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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test
 * @bug 8267108
 * @library /test/lib
 * @summary Check that callAs and doAs throw the specified exceptions
 * @run main/othervm -Djava.security.manager=allow -Djdk.security.auth.subject.useTL=true Exceptions
 * @run main/othervm -Djava.security.manager=allow -Djdk.security.auth.subject.useTL=false Exceptions
 */
import jdk.test.lib.Asserts;

import javax.security.auth.Subject;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.concurrent.Callable;
import java.util.concurrent.CompletionException;

public class Exceptions {

    public static void main(String[] args) throws Exception {

        // Checked exceptions are always wrapped
        new TestCase(() -> { throw new Exception("Hi"); })
                .testDoAs(PrivilegedActionException.class, Exception.class)
                .testCallAs(CompletionException.class, Exception.class);
        // PrivilegedActionException itself is checked
        new TestCase(() -> { throw new PrivilegedActionException(new Exception("Hi")); })
                .testDoAs(PrivilegedActionException.class, PrivilegedActionException.class, Exception.class)
                .testCallAs(CompletionException.class, PrivilegedActionException.class, Exception.class);

        // Unchecked exception: rethrown by doAs(), wrapped by callAs()
        new TestCase(() -> { throw new RuntimeException("Hi"); })
                .testDoAs(RuntimeException.class)
                .testCallAs(CompletionException.class, RuntimeException.class);
        // CompletionException itself is unchecked
        new TestCase(() -> { throw new CompletionException(new Exception("Hi")); })
                .testDoAs(CompletionException.class, Exception.class)
                .testCallAs(CompletionException.class, CompletionException.class, Exception.class);
    }

    static class TestCase {

        final Callable<Void> action;
        TestCase(Callable<Void> action) {
            this.action = action;
        }

        TestCase testDoAs(Class<?>... exceptions) {
            return test(true, exceptions);
        }

        TestCase testCallAs(Class<?>... exceptions) {
            return test(false, exceptions);
        }

        // Perform the action in doAs() or callAs() and inspect
        // the exception (and its causes, recursively) it throws
        private TestCase test(boolean doAs, Class<?>... exceptions) {
            int pos = 0;
            try {
                if (doAs) {
                    Subject.doAs(null, (PrivilegedExceptionAction<Object>) action::call);
                } else {
                    Subject.callAs(null, action::call);
                }
            } catch (Exception e) {
                while (e != null) {
                    Asserts.assertEQ(e.getClass(), exceptions[pos++]);
                    e = (Exception) e.getCause();
                }
            }
            // Make sure the list is the exact size
            Asserts.assertTrue(pos == exceptions.length);
            return this;
        }
    }
}