Add m-esr52 at 52.6.0

1 files changed, 100 insertions, 0 deletions

diff --git a/js/src/tests/ecma_5/JSON/cyclic-stringify.js b/js/src/tests/ecma_5/JSON/cyclic-stringify.js
new file mode 100644
index 000000000..5eb6273a9
--- /dev/null
+++ b/js/src/tests/ecma_5/JSON/cyclic-stringify.js
@@ -0,0 +1,100 @@
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/licenses/publicdomain/
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 578273;
+var summary =
+  "ES5: Properly detect cycles in JSON.stringify (throw TypeError, check for " +
+  "cycles rather than imprecisely rely on recursion limits)";
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+// objects
+
+var count = 0;
+var desc =
+  {
+    get: function() { count++; return obj; },
+    enumerable: true,
+    configurable: true
+  };
+var obj = Object.defineProperty({ p1: 0 }, "p2", desc);
+
+try
+{
+  var str = JSON.stringify(obj);
+  assertEq(false, true, "should have thrown, got " + str);
+}
+catch (e)
+{
+  assertEq(e instanceof TypeError, true,
+           "wrong error type: " + e.constructor.name);
+  assertEq(count, 1,
+           "cyclic data structures not detected immediately");
+}
+
+count = 0;
+var obj2 = Object.defineProperty({}, "obj", desc);
+try
+{
+  var str = JSON.stringify(obj2);
+  assertEq(false, true, "should have thrown, got " + str);
+}
+catch (e)
+{
+  assertEq(e instanceof TypeError, true,
+           "wrong error type: " + e.constructor.name);
+  assertEq(count, 2,
+           "cyclic data structures not detected immediately");
+}
+
+
+// arrays
+
+var count = 0;
+var desc =
+  {
+    get: function() { count++; return arr; },
+    enumerable: true,
+    configurable: true
+  };
+var arr = Object.defineProperty([], "0", desc);
+
+try
+{
+  var str = JSON.stringify(arr);
+  assertEq(false, true, "should have thrown, got " + str);
+}
+catch (e)
+{
+  assertEq(e instanceof TypeError, true,
+           "wrong error type: " + e.constructor.name);
+  assertEq(count, 1,
+           "cyclic data structures not detected immediately");
+}
+
+count = 0;
+var arr2 = Object.defineProperty([], "0", desc);
+try
+{
+  var str = JSON.stringify(arr2);
+  assertEq(false, true, "should have thrown, got " + str);
+}
+catch (e)
+{
+  assertEq(e instanceof TypeError, true,
+           "wrong error type: " + e.constructor.name);
+  assertEq(count, 2,
+           "cyclic data structures not detected immediately");
+}
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
+
+print("Tests complete");