### Question:
UnsignedLongRangeConstraintEditor extends AbstractColumnConstraintEditor<BigInteger> { private static boolean hasValidValue(IntegerTextField field) { return field.getValue() != null; } UnsignedLongRangeConstraintEditor(ColumnConstraint<BigInteger> constraint); @Override void reset(); @Override String getErrorMessage();  }### Answer:
@Test public void testSetBigValue() { setEditorValue("[4, fffffffffffffffa]"); assertEquals("0x4", lowerField.getText()); assertEquals("0xfffffffffffffffa", upperField.getText()); assertTrue(editor.hasValidValue()); }