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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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tree10027f336435511475e392454359edea8e25895d /js/src/tests/ecma_5/misc/global-numeric-properties.js
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'js/src/tests/ecma_5/misc/global-numeric-properties.js')
-rw-r--r--js/src/tests/ecma_5/misc/global-numeric-properties.js59
1 files changed, 59 insertions, 0 deletions
diff --git a/js/src/tests/ecma_5/misc/global-numeric-properties.js b/js/src/tests/ecma_5/misc/global-numeric-properties.js
new file mode 100644
index 000000000..352c0d3b7
--- /dev/null
+++ b/js/src/tests/ecma_5/misc/global-numeric-properties.js
@@ -0,0 +1,59 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 537863;
+var summary =
+ 'undefined, Infinity, and NaN global properties should not be writable';
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+var desc, old, error;
+var global = this;
+
+var names = ["NaN", "Infinity", "undefined"];
+
+for (var i = 0; i < names.length; i++)
+{
+ var name = names[i];
+ desc = Object.getOwnPropertyDescriptor(global, name);
+ assertEq(desc !== undefined, true, name + " should be present");
+ assertEq(desc.enumerable, false, name + " should not be enumerable");
+ assertEq(desc.configurable, false, name + " should not be configurable");
+ assertEq(desc.writable, false, name + " should not be writable");
+
+ old = global[name];
+ global[name] = 17;
+ assertEq(global[name], old, name + " changed on setting?");
+
+ error = "before";
+ try
+ {
+ throw new TypeError("SpiderMonkey doesn't currently implement " +
+ "strict-mode throwing when setting a readonly " +
+ "property, not running this bit of test for now; " +
+ "see bug 537873");
+
+ (function() { "use strict"; global[name] = 42; error = "didn't throw"; })();
+ }
+ catch (e)
+ {
+ if (e instanceof TypeError)
+ error = "typeerror";
+ else
+ error = "bad exception: " + e;
+ }
+ assertEq(error, "typeerror", "wrong strict mode error setting " + name);
+}
+
+/******************************************************************************/
+
+reportCompare(true, true);
+
+print("All tests passed!");