Matchers.java 文件源码

/**
 * A reimplementation of hamcrest's isA() but without the broken generics.
 */
@Factory
public static Matcher<Object> isA(final Class<?> type) {
    return new BaseMatcher<Object>() {
        public boolean matches(Object item) {
            return type.isInstance(item);
        }

        public void describeTo(Description description) {
            description.appendText("instanceof ").appendValue(type);
        }
    };
}