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package org.junit.internal.matchers;
import org.hamcrest.Description;
import org.hamcrest.Factory;
import org.hamcrest.Matcher;
import org.hamcrest.TypeSafeMatcher;
public class ThrowableMessageMatcher<T extends Throwable> extends
TypeSafeMatcher<T> {
private final Matcher<String> matcher;
public ThrowableMessageMatcher(Matcher<String> matcher) {
this.matcher = matcher;
}
public void describeTo(Description description) {
description.appendText("exception with message ");
description.appendDescriptionOf(matcher);
}
@Override
protected boolean matchesSafely(T item) {
return matcher.matches(item.getMessage());
}
@Override
protected void describeMismatchSafely(T item, Description description) {
description.appendText("message ");
matcher.describeMismatch(item.getMessage(), description);
}
@Factory
public static <T extends Throwable> Matcher<T> hasMessage(final Matcher<String> matcher) {
return new ThrowableMessageMatcher<T>(matcher);
}
}
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