--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/sun/security/tools/keytool/fakegen/PSS.java	Thu Oct 17 20:53:35 2019 +0100
@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8215694 8222987 8225257
+ * @summary keytool cannot generate RSASSA-PSS certificates
+ * @library /test/lib
+ * @build java.base/sun.security.rsa.RSAKeyPairGenerator
+ * @modules java.base/sun.security.util
+ *          java.base/sun.security.x509
+ * @requires os.family != "solaris"
+ * @run main PSS
+ */
+
+// This test is excluded from Solaris because the 8192-bit RSA key pair
+// generator is extremely slow there. Please note the fake
+// KeyPairGenerator will not be used because of provider preferences.
+
+import jdk.test.lib.Asserts;
+import jdk.test.lib.SecurityTools;
+import jdk.test.lib.process.OutputAnalyzer;
+import jdk.test.lib.security.DerUtils;
+import sun.security.util.ObjectIdentifier;
+import sun.security.x509.AlgorithmId;
+
+import java.io.File;
+import java.security.KeyStore;
+import java.security.cert.X509Certificate;
+
+public class PSS {
+
+    public static void main(String[] args) throws Exception {
+
+        genkeypair("p", "-keyalg RSASSA-PSS -sigalg RSASSA-PSS")
+                .shouldHaveExitValue(0);
+
+        genkeypair("a", "-keyalg RSA -sigalg RSASSA-PSS -keysize 2048")
+                .shouldHaveExitValue(0);
+
+        genkeypair("b", "-keyalg RSA -sigalg RSASSA-PSS -keysize 4096")
+                .shouldHaveExitValue(0);
+
+        genkeypair("c", "-keyalg RSA -sigalg RSASSA-PSS -keysize 8192")
+                .shouldHaveExitValue(0);
+
+        KeyStore ks = KeyStore.getInstance(
+                new File("ks"), "changeit".toCharArray());
+
+        check((X509Certificate)ks.getCertificate("p"), "RSASSA-PSS",
+                AlgorithmId.SHA256_oid);
+
+        check((X509Certificate)ks.getCertificate("a"), "RSA",
+                AlgorithmId.SHA256_oid);
+
+        check((X509Certificate)ks.getCertificate("b"), "RSA",
+                AlgorithmId.SHA384_oid);
+
+        check((X509Certificate)ks.getCertificate("c"), "RSA",
+                AlgorithmId.SHA512_oid);
+
+        // More commands
+        kt("-certreq -alias p -sigalg RSASSA-PSS -file p.req")
+                .shouldHaveExitValue(0);
+
+        kt("-gencert -alias a -sigalg RSASSA-PSS -infile p.req -outfile p.cert")
+                .shouldHaveExitValue(0);
+
+        kt("-importcert -alias p -file p.cert")
+                .shouldHaveExitValue(0);
+
+        kt("-selfcert -alias p -sigalg RSASSA-PSS")
+                .shouldHaveExitValue(0);
+    }
+
+    static OutputAnalyzer genkeypair(String alias, String options)
+            throws Exception {
+        String patchArg = "-J--patch-module=java.base=" + System.getProperty("test.classes")
+                + File.separator + "patches" + File.separator + "java.base";
+        return kt(patchArg + " -genkeypair -alias " + alias
+                + " -dname CN=" + alias + " " + options);
+    }
+
+    static OutputAnalyzer kt(String cmd)
+            throws Exception {
+        return SecurityTools.keytool("-storepass changeit -keypass changeit "
+                + "-keystore ks " + cmd);
+    }
+
+    static void check(X509Certificate cert, String expectedKeyAlg,
+            ObjectIdentifier expectedMdAlg) throws Exception {
+        Asserts.assertEQ(cert.getPublicKey().getAlgorithm(), expectedKeyAlg);
+        Asserts.assertEQ(cert.getSigAlgName(), "RSASSA-PSS");
+        DerUtils.checkAlg(cert.getSigAlgParams(), "000", expectedMdAlg);
+    }
+}