1 files changed, 65 insertions, 0 deletions
diff --git a/js/src/tests/non262/strict/shell.js b/js/src/tests/non262/strict/shell.js
new file mode 100644
index 0000000000..9d8c8695ee
--- /dev/null
+++ b/js/src/tests/non262/strict/shell.js
@@ -0,0 +1,65 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+(function(global) {
+
+  /*
+   * Return true if both of these return true:
+   * - LENIENT_PRED applied to CODE
+   * - STRICT_PRED applied to CODE with a use strict directive added to the front
+   *
+   * Run STRICT_PRED first, for testing code that affects the global environment
+   * in loose mode, but fails in strict mode.
+   */
+  global.testLenientAndStrict = function testLenientAndStrict(code, lenient_pred, strict_pred) {
+    return (strict_pred("'use strict'; " + code) && 
+            lenient_pred(code));
+  }
+
+  /*
+   * parsesSuccessfully(CODE) returns true if CODE parses as function
+   * code without an error.
+   */
+  global.parsesSuccessfully = function parsesSuccessfully(code) {
+    try {
+      Function(code);
+      return true;
+    } catch (exception) {
+      return false;
+    }
+  };
+
+  /*
+   * parseRaisesException(EXCEPTION)(CODE) returns true if parsing CODE
+   * as function code raises EXCEPTION.
+   */
+  global.parseRaisesException = function parseRaisesException(exception) {
+    return function (code) {
+      try {
+        Function(code);
+        return false;
+      } catch (actual) {
+        return exception.prototype.isPrototypeOf(actual);
+      }
+    };
+  };
+
+  /*
+   * returns(VALUE)(CODE) returns true if evaluating CODE (as eval code)
+   * completes normally (rather than throwing an exception), yielding a value
+   * strictly equal to VALUE.
+   */
+  global.returns = function returns(value) {
+    return function(code) {
+      try {
+        return eval(code) === value;
+      } catch (exception) {
+        return false;
+      }
+    }
+  }
+
+})(this);