### Question:
CheckParametersExpressionContainerValidator implements ConstraintValidator<CheckParametersExpressionContainer, Map<String, ClientExpressionContainer>>, ValidationErrorDescriptorBuilder { @Override public ErrorDescriptor build(ConstraintViolation violation) { return QUERY_WHERE_PARAMETERS_EXPRESSION_NOT_VALID.createDescriptor(); }  @Override void initialize(CheckParametersExpressionContainer constraintAnnotation); @Override boolean isValid(Map<String, ClientExpressionContainer> expressionMap, ConstraintValidatorContext context); @Override ErrorDescriptor build(ConstraintViolation violation);  }### Answer:
@Test public void build_success() { ConstraintViolation violation = mock(ConstraintViolation.class); ErrorDescriptor errorDescriptor = checkParametersExpressionContainerValidator.build(violation); assertEquals(new ErrorDescriptor().setErrorCode(QUERY_WHERE_PARAMETERS_EXPRESSION_NOT_VALID), errorDescriptor); }