### Question:
DataTypeConstraintExpression implements DataTypeConstraintComponent { @PostConstruct void setup() { view.init(this); } @Inject  DataTypeConstraintExpression(final View view,
                                        final ConstraintPlaceholderHelper placeholderHelper); @Override String getValue(); @Override void setValue(final String value); @Override void setConstraintValueType(final String constraintValueType); @Override Element getElement();  }### Answer:
@Test public void testSetup() { constraintExpression.setup(); verify(view).init(constraintExpression); }