/*
 * Copyright 2010 Google Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.google.gwt.validation.client.impl;

import com.google.gwt.validation.client.AbstractGwtValidatorFactory;
import com.google.gwt.validation.client.GwtConstraintValidatorFactory;
import com.google.gwt.validation.client.GwtMessageInterpolator;
import com.google.gwt.validation.client.GwtTraversableResolver;
import com.google.gwt.validation.client.ValidationClientGwtTestCase;

import java.util.Set;

import javax.validation.ConstraintValidatorFactory;
import javax.validation.ConstraintViolation;
import javax.validation.MessageInterpolator;
import javax.validation.TraversableResolver;
import javax.validation.ValidationException;
import javax.validation.ValidatorContext;
import javax.validation.ValidatorFactory;
import javax.validation.metadata.BeanDescriptor;

/**
 * Tests for {@link GwtValidatorContext}.
 */
public class GwtValidatorContextTest extends ValidationClientGwtTestCase {

  private final class DummyGwtValidatorFactory extends
      AbstractGwtValidatorFactory {
    @Override
    public AbstractGwtValidator createValidator() {
      return new DummyValidator();
    }
  }

  private static class DummyValidator extends AbstractGwtValidator {
    @Override
    public BeanDescriptor getConstraintsForClass(Class<?> clazz) {
      throw new UnsupportedOperationException();
    }

    @Override
    public <T> Set<ConstraintViolation<T>> validate(
        GwtValidationContext<T> context, Object object, Class<?>... groups)
        throws ValidationException {
      throw new UnsupportedOperationException();
    }

    @Override
    public <T> Set<ConstraintViolation<T>> validate(T object,
        Class<?>... groups) {
      throw new UnsupportedOperationException();
    }

    @Override
    public <T> Set<ConstraintViolation<T>> validateProperty(T object,
        String propertyName, Class<?>... groups) {
      throw new UnsupportedOperationException();
    }

    @Override
    public <T> Set<ConstraintViolation<T>> validateValue(Class<T> beanType,
        String propertyName, Object value, Class<?>... groups) {
      throw new UnsupportedOperationException();
    }

    @Override
    protected ConstraintValidatorFactory getConstraintValidatorFactory() {
      return super.getConstraintValidatorFactory();
    }

    @Override
    protected MessageInterpolator getMessageInterpolator() {
      return super.getMessageInterpolator();
    }

    @Override
    protected TraversableResolver getTraversableResolver() {
      return super.getTraversableResolver();
    }
  }

  private ValidatorFactory validatorFactory;
  private ValidatorContext validatorContext;

  public void testCustom() throws Exception {
    final TraversableResolver traversableResolver = new GwtTraversableResolver();
    final ConstraintValidatorFactory constraintValidatorFactory = new GwtConstraintValidatorFactory();
    final MessageInterpolator messageInterpolator = new GwtMessageInterpolator();

    validatorContext.constraintValidatorFactory(constraintValidatorFactory)
        .messageInterpolator(messageInterpolator)
        .traversableResolver(traversableResolver);

    assertContext(traversableResolver, constraintValidatorFactory,
        messageInterpolator);
  }

  public void testDefault() throws Exception {
    assertContext(validatorFactory.getTraversableResolver(), //
        validatorFactory.getConstraintValidatorFactory(), //
        validatorFactory.getMessageInterpolator());
  }

  public void testNull() throws Exception {
    validatorContext.constraintValidatorFactory(null) //
        .messageInterpolator(null) //
        .traversableResolver(null);

    assertContext(validatorFactory.getTraversableResolver(), //
        validatorFactory.getConstraintValidatorFactory(), //
        validatorFactory.getMessageInterpolator());
  }

  public void testReset() throws Exception {
    final TraversableResolver traversableResolver = new GwtTraversableResolver();
    final ConstraintValidatorFactory constraintValidatorFactory = new GwtConstraintValidatorFactory();
    final MessageInterpolator messageInterpolator = new GwtMessageInterpolator();

    validatorContext.constraintValidatorFactory(constraintValidatorFactory)
        .messageInterpolator(messageInterpolator)
        .traversableResolver(traversableResolver);

    validatorContext.constraintValidatorFactory(null) //
        .messageInterpolator(null) //
        .traversableResolver(null);

    assertContext(validatorFactory.getTraversableResolver(), //
        validatorFactory.getConstraintValidatorFactory(), //
        validatorFactory.getMessageInterpolator());
  }

  @Override
  protected void gwtSetUp() throws Exception {
    super.gwtSetUp();
    validatorFactory = new DummyGwtValidatorFactory();
    validatorContext = validatorFactory.usingContext();
  }

  private void assertContext(final TraversableResolver traversableResolver,
      final ConstraintValidatorFactory constraintValidatorFactory,
      final MessageInterpolator messageInterpolator) {
    final DummyValidator validator = getDummyValidatorFromContext();
    assertSame(messageInterpolator, validator.getMessageInterpolator());
    assertSame(constraintValidatorFactory,
        validator.getConstraintValidatorFactory());
    assertSame(traversableResolver, validator.getTraversableResolver());
  }

  private DummyValidator getDummyValidatorFromContext() {
    return ((DummyValidator) validatorContext.getValidator());
  }

}