jdk-24/test/jdk/java/security/Provider/DefaultProviderList.java

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 * 2 along with this work; if not, write to the Free Software Foundation,
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/**
 * @test
 * @bug 7191662 8157469 8157489
 * @summary Ensure non-java.base providers can be found by ServiceLoader
 * @author Valerie Peng
 */

import java.security.Provider;
import java.security.Security;
import java.util.Arrays;
import java.util.Iterator;
import java.util.ServiceLoader;

public class DefaultProviderList {

    public static void main(String[] args) throws Exception {
        Provider[] defaultProvs = Security.getProviders();
        System.out.println("Providers: " + Arrays.asList(defaultProvs));
        System.out.println();

        ServiceLoader<Provider> sl = ServiceLoader.load(Provider.class);
        boolean failed = false;

        Module baseMod = Object.class.getModule();

        // Test#1: check that all non-base security providers can be found
        // through ServiceLoader
        for (Provider p : defaultProvs) {
            String pName = p.getName();
            Class pClass = p.getClass();

            if (pClass.getModule() != baseMod) {
                String pClassName = pClass.getName();
                Iterator<Provider> provIter = sl.iterator();
                boolean found = false;
                while (provIter.hasNext()) {
                    Provider pFromSL = provIter.next();

                    // check for match by class name because PKCS11 provider
                    // will have a different name after being configured.
                    if (pFromSL.getClass().getName().equals(pClassName)) {
                        found = true;
                        System.out.println("SL found provider " + pName);
                        break;
                    }
                }
                if (!found) {
                    failed = true;
                    System.out.println("Error: SL cannot find provider " +
                        pName);
                }
            }
        }

        // Test#2: check that all security providers found through ServiceLoader
        // are not from base module
        Iterator<Provider> provIter = sl.iterator();
        while (provIter.hasNext()) {
            Provider pFromSL = provIter.next();
            if (pFromSL.getClass().getModule() == baseMod) {
                failed = true;
                System.out.println("Error: base provider " +
                    pFromSL.getName() + " loaded by SL");
            }
        }

        if (!failed) {
            System.out.println("Test Passed");
        } else {
            throw new Exception("One or more tests failed");
        }
    }
}