test/918-fields/src/art/Test918.java

/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package art;

import java.io.InterruptedIOException;
import java.lang.reflect.Field;
import java.util.Arrays;

public class Test918 {
    public static void run() throws Exception {
        doTest();
    }

    public static void doTest() throws Exception {
        testField(Math.class, "PI");
        testField(InterruptedIOException.class, "bytesTransferred");
        testField(Foo.class, "this$0");
        testField(Bar.class, "VAL");
        testField(Generics.class, "generics");
        testField(Generics.class, "privateValue");
    }

    private static void testField(Class<?> base, String fieldName) throws Exception {
        Field f = base.getDeclaredField(fieldName);
        String[] result = getFieldName(f);
        System.out.println(Arrays.toString(result));

        Class<?> declClass = getFieldDeclaringClass(f);
        if (base != declClass) {
            throw new RuntimeException("Declaring class not equal: " + base + " vs " + declClass);
        }
        System.out.println(declClass);

        int modifiers = getFieldModifiers(f);
        if (modifiers != f.getModifiers()) {
            throw new RuntimeException(
                    "Modifiers not equal: " + f.getModifiers() + " vs " + modifiers);
        }
        System.out.println(modifiers);

        boolean synth = isFieldSynthetic(f);
        if (synth != f.isSynthetic()) {
            throw new RuntimeException("Synthetic not equal: " + f.isSynthetic() + " vs " + synth);
        }
        System.out.println(synth);
    }

    private static native String[] getFieldName(Field f);
    private static native Class<?> getFieldDeclaringClass(Field f);
    private static native int getFieldModifiers(Field f);
    private static native boolean isFieldSynthetic(Field f);

    private class Foo {}

    private static interface Bar {
        public static int VAL = 1;
    }

    private static class Generics<T> {
        T generics;
        private int privateValue = 42;
    }
}