juneau-core/juneau-core-utest/src/test/java/org/apache/juneau/reflection/AnnotationInfoTest.java

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package org.apache.juneau.reflection;

import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.*;
import static org.junit.Assert.*;

import java.lang.annotation.*;
import java.util.function.*;

import org.apache.juneau.reflect.*;
import org.junit.*;

public class AnnotationInfoTest {

	private static void check(String expected, Object o) {
		assertEquals(expected, TO_STRING.apply(o));
	}

	private static final Function<Object,String> TO_STRING = new Function<Object,String>() {
		@Override
		public String apply(Object t) {
			if (t instanceof A)
				return "@A(" + ((A)t).value() + ")";
			if (t instanceof ClassInfo)
				return ((ClassInfo)t).getSimpleName();
			return t.toString();
		}
	};

	private static ClassInfo of(Class<?> c) {
		try {
			return ClassInfo.of(c);
		} catch (SecurityException e) {
			fail(e.getLocalizedMessage());
		}
		return null;
	}

	//-----------------------------------------------------------------------------------------------------------------
	// Instantiation.
	//-----------------------------------------------------------------------------------------------------------------

	@Documented
	@Target(TYPE)
	@Retention(RUNTIME)
	@Inherited
	public static @interface A {
		int value();
	}

	@A(1)
	static class B {}
	static ClassInfo b = of(B.class);

	@Test
	public void getClassOn() {
		check("B", b.getAnnotationInfos(A.class).get(0).getClassOn());
	}

	@Test
	public void getAnnotation() {
		check("@A(1)", b.getAnnotationInfos(A.class).get(0).getAnnotation());
	}
}