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    • com.fitbur.assertj.internal.AbstractComparisonStrategy Maven / Gradle / Ivy

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    /**
 * 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.
 *
 * Copyright 2012-2016 the original author or authors.
 */
package com.fitbur.assertj.internal;

import static java.lang.reflect.Array.getLength;
import static java.util.Collections.EMPTY_SET;
import static com.fitbur.assertj.util.IterableUtil.isNullOrEmpty;

import java.lang.reflect.Array;
import java.util.Set;

/**
 * Base implementation of {@link ComparisonStrategy} contract.
 * 
 * @author Joel Costigliola
 */
public abstract class AbstractComparisonStrategy implements ComparisonStrategy {

  @Override
  public Iterable duplicatesFrom(Iterable iterable) {
	if (isNullOrEmpty(iterable)) return EMPTY_SET;

	Set duplicates = newSetUsingComparisonStrategy();
	Set noDuplicates = newSetUsingComparisonStrategy();
	for (Object element : iterable) {
	  if (noDuplicates.contains(element)) {
		duplicates.add(element);
	  } else {
		noDuplicates.add(element);
	  }
	}
	return duplicates;
  }

  /**
   * Returns a {@link Set} honoring the comparison strategy used.
   * 
   * @return a {@link Set} honoring the comparison strategy used.
   */
  protected abstract Set newSetUsingComparisonStrategy();

  @Override
  public boolean arrayContains(Object array, Object value) {
	for (int i = 0; i < getLength(array); i++) {
	  Object element = Array.get(array, i);
	  if (areEqual(element, value)) {
		return true;
	  }
	}
	return false;
  }

  @Override
  public boolean isLessThan(Object actual, Object other) {
	if (areEqual(actual, other)) {
	  return false;
	}
	return !isGreaterThan(actual, other);
  }

  @Override
  public boolean isLessThanOrEqualTo(Object actual, Object other) {
	if (areEqual(actual, other)) {
	  return true;
	}
	return isLessThan(actual, other);
  }

  @Override
  public boolean isGreaterThanOrEqualTo(Object actual, Object other) {
	if (areEqual(actual, other)) {
	  return true;
	}
	return isGreaterThan(actual, other);
  }

  public abstract String asText();
  
  @Override
  public boolean isStandard() {
    return false;
  }
  
}
    
    
    
    

    




    
    
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