1 files changed, 42 insertions, 0 deletions
diff --git a/js/src/tests/non262/Tuple/prototype/length/length-getter.js b/js/src/tests/non262/Tuple/prototype/length/length-getter.js
new file mode 100644
index 0000000000..7d07c152e3
--- /dev/null
+++ b/js/src/tests/non262/Tuple/prototype/length/length-getter.js
@@ -0,0 +1,42 @@
+// |reftest| skip-if(!this.hasOwnProperty("Tuple"))
+/*---
+esid: sec-get-%tuple%.prototype.length
+description: >
+info: |
+  get %Tuple%.prototype.length
+
+Tuple.prototype.length is an accessor property whose set accessor function is undefined. Its get accessor function performs the following steps:
+
+1. Let T be ? thisTupleValue(this value).
+2. Let size be the length of T.[[Sequence]].
+3. Return size.
+
+features: [Tuple]
+---*/
+
+/* Section 8.2.3.2 */
+
+let TuplePrototype = Tuple.prototype;
+let desc = Object.getOwnPropertyDescriptor(TuplePrototype, "length");
+
+assertEq(typeof desc.get, "function");
+
+assertEq(desc.enumerable, false);
+assertEq(desc.configurable, true);
+
+assertEq(desc.set, undefined);
+
+let values = [[#[1,2,3], 3], [#[1], 1], [#[], 0]];
+
+for (pair of values) {
+    let tup = pair[0];
+    let len = pair[1];
+    assertEq(desc.get.call(tup), len);
+    assertEq(desc.get.call(Object(tup)), len);
+    assertEq(tup["length"], len);
+}
+
+assertThrowsInstanceOf(() => desc.get.call("monkeys"), TypeError, "get length method called on incompatible string");
+assertThrowsInstanceOf(() => desc.get.call(new Object()), TypeError, "get length method called on incompatible Object");
+
+reportCompare(0, 0);