caller/arguments thrower test case for strict functions

testcases/test-dev-func-strict-throwers.js

@@ -0,0 +1,66 @@
+/*===
+undefined
+undefined
+TypeError
+TypeError
+function function
+function function
+true
+true
+true
+true
+===*/
+
+/* The 'caller' and 'arguments' properties of a strict function instance
+ * are set to the thrower function of E5 Section 13.2.3.  See E5 Section
+ * 13.2.1, step 19.
+ *
+ * A non-strict function instance should not have a 'caller' nor an
+ * 'arguments' property at all.
+ */
+
+function f() { }
+
+function g() { 'use strict' }
+
+var pd1, pd2;
+
+try {
+    print(f.caller);
+} catch (e) {
+    print(e.name);
+}
+
+try {
+    print(f.arguments);
+} catch (e) {
+    print(e.name);
+}
+
+try {
+    print(g.caller);
+} catch (e) {
+    print(e.name);
+}
+
+try {
+    print(g.arguments);
+} catch (e) {
+    print(e.name);
+}
+
+// the thrower is required to be the same object
+try {
+    pd1 = Object.getOwnPropertyDescriptor(g, 'caller');
+    pd2 = Object.getOwnPropertyDescriptor(g, 'arguments');
+    print(typeof pd1.get, typeof pd1.set);
+    print(typeof pd2.get, typeof pd2.set);
+    print(pd1.get === pd1.set);
+    print(pd2.get === pd2.set);
+    print(pd1.get === pd2.get);
+    print(pd1.set === pd2.set);
+} catch (e) {
+    print(e.name);
+}
+
+