Add m-esr52 at 52.6.0

1 files changed, 21 insertions, 0 deletions

diff --git a/js/src/tests/ecma_6/Object/preventExtensions.js b/js/src/tests/ecma_6/Object/preventExtensions.js
new file mode 100644
index 000000000..75c8ed3db
--- /dev/null
+++ b/js/src/tests/ecma_6/Object/preventExtensions.js
@@ -0,0 +1,21 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * https://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+var BUGNUMBER = 1073446;
+var summary = "Object.preventExtensions() should return its argument with no conversion when the argument is a primitive value";
+
+print(BUGNUMBER + ": " + summary);
+assertEq(Object.preventExtensions(), undefined);
+assertEq(Object.preventExtensions(undefined), undefined);
+assertEq(Object.preventExtensions(null), null);
+assertEq(Object.preventExtensions(1), 1);
+assertEq(Object.preventExtensions("foo"), "foo");
+assertEq(Object.preventExtensions(true), true);
+if (typeof Symbol === "function") {
+    assertEq(Object.preventExtensions(Symbol.for("foo")), Symbol.for("foo"));
+}
+
+if (typeof reportCompare === "function")
+    reportCompare(true, true);