label and an input box.
:param parent: The QListWidget that will contain this list item.
:param id_no: The "temporary" ID number based on the number of faces in the mesh/number of cylinders. Used
to distinguish elements in the list but doesn't define the actual IDs that are saved upon clicking Add Component.
:param text: The text that appears in the list widget. Will be either "cylinder" or "face."
"""
super().__init__(parent)
self.pixelIDLabel = QLabel()
self.pixelIDLineEdit = QLineEdit()
# Create the label text based on the face number
self.pixelIDLabel.setText("Pixel ID for " + text + " #" + str(id_no) +
":")
# Give the line edit a validator that requires values of zero or greater
self.pixelIDLineEdit.setValidator(NullableIntValidator(bottom=0))
self.layout = QHBoxLayout()
self.layout.addWidget(self.pixelIDLabel)
self.layout.addWidget(self.pixelIDLineEdit)
self.setLayout(self.layout)
def test_GIVEN_integer_WHEN_using_nullable_int_validator_THEN_returns_acceptable():
validator = NullableIntValidator()
assert validator.validate("5", 0)[0] == QValidator.State.Acceptable
def test_GIVEN_nonemptry_string_WHEN_using_nullable_int_validator_THEN_returns_invalid(
invalid_input,
):
validator = NullableIntValidator()
assert validator.validate(invalid_input, 0)[0] == QValidator.State.Invalid
def test_GIVEN_empty_string_WHEN_using_nullable_int_validator_THEN_returns_acceptable():
validator = NullableIntValidator()
assert validator.validate("", 0) == QValidator.Acceptable