test/jdk/java/lang/reflect/AccessFlag/StrictAccessFlagTest.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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/*
 * @test
 * @bug 8266670
 * @summary Test expected value of STRICT AccessFlag
 * @compile -source 16 -target 16 StrictAccessFlagTest.java
 * @run main StrictAccessFlagTest
 */

// Note: cannot use --release 16 because the accessFlags() method is
// not found in release 16; therefore -source and -target are used
// instead.

import java.lang.annotation.*;
import java.lang.reflect.*;
import java.util.Collections;
import java.util.EnumSet;
import java.util.Set;

import static java.lang.reflect.AccessFlag.*;

/*
 * Test expected value of ACC_STRICT access flag.
 */
// Declaring the class strictfp implicitly sets ACC_STRICT on all its
// methods and constructors.
public strictfp class StrictAccessFlagTest {
    @ExpectedFlags({PUBLIC, STATIC, VARARGS, STRICT})
    public static void main(String... args) {
        for (var ctor :
                 StrictAccessFlagTest.class.getDeclaredConstructors()) {
            checkExecutable(ctor);
        }

        for (var method :
                 StrictAccessFlagTest.class.getDeclaredMethods()) {
            checkExecutable(method);
        }
    }

    private static void checkExecutable(Executable method) {
        ExpectedFlags expected =
            method.getAnnotation(ExpectedFlags.class);
        if (expected != null) {
            Set<AccessFlag> base = EnumSet.noneOf(AccessFlag.class);
            Collections.addAll(base, expected.value());
            Set<AccessFlag> actual = method.accessFlags();
            if (!base.equals(actual)) {
                throw new RuntimeException("On " + method +
                        " expected " + base +
                        " got " + actual);
            }
        }
    }

    // Constructor
    @ExpectedFlags({PUBLIC, STRICT})
    public StrictAccessFlagTest() {}

    @Retention(RetentionPolicy.RUNTIME)
    private @interface ExpectedFlags {
        AccessFlag[] value();
    }
}