### Question:
DataTypeConstraintExpression implements DataTypeConstraintComponent { @Override public void setValue(final String value) { view.setExpressionValue(value); } @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 testSetValue() { final String expression = "expression"; constraintExpression.setValue(expression); verify(view).setExpressionValue(expression); }