diff -r 4ebc2e2fb97c -r 71c04702a3d5 test/jdk/sun/security/tools/jarsigner/warnings/NotYetValidCertTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/sun/security/tools/jarsigner/warnings/NotYetValidCertTest.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2013, 2017, 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.
+ */
+
+import jdk.testlibrary.OutputAnalyzer;
+import jdk.test.lib.util.JarUtils;
+
+/**
+ * @test
+ * @bug 8024302 8026037
+ * @summary Test for notYetValidCert warning
+ * @library /lib/testlibrary /test/lib ../
+ * @build jdk.test.lib.util.JarUtils
+ * @run main NotYetValidCertTest
+ */
+public class NotYetValidCertTest extends Test {
+
+    /**
+     * The test signs and verifies a jar that contains entries
+     * whose signer certificate is not yet valid (notYetValidCert).
+     * Warning message is expected.
+     */
+    public static void main(String[] args) throws Throwable {
+        NotYetValidCertTest test = new NotYetValidCertTest();
+        test.start();
+    }
+
+    protected void start() throws Throwable {
+        // create a jar file that contains one class file
+        Utils.createFiles(FIRST_FILE);
+        JarUtils.createJar(UNSIGNED_JARFILE, FIRST_FILE);
+
+        // create certificate that will be valid only tomorrow
+        keytool(
+                "-genkey",
+                "-alias", KEY_ALIAS,
+                "-keyalg", KEY_ALG,
+                "-keysize", Integer.toString(KEY_SIZE),
+                "-keystore", KEYSTORE,
+                "-storepass", PASSWORD,
+                "-keypass", PASSWORD,
+                "-dname", "CN=Test",
+                "-startdate", "+1d",
+                "-validity", Integer.toString(VALIDITY));
+
+        // sign jar
+        OutputAnalyzer analyzer = jarsigner(
+                "-keystore", KEYSTORE,
+                "-storepass", PASSWORD,
+                "-keypass", PASSWORD,
+                "-signedjar", SIGNED_JARFILE,
+                UNSIGNED_JARFILE,
+                KEY_ALIAS);
+
+        checkSigning(analyzer, NOT_YET_VALID_CERT_SIGNING_WARNING);
+
+        // verify signed jar
+        analyzer = jarsigner(
+                "-verify",
+                "-verbose",
+                "-keystore", KEYSTORE,
+                "-storepass", PASSWORD,
+                "-keypass", PASSWORD,
+                SIGNED_JARFILE,
+                KEY_ALIAS);
+
+        checkVerifying(analyzer, 0, NOT_YET_VALID_CERT_VERIFYING_WARNING);
+
+        // verify jar in strict mode
+        analyzer = jarsigner(
+                "-verify",
+                "-verbose",
+                "-strict",
+                "-keystore", KEYSTORE,
+                "-storepass", PASSWORD,
+                "-keypass", PASSWORD,
+                SIGNED_JARFILE,
+                KEY_ALIAS);
+
+        checkVerifying(analyzer, HAS_EXPIRED_CERT_EXIT_CODE,
+                NOT_YET_VALID_CERT_VERIFYING_WARNING);
+
+        System.out.println("Test passed");
+    }
+
+}