654 lines
20 KiB
Java
654 lines
20 KiB
Java
/*
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* Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 4891872
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* @summary Some tests for the generic core reflection api.
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* @author Gilad Bracha
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* @compile TestC2.java
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* @run main/othervm -ea TestC2
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*/
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import java.lang.reflect.*;
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abstract class C0<T> {
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public T ft;
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public C0<T> fc1t;
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public C0 fc1;
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public C0(){}
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public C0(T t) {}
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public abstract C0<T> mc1t(T t, C0<T> c1t, C0 c1);
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public abstract C0 mc1();
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public abstract T mt(T t);
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}
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interface I1<X1, X2> extends I3 {
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X1 foo(X2 x2);
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}
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interface I2<E1, E2 extends Throwable, E3> {
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E1 bar(E3 e3) throws E2;
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}
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interface I3 {
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}
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abstract class C2<T1 extends C2<T1, T2, T3>, T2 extends C0<T2>,
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T3 extends Throwable>
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extends C0<T1>
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implements I1<T1, T2>, I2<T1, T3, T2>, I3
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{
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public T1 ft;
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public C0<String> fc1t;
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public C0 fc1;
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public int fi;
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public C2(T2 t2) {}
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public <T> C2(T t) {}
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public <T1, T2, T3, T4> C2(T1 t1, T2 t2, T4 t4) {}
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public C2() throws T3 {}
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public abstract <T> C0<T> mc1t(T3 t3, C0<T> c1t, C0 c1);
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public abstract <E, R> C0 mc1(E e);
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public abstract T1 mt(T2 t);
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}
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public class TestC2 {
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static Class<C2> cls = C2.class;
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public static void main(String[] args) throws Throwable {
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testSuperclass();
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testSuperInterfaces();
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testTypeParameters();
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testMethods();
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testConstructors();
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testFields();
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}
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static void testSuperclass() {
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System.out.println("testing superclass");
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Type sc = cls.getGenericSuperclass();
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assert
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sc instanceof ParameterizedType :
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"Superclass of C2 should be a parameterized type";
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ParameterizedType psc = (ParameterizedType) sc;
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assert
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((psc.getRawType() == C0.class) ) :
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"The raw generic superclass of C2 should be C0";
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Type[] tas = psc.getActualTypeArguments();
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assert
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tas.length == 1 :
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"Superclass of C2 should have one type argument";
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Type t = tas[0];
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assert
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t instanceof TypeVariable :
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"Type argument to superclass of C2 should be a type variable";
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TypeVariable tv = (TypeVariable) t;
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assert
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tv.getName().equals("T1") :
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"Name of type argument to superclass of C2 should be T1";
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Type[] bs = tv.getBounds();
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assert
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bs.length == 1 :
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"T1 has one bound (superclass)";
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t = bs[0];
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assert
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t instanceof ParameterizedType :
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"Bound of C0 should be a parameterized type";
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ParameterizedType pt = (ParameterizedType) t;
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assert
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((pt.getRawType() == C2.class) ) :
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"The raw bound of T1 should be C2";
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tas = pt.getActualTypeArguments();
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assert
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tas.length == 3 :
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"Bound of T1 should have three type arguments";
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assert
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tas[0] instanceof TypeVariable :
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"First argument to bound of T1 is a type variable";
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assert
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tas[1] instanceof TypeVariable :
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"Second argument to bound of T1 is a type variable";
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assert
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tas[2] instanceof TypeVariable :
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"Third argument to bound of T1 is a type variable";
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TypeVariable tv1 = (TypeVariable) tas[0];
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TypeVariable tv2 = (TypeVariable) tas[1];
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TypeVariable tv3 = (TypeVariable) tas[2];
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assert
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tv1.getName().equals("T1"):
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"First type arg to bound of T1 is T1";
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assert
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tv2.getName().equals("T2"):
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"Seconmd type arg to bound of T1 is T2";
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assert
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tv3.getName().equals("T3"):
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"Third type arg to bound of T1 is T3";
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}
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static void testSuperInterfaces() {
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System.out.println("testing superinterfaces");
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Type[] sis = cls.getGenericInterfaces();
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assert
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((sis.length == 3)):
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"C2 should have three generic superinterfaces";
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Type t = sis[0];
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assert
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t instanceof ParameterizedType :
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"First superinterface of C2 should be a parameterized type";
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ParameterizedType pt = (ParameterizedType) t;
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assert
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pt.getRawType() == I1.class :
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"First super interface of C2 is instantiation of I1";
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Type[] tas = pt.getActualTypeArguments();
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assert
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tas.length == 2 :
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"First super interface of C2 has 2 type arguments";
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t = sis[1];
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assert
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t instanceof ParameterizedType :
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"Second superinterface of C2 should be a parameterized type";
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pt = (ParameterizedType) t;
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assert
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pt.getRawType() == I2.class :
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"Second super interface of C2 is instantiation of I2";
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tas = pt.getActualTypeArguments();
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assert
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tas.length == 3 :
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"Second super interface of C2 has 3 type arguments";
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t = sis[2];
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assert
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t == I3.class :
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"Third superinterface of C2 is I3";
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// Test interfaces themselves
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TypeVariable[] tvs = I1.class.getTypeParameters();
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assert
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tvs.length == 2 :
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"I3 has two formal type parameters";
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assert
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tvs[0].getName().equals("X1") :
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"Name of first formal type arg of I1 is X1";
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assert
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tvs[1].getName().equals("X2") :
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"Name of second formal type arg of I1 is X2";
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assert
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I1.class.getGenericSuperclass() == I1.class.getSuperclass() :
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"The generic and non-generic superclasses of an interface must be the same";
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sis = I1.class.getGenericInterfaces();
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assert
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sis.length == 1 :
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"I1 has one generic superinterface";
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assert
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sis[0] == I3.class :
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"Superinterface of I1 is I3";
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tvs = I2.class.getTypeParameters();
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assert
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tvs.length == 3 :
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"I3 has three formal type parameters";
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assert
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tvs[0].getName().equals("E1") :
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"Name of first formal type arg of I2 is E1";
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assert
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tvs[1].getName().equals("E2") :
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"Name of second formal type arg of I2 is E2";
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assert
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tvs[2].getName().equals("E3") :
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"Name of third formal type arg of I2 is E3";
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assert
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I2.class.getGenericSuperclass() == I2.class.getSuperclass() :
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"The generic and non-generic superclasses of an interface must be the same";
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tvs = I3.class.getTypeParameters();
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assert
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tvs.length == 0 :
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"I3 has no formal type parameters";
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assert
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I3.class.getGenericSuperclass() == I3.class.getSuperclass() :
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"The generic and non-generic superclasses of an interface must be the same";
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}
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static void testTypeParameters() {
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System.out.println("testing type parameters");
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TypeVariable[] tvs = cls.getTypeParameters();
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assert
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tvs.length == 3 :
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"C2 should have three type parameters";
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TypeVariable tv = tvs[0];
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Type[] bs = tv.getBounds();
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assert
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bs.length == 1 :
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"T1 should have one bound";
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assert
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bs[0] instanceof ParameterizedType :
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"The bound of T1 should be a parameterized type";
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tv = tvs[1];
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bs = tv.getBounds();
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assert
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bs.length == 1 :
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"T2 should have one bound";
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assert
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bs[0] instanceof ParameterizedType :
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"The bound of T2 should be a parameterized type";
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tv = tvs[2];
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bs = tv.getBounds();
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assert
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bs.length == 1 :
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"T3 should have one bound";
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assert
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bs[0] == Throwable.class :
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"The bound of T3 should be Throwable";
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}
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static void testMethods() throws NoSuchMethodException {
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System.out.println("testing methods");
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Class[] params1 = new Class[3];
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params1[0] = Throwable.class;
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params1[1] = C0.class;
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params1[2] = C0.class;
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Class[] params2 = new Class[1];
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params2[0] = Object.class;
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Class[] params3 = new Class[1];
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params3[0] = C0.class;
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Method mc1t = cls.getMethod("mc1t", params1);
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Method mc1 = cls.getMethod("mc1", params2);
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Method mt = cls.getMethod("mt", params3);
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Type rt_mc1t = mc1t.getGenericReturnType();
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assert
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rt_mc1t instanceof ParameterizedType :
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"The return type of mc1t should be a parameterized type";
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ParameterizedType pt = (ParameterizedType) rt_mc1t;
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assert
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pt.getRawType() == C0.class :
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"The raw return type of mc1t should be C0";
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Type[] tas = pt.getActualTypeArguments();
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assert
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tas.length == 1 :
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"Return type of mc1t should have one type argument";
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assert
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tas[0] instanceof TypeVariable :
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"Type argument of return type of mc1t is a type variable";
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Type rt_mc1 = mc1.getGenericReturnType();
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assert
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rt_mc1 == C0.class :
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"Return type of mc1 is C0";
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Type rt_mt = mt.getGenericReturnType();
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assert
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rt_mt instanceof TypeVariable :
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"Return type of mt is a type variable";
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Type[] pt_mc1t = mc1t.getGenericParameterTypes();
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assert
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pt_mc1t.length == 3 :
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"C0.mc1t has three parameters";
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Type p1_mc1t = pt_mc1t[0];
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assert p1_mc1t != null;
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assert
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p1_mc1t instanceof TypeVariable :
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"Generic type of the 1st parameter of mc1t(T) is a type variable";
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TypeVariable tv = (TypeVariable) p1_mc1t;
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assert
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tv.getName().equals("T3") :
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"Name of 1st type parameter of mc1t is T3, not " + tv.getName();
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Type[] bs = tv.getBounds();
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assert
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bs.length == 1 :
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"T3 should have one bound (mc1t)";
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assert
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bs[0] == Throwable.class :
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"The bound of T3 should be Throwable(mc1t)";
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Type p2_mc1t = pt_mc1t[1];
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assert
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p2_mc1t instanceof ParameterizedType :
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"The type of parameter 2 of mc1t is a parameterized type";
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pt = (ParameterizedType) p2_mc1t;
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assert
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pt.getRawType() == C0.class :
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"Type of parameter 2 of mc1t is instantiation of C0";
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assert
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pt.getOwnerType() == null :
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"Type of parameter 2 of mc1t is has null owner";
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tas = pt.getActualTypeArguments();
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assert
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tas.length == 1 :
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"The type of parameter 2 of mc1t has one type argument";
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Type ta = tas[0];
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assert
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ta instanceof TypeVariable :
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"The actual type arg of C0<T> is a type variable (mc1t)";
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tv = (TypeVariable) ta;
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assert
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tv.getName().equals("T") :
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"mc1t: Name of the type arg of C0<T> is T, not " + tv.getName();
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bs = tv.getBounds();
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assert
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bs.length == 1 :
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"mc1t: The type argument of C0<T> should have one bound";
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assert
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bs[0] == Object.class :
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"mc1t: The bound of the type arg of C0<T> should be Object";
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Type p3_mc1t = pt_mc1t[2];
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assert
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p3_mc1t == C0.class :
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"Type of parameter 3 of mc1t is C0";
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Type[] pt_mc1 = mc1.getGenericParameterTypes();
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assert
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pt_mc1.length == 1 :
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"C2.mc1 has one parameter";
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Type[] pt_mt = mt.getGenericParameterTypes();
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assert
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pt_mt.length == 1 :
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"C2.mt has one parameter";
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Type p_mt = pt_mt[0];
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assert
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p_mt instanceof TypeVariable :
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"The generic type of the parameter of mt(T) is a type variable";
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tv = (TypeVariable) p_mt;
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assert
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tv.getName().equals("T2") :
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"The name of the type parameter of mt is T2, not " + tv.getName();
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bs = tv.getBounds();
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assert
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bs.length == 1 :
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"T2 should have one bound";
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assert
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bs[0] instanceof ParameterizedType:
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"The bound of T2 should be parameterized type";
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Type[] et_mc1t = mc1t.getGenericExceptionTypes();
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assert
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et_mc1t.length == 0 :
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"Method C0.mc1t should have no generic exception types";
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Type[] et_mc1 = mc1.getGenericExceptionTypes();
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assert
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et_mc1.length == 0 :
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"Method C0.mc1 should have no generic exception types";
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Type[] et_mt = mt.getGenericExceptionTypes();
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assert
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et_mt.length == 0 :
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"Method C0.mt should have no generic exception types";
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TypeVariable[] tv_mc1t = mc1t.getTypeParameters();
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assert
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tv_mc1t.length == 1 :
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"Method C2.mc1t should have one type parameter";
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TypeVariable[] tv_mc1 = mc1.getTypeParameters();
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assert
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tv_mc1.length == 2 :
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"Method C2.mc1 should have two type parameters";
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TypeVariable[] tv_mt = mt.getTypeParameters();
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assert
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tv_mt.length == 0 :
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"Method C2.mt should have no type parameters";
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}
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static void testFields() throws NoSuchFieldException{
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System.out.println("testing fields");
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Field ft = cls. getField("ft");
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Field fc1t = cls. getField("fc1t");
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Field fc1 = cls. getField("fc1");
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Field fi = cls. getField("fi");
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Type gt_ft = ft.getGenericType();
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assert
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gt_ft instanceof TypeVariable :
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"The generic type of C0.ft is a type variable";
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TypeVariable tv = (TypeVariable) gt_ft;
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assert
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tv.getName().equals("T1") :
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"The name of the type of ft is T1, not " + tv.getName();
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Type[] bs = tv.getBounds();
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assert
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bs.length == 1 :
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"The type of ft should have one bound";
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Type gt_fc1t = fc1t.getGenericType();
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assert
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gt_fc1t instanceof ParameterizedType :
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"The generic type of C0.fc1t is a parameterized type";
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ParameterizedType pt = (ParameterizedType) gt_fc1t;
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assert
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pt.getRawType() == C0.class :
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"Type of C2.fc1t is an instantiation of C0";
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assert
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pt.getOwnerType() == null :
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"Type of C2.fc1t is has null owner";
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Type[] tas = pt.getActualTypeArguments();
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assert
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tas.length == 1 :
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"The type of fc1t has one type argument";
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Type ta = tas[0];
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assert
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ta == String.class :
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"The actual type arg of C0<String> is String";
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Type gt_fc1 = fc1.getGenericType();
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assert
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gt_fc1 == C0.class :
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" Type of C2.fc1 should be C0";
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Type gt_fi = fi.getGenericType();
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assert
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gt_fi == int.class:
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" Type of C2.fi should be int";
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}
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static void testConstructors() throws NoSuchMethodException {
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System.out.println("testing constructors");
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Class[] params1 = new Class[1];
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params1[0] = C0.class;
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Constructor<C2> con = cls.getDeclaredConstructor(params1);
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Type[] pt_con = con.getGenericParameterTypes();
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assert
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pt_con.length == 1 :
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"Constructor C0(T) should have one generic parameter type";
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Type pt = pt_con[0];
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assert
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pt instanceof TypeVariable :
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"The generic type of the parameter of C0(T2) is a type variable";
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TypeVariable tv = (TypeVariable) pt;
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assert
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|
tv.getName().equals("T2") :
|
|
"The name of the type parameter of C2 is T2, not " + tv.getName();
|
|
Type[] bs = tv.getBounds();
|
|
assert
|
|
bs.length == 1 :
|
|
"T should have one bound";
|
|
|
|
|
|
Type[] et_con = con.getGenericExceptionTypes();
|
|
assert
|
|
et_con.length == 0 :
|
|
"Constructor C2(T2) should have no generic exception types";
|
|
|
|
TypeVariable[] tv_con = con.getTypeParameters();
|
|
assert
|
|
tv_con.length == 0 :
|
|
"Constructor C2(T2) should have no type parameters";
|
|
|
|
|
|
Class[] params2 = new Class[1];
|
|
params2[0] = Object.class;
|
|
con = cls.getDeclaredConstructor(params2);
|
|
|
|
pt_con = con.getGenericParameterTypes();
|
|
assert
|
|
pt_con.length == 1 :
|
|
"Constructor C0(T) should have one generic parameter type";
|
|
pt = pt_con[0];
|
|
assert
|
|
pt instanceof TypeVariable :
|
|
"The generic type of the parameter of C2(T) is a type variable";
|
|
tv = (TypeVariable) pt;
|
|
assert
|
|
tv.getName().equals("T") :
|
|
"The name of the type parameter of C2 is T, not " + tv.getName();
|
|
bs = tv.getBounds();
|
|
assert
|
|
bs.length == 1 :
|
|
"T should have one bound";
|
|
|
|
|
|
et_con = con.getGenericExceptionTypes();
|
|
assert
|
|
et_con.length == 0 :
|
|
"Constructor C2(T) should have no generic exception types";
|
|
|
|
tv_con = con.getTypeParameters();
|
|
assert
|
|
tv_con.length == 1 :
|
|
"Constructor C2(T) should have one type parameter";
|
|
|
|
Class[] params3 = new Class[3];
|
|
params3[0] = Object.class;
|
|
params3[1] = Object.class;
|
|
params3[2] = Object.class;
|
|
|
|
con = cls.getDeclaredConstructor(params3);
|
|
|
|
pt_con = con.getGenericParameterTypes();
|
|
assert
|
|
pt_con.length == 3 :
|
|
"Constructor C2(T1,T2,T4) should have three generic parameter types";
|
|
pt = pt_con[0];
|
|
assert
|
|
pt instanceof TypeVariable :
|
|
"The generic type of the first parameter of C2(T1,T2,T4) is a type variable";
|
|
tv = (TypeVariable) pt;
|
|
assert
|
|
tv.getName().equals("T1") :
|
|
"The name of the type parameter of C2(T1,T2,T4) is T1, not " + tv.getName();
|
|
bs = tv.getBounds();
|
|
assert
|
|
bs.length == 1 :
|
|
"T should have one bound";
|
|
|
|
|
|
et_con = con.getGenericExceptionTypes();
|
|
assert
|
|
et_con.length == 0 :
|
|
"Constructor C2(T1,T2,T4) should have no generic exception types";
|
|
|
|
tv_con = con.getTypeParameters();
|
|
assert
|
|
tv_con.length == 4 :
|
|
"Constructor C2(T1,T2,T4) should have four type parameters";
|
|
|
|
Class[] params4 = new Class[0];
|
|
con = cls.getDeclaredConstructor(params4);
|
|
|
|
pt_con = con.getGenericParameterTypes();
|
|
assert
|
|
pt_con.length == 0 :
|
|
"Constructor C2() should have no generic parameter types";
|
|
|
|
|
|
et_con = con.getGenericExceptionTypes();
|
|
assert
|
|
et_con.length == 1 :
|
|
"Constructor C2() should have one generic exception type";
|
|
|
|
tv_con = con.getTypeParameters();
|
|
assert
|
|
tv_con.length == 0 :
|
|
"Constructor C2() should have no type parameters";
|
|
|
|
|
|
}
|
|
}
|