1 files changed, 44 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/nativeElementAccesses.js b/js/src/jit-test/tests/ion/nativeElementAccesses.js
new file mode 100644
index 0000000000..c126750ac4
--- /dev/null
+++ b/js/src/jit-test/tests/ion/nativeElementAccesses.js
@@ -0,0 +1,44 @@
+
+function testOverwritingSparseHole()
+{
+  var x = [];
+  for (var i = 0; i < 50; i++)
+    x[i] = i;
+  var hit = false;
+  Object.defineProperty(x, 40, {set: function() { hit = true; }});
+  for (var i = 0; i < 50; i++)
+    x[i] = 10;
+  assertEq(hit, true);
+}
+testOverwritingSparseHole();
+
+function testReadingSparseHole()
+{
+  var x = [];
+  for (var i = 5; i < 50; i++)
+    x[i] = i;
+  var hit = false;
+  Object.defineProperty(x, 40, {get: function() { hit = true; return 5.5; }});
+  var res = 0;
+  for (var i = 0; i < 50; i++) {
+    res += x[i];
+    if (i == 10)
+      res = 0;
+  }
+  assertEq(res, 1135.5);
+  assertEq(hit, true);
+}
+testReadingSparseHole();
+
+function testInSparseHole()
+{
+  var x = [];
+  for (var i = 5; i < 50; i++)
+    x[i] = i;
+  Object.defineProperty(x, 40, {get: function() {}});
+  var res = 0;
+  for (var i = 0; i < 50; i++)
+    res += (i in x) ? 1 : 0;
+  assertEq(res, 45);
+}
+testInSparseHole();