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diff --git a/test/script/basic/optimistic_check_type.js b/test/script/basic/optimistic_check_type.js
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+/*
+ * Copyright (c) 2014, 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 8036987, 8037572
+ * @summary Implement tests that checks static types in the compiled code
+ * @option --optimistic-types=true
+ * @run
+ */
+
+var inspect = Java.type("jdk.nashorn.test.tools.StaticTypeInspector").inspect
+var a=3, b=2.3, c=true, d;
+var x = { a: 2, b:0, c:undefined}
+var trees = new Array("redwood", "bay", "cedar", "oak");
+
+// Testing conditional operator
+print(inspect("" ? b : x.a, "ternary operator"))
+var b1 = b;
+print(inspect(x.b ? b1 : x.a, "ternary operator"))
+var b2 = b;
+print(inspect(c ? b2 : a, "ternary operator"))
+var b3 = b;
+print(inspect(!c ? b3 : a, "ternary operator"))
+var b4 = b;
+print(inspect(d ? b4 : x.c, "ternary operator"))
+print(inspect(x.c ? a : c, "ternary operator"))
+print(inspect(c ? d : a, "ternary operator"))
+var b5 = b;
+print(inspect(c ? +a : b5, "ternary operator"))
+
+// Testing format methods
+print(inspect(b.toFixed(2), "global double toFixed()"))
+print(inspect(b.toPrecision(2)/1, "global double toPrecision() divided by 1"))
+print(inspect(b.toExponential(2), "global double toExponential()"))
+
+// Testing arrays
+print(inspect(trees[1], "member object"))
+trees[1] = undefined;
+print(inspect(trees[1], "member undefined"))
+var b6=b;
+print(inspect(1 in trees ? b6 : a, "conditional on array member"))
+delete trees[2]
+var b7=b;
+print(inspect(2 in trees ? b7 : a, "conditional on array member"))
+print(inspect(3 in trees ? trees[2]="bay" : a, "conditional on array member"))
+var b8=b;
+print(inspect("oak" in trees ? b8 : a, "conditional on array member"))
+
+// Testing nested functions and return value
+function f1() {
+    var x = 2, y = 1;
+    function g() {
+        print(inspect(x, "outer local variable"));
+        print(inspect(a, "global variable"));
+        print(inspect(x*y, "outer local int multiplication by outer local int"));
+        print(inspect(a*d, "global int multiplication by global undefined"));
+    }
+    g()
+}
+f1()
+
+function f2(a,b,c) {
+    g = (a+b) * c;
+    print(inspect(c, "local undefined"));
+    print(inspect(a+b, "local undefined addition local undefined"));
+    print(inspect(g, "local undefined multiplication by undefined"));
+}
+f2()
+
+function f3(a,b) {
+    g = a && b;
+    print(inspect(g, "local undefined AND local undefined"));
+    print(inspect(c||g, "global true OR local undefined"));
+}
+f3()
+
+function f4() {
+    var x = true, y = 0;
+    function g() {
+        print(inspect(x+y, "outer local true addition local int"));
+        print(inspect(a+x, "global int addition outer local true"));
+        print(inspect(x*y, "outer local true multiplication by outer local int"));
+        print(inspect(y*d, "outer local int multiplication by global undefined"));
+    }
+    g()
+}
+f4()