1 files changed, 17 insertions, 0 deletions
diff --git a/js/src/tests/non262/TypedArray/Tconstructor-fromTypedArray-byteLength.js b/js/src/tests/non262/TypedArray/Tconstructor-fromTypedArray-byteLength.js
new file mode 100644
index 0000000000..6aadca5c81
--- /dev/null
+++ b/js/src/tests/non262/TypedArray/Tconstructor-fromTypedArray-byteLength.js
@@ -0,0 +1,17 @@
+var g = newGlobal();
+
+var arr = [1, 2, 3];
+for (var constructor of anyTypedArrayConstructors) {
+    var tarr = new constructor(arr);
+    for (var constructor2 of anyTypedArrayConstructors) {
+        var copied = new constructor2(tarr);
+        assertEq(copied.buffer.byteLength, arr.length * constructor2.BYTES_PER_ELEMENT);
+
+        g.tarr = tarr;
+        copied = g.eval(`new ${constructor2.name}(tarr);`);
+        assertEq(copied.buffer.byteLength, arr.length * constructor2.BYTES_PER_ELEMENT);
+    }
+}
+
+if (typeof reportCompare === "function")
+    reportCompare(true, true);