--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/langtools/tools/javac/patterns/BindingsTest1.java	Wed Nov 27 09:00:01 2019 +0100
@@ -0,0 +1,166 @@
+/*
+ * Copyright (c) 2017, 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 8231827
+ * @summary Basic tests for bindings from instanceof
+ * @compile --enable-preview -source ${jdk.version} BindingsTest1.java
+ * @run main/othervm --enable-preview BindingsTest1
+ */
+
+public class BindingsTest1 {
+    public static boolean Ktrue() { return true; }
+    public static void main(String[] args) {
+        Object o1 = "hello";
+        Integer i = 42;
+        Object o2 = i;
+        Object o3 = "there";
+
+
+        // Test for (e matches P).T = { binding variables in P }
+        if (o1 instanceof String s) {
+            s.length();
+        }
+
+        // Test for e1 && e2.T = union(e1.T, e2.T)
+        if (o1 instanceof String s && o2 instanceof Integer in) {
+            s.length();
+            in.intValue();
+        }
+
+        // test for e1&&e2 - include e1.T in e2
+        if (o1 instanceof String s && s.length()>0) {
+            System.out.print("done");
+        }
+
+        // Test for (e1 || e2).F = union(e1.F, e2.F)
+        if (!(o1 instanceof String s) || !(o3 instanceof Integer in)){
+        } else {
+            s.length();
+            i.intValue();
+        }
+
+        // Test for e1||e2 - include e1.F in e2
+
+        if (!(o1 instanceof String s) || s.length()>0) {
+            System.out.println("done");
+        }
+
+        // Test for e1 ? e2: e3 - include e1.T in e2
+        if (o1 instanceof String s ? s.length()>0 : false) {
+            System.out.println("done");
+        }
+
+        // Test for e1 ? e2 : e3 - include e1.F in e3
+        if (!(o1 instanceof String s) ? false : s.length()>0){
+            System.out.println("done");
+        }
+
+        // Test for (!e).T = e.F
+
+        if (!(!(o1 instanceof String s) || !(o3 instanceof Integer in))){
+            s.length();
+            i.intValue();
+        }
+
+        // Test for (!e).F = e.T
+        if (!(o1 instanceof String s)) {
+
+        } else {
+            s.length();
+        }
+
+        L1: {
+            if (o1 instanceof String s) {
+                s.length();
+            } else {
+                break L1;
+            }
+            s.length();
+        }
+
+        L2: {
+            if (!(o1 instanceof String s)) {
+                break L2;
+            } else {
+                s.length();
+            }
+            s.length();
+        }
+
+        L4: {
+            if (!(o1 instanceof String s)) {
+                break L4;
+            }
+            s.length();
+        }
+
+        {
+            while (!(o1 instanceof String s)) {
+            }
+
+            s.length();
+        }
+
+        L5: {
+            while (!(o1 instanceof String s)) {
+            }
+
+            s.length();
+        }
+
+        {
+            L6: for ( ;!(o1 instanceof String s); ) {
+
+            }
+
+            s.length();
+        }
+
+        {
+            L7: do {
+
+            } while (!(o1 instanceof String s));
+
+            s.length();
+        }
+
+        if (o1 instanceof String s) {
+            Runnable r1 = new Runnable() {
+                @Override
+                public void run() {
+                    s.length();
+                }
+            };
+            r1.run();
+            Runnable r2 = () -> {
+                s.length();
+            };
+            r2.run();
+            String s2 = s;
+        }
+
+        System.out.println("BindingsTest1 complete");
+    }
+}