1 files changed, 69 insertions, 0 deletions
diff --git a/js/src/tests/non262/TypedArray/toString.js b/js/src/tests/non262/TypedArray/toString.js
new file mode 100644
index 0000000000..0879b8b31d
--- /dev/null
+++ b/js/src/tests/non262/TypedArray/toString.js
@@ -0,0 +1,69 @@
+const TypedArrayPrototype = Object.getPrototypeOf(Int8Array.prototype);
+
+// %TypedArrayPrototype% has an own "toString" property.
+assertEq(TypedArrayPrototype.hasOwnProperty("toString"), true);
+
+// The initial value of %TypedArrayPrototype%.toString is Array.prototype.toString.
+assertEq(TypedArrayPrototype.toString, Array.prototype.toString);
+
+// The concrete TypedArray prototypes do not have an own "toString" property.
+assertEq(anyTypedArrayConstructors.every(c => !c.hasOwnProperty("toString")), true);
+
+assertDeepEq(Object.getOwnPropertyDescriptor(TypedArrayPrototype, "toString"), {
+    value: TypedArrayPrototype.toString,
+    writable: true,
+    enumerable: false,
+    configurable: true,
+});
+
+for (let constructor of anyTypedArrayConstructors) {
+    assertEq(new constructor([]).toString(), "");
+    assertEq(new constructor([1]).toString(), "1");
+    assertEq(new constructor([1, 2]).toString(), "1,2");
+}
+
+const testCases = {
+    [Int8Array.name]: {
+        array: [-1, 2, -3, 4, NaN],
+        expected: "-1,2,-3,4,0",
+    },
+    [Int16Array.name]: {
+        array: [-1, 2, -3, 4, NaN],
+        expected: "-1,2,-3,4,0",
+    },
+    [Int32Array.name]: {
+        array: [-1, 2, -3, 4, NaN],
+        expected: "-1,2,-3,4,0",
+    },
+    [Uint8Array.name]: {
+        array: [255, 2, 3, 4, NaN],
+        expected: "255,2,3,4,0",
+    },
+    [Uint16Array.name]: {
+        array: [-1, 2, 3, 4, NaN],
+        expected: "65535,2,3,4,0",
+    },
+    [Uint32Array.name]: {
+        array: [-1, 2, 3, 4, NaN],
+        expected: "4294967295,2,3,4,0",
+    },
+    [Uint8ClampedArray.name]: {
+        array: [255, 256, 2, 3, 4, NaN],
+        expected: "255,255,2,3,4,0",
+    },
+    [Float32Array.name]: {
+        array: [-0, 0, 0.5, -0.5, NaN, Infinity, -Infinity],
+        expected: "0,0,0.5,-0.5,NaN,Infinity,-Infinity",
+    },
+    [Float64Array.name]: {
+        array: [-0, 0, 0.5, -0.5, NaN, Infinity, -Infinity],
+        expected: "0,0,0.5,-0.5,NaN,Infinity,-Infinity",
+    },
+};
+for (let constructor of anyTypedArrayConstructors) {
+    let {array, expected} = testCases[constructor.name];
+    assertEq(new constructor(array).toString(), expected);
+}
+
+if (typeof reportCompare === "function")
+    reportCompare(true, true);