LinkMatcher.java

package org.test4j.hamcrest.matcher;

import java.util.ArrayList;
import java.util.List;

import ext.test4j.hamcrest.BaseMatcher;
import ext.test4j.hamcrest.Description;
import ext.test4j.hamcrest.Matcher;

import org.test4j.tools.commons.StringHelper;

@SuppressWarnings("rawtypes")
public class LinkMatcher<T> extends BaseMatcher<T> {
	private final List<MessageMatcher> matchers = new ArrayList<MessageMatcher>();

	public void add(Matcher<?> matcher) {
		this.add(null, matcher);
	}

	public void add(String message, Matcher<?> matcher) {
		if (matcher instanceof MessageMatcher) {
			this.matchers.add((MessageMatcher) matcher);
		} else {
			this.matchers.add(new MessageMatcher(message, matcher));
		}
	}

	public boolean matches(Object obj) {
		for (Matcher<?> matcher : matchers) {
			if (!matcher.matches(obj)) {
				return false;
			}
		}
		return true;
	}

	public void describeTo(Description description) {
		description.appendList("(", " and ", ")", matchers);
	}

	private static class MessageMatcher extends BaseMatcher {
		private Matcher<?> matcher;

		private String message;

		private Object actual;

		public MessageMatcher(String message, Matcher<?> matcher) {
			this.matcher = matcher;
			this.message = message;
		}

		public boolean matches(Object item) {
			this.actual = item;
			return this.matcher.matches(item);
		}

		public void describeTo(Description description) {
			if (StringHelper.isBlankOrNull(message)) {
				this.matcher.describeTo(description);
			} else {
				description.appendText(message) /** <br> */
				.appendText("\nExpected: ")/** <br> */
				.appendDescriptionOf(matcher)/** <br> */
				.appendText("\n     got: ")/** <br> */
				.appendValue(this.actual)/** <br> */
				.appendText("\n");
			}
		}
	}
}