1 files changed, 43 insertions, 0 deletions
diff --git a/js/src/tests/non262/extensions/shareddataview.js b/js/src/tests/non262/extensions/shareddataview.js
new file mode 100644
index 0000000000..30ec8ef68e
--- /dev/null
+++ b/js/src/tests/non262/extensions/shareddataview.js
@@ -0,0 +1,43 @@
+// |reftest| skip-if(!xulRuntime.shell)
+/* -*- Mode: js2; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * https://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+// Test DataView on SharedArrayBuffer.
+
+if (this.SharedArrayBuffer) {
+
+var sab = new SharedArrayBuffer(4096);
+var dv = new DataView(sab);
+
+assertEq(sab, dv.buffer);
+assertEq(dv.byteLength, sab.byteLength);
+assertEq(ArrayBuffer.isView(dv), true);
+
+var dv2 = new DataView(sab, 1075, 2048);
+
+assertEq(sab, dv2.buffer);
+assertEq(dv2.byteLength, 2048);
+assertEq(dv2.byteOffset, 1075);
+assertEq(ArrayBuffer.isView(dv2), true);
+
+// Test that it is the same buffer memory for the two views
+
+dv.setInt8(1075, 37);
+assertEq(dv2.getInt8(0), 37);
+
+// Test that range checking works
+
+assertThrowsInstanceOf(() => dv.setInt32(4098, -1), RangeError);
+assertThrowsInstanceOf(() => dv.setInt32(4094, -1), RangeError);
+assertThrowsInstanceOf(() => dv.setInt32(-1, -1), RangeError);
+
+assertThrowsInstanceOf(() => dv2.setInt32(2080, -1), RangeError);
+assertThrowsInstanceOf(() => dv2.setInt32(2046, -1), RangeError);
+assertThrowsInstanceOf(() => dv2.setInt32(-1, -1), RangeError);
+
+}
+
+reportCompare(true,true);