test/hotspot/jtreg/runtime/ClassFile/ClassAccessFlagsRawTest.java

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/**
 * @test
 * @bug 8291360
 * @summary Test getting a class's raw access flags using java.lang.Class API
 * @modules java.base/java.lang:open
 * @compile classAccessFlagsRaw.jcod
 * @run main/othervm ClassAccessFlagsRawTest
 */

import java.lang.reflect.*;

public class ClassAccessFlagsRawTest {

    static Method m;

    public static void testIt(String className, int expectedResult) throws Exception {
        Class<?> testClass = Class.forName(className);
        int flags = (int)m.invoke(testClass);
        if (flags != expectedResult) {
            throw new RuntimeException(
                "expected 0x" + Integer.toHexString(expectedResult) + ", got 0x" + Integer.toHexString(flags) + " for class " + className);
        }
    }

    public static void main(String argv[]) throws Throwable {
        Class<?> cl = java.lang.Class.class;
        m = cl.getDeclaredMethod("getClassAccessFlagsRaw", new Class[0]);
        m.setAccessible(true);

        testIt("SUPERset", 0x21);  // ACC_SUPER 0x20 + ACC_PUBLIC 0x1
        testIt("SUPERnotset", Modifier.PUBLIC);

        // test primitive array.  should return ACC_ABSTRACT | ACC_FINAL | ACC_PUBLIC.
        int flags = (int)m.invoke((new int[3]).getClass());
        if (flags != (Modifier.ABSTRACT | Modifier.FINAL | Modifier.PUBLIC)) {
            throw new RuntimeException(
                "expected 0x411, got 0x" + Integer.toHexString(flags) + " for primitive array");
        }

        // test object array.  should return flags of component.
        flags = (int)m.invoke((new SUPERnotset[2]).getClass());
        if (flags != Modifier.PUBLIC) {
            throw new RuntimeException(
                "expected 0x1, got 0x" + Integer.toHexString(flags) + " for object array");
        }

        // test multi-dimensional object array.  should return flags of component.
        flags = (int)m.invoke((new SUPERnotset[4][2]).getClass());
        if (flags != Modifier.PUBLIC) {
            throw new RuntimeException(
                "expected 0x1, got 0x" + Integer.toHexString(flags) + " for object array");
        }
    }
}