Bindings for CSSOM View smooth scroll API

LayoutTests/fast/dom/Window/window-scroll-arguments.html

Index: LayoutTests/fast/dom/Window/window-scroll-arguments.html
diff --git a/LayoutTests/fast/dom/Window/window-scroll-arguments.html b/LayoutTests/fast/dom/Window/window-scroll-arguments.html
index 26855c37975409c0081953fa5ffbbb7ceaa4e3da..d2c9b253e38bdde1e744f21d29370482c4170494 100644
--- a/LayoutTests/fast/dom/Window/window-scroll-arguments.html
+++ b/LayoutTests/fast/dom/Window/window-scroll-arguments.html
@@ -25,7 +25,8 @@
     reset();
 
     description("This test makes sure that calling the window scrolling\
-    methods with less than 2 arguments throws exception.");
+    methods with less than 2 arguments or with an invalid third argument\
+    throws an exception.");
 
     // scrollTo /////////////////////////
     debug('');
@@ -46,6 +47,16 @@
     shouldBe('window.scrollY', 'y');
     reset();
 
+    debug("Testing - scrollTo with a valid ScrollOptions argument");
+    shouldNotThrow('window.scrollTo(x, y, { })');
+    shouldNotThrow('window.scrollTo(x, y, { behavior: "auto" })');
+    shouldNotThrow('window.scrollTo(x, y, { behavior: "instant" })');
+    shouldNotThrow('window.scrollTo(x, y, { behavior: "smooth" })');
+
+    debug("Testing - scrollTo with an invalid ScrollOptions argument");
+    shouldThrow('window.scrollTo(x, y, { behavior: "" })');
+    shouldThrow('window.scrollTo(x, y, { behavior: "abcd" })');
+
     // scroll /////////////////////////
     debug('');
     debug('window.scroll Tests');
@@ -65,6 +76,16 @@
     shouldBe('window.scrollY', 'y');
     reset();
 
+    debug("Testing - scroll with a valid ScrollOptions argument");
+    shouldNotThrow('window.scroll(x, y, { })');
+    shouldNotThrow('window.scroll(x, y, { behavior: "auto" })');
+    shouldNotThrow('window.scroll(x, y, { behavior: "instant" })');
+    shouldNotThrow('window.scroll(x, y, { behavior: "smooth" })');
+
+    debug("Testing - scroll with an invalid ScrollOptions argument");
+    shouldThrow('window.scroll(x, y, { behavior: "" })');
+    shouldThrow('window.scroll(x, y, { behavior: "abcd" })');
+
     // scrollBy /////////////////////////
     debug('');
     debug('window.scrollBy Tests');
@@ -83,6 +104,16 @@
     shouldBe('window.scrollX', 'resetX + x');
     shouldBe('window.scrollY', 'resetY + y');
     reset();
+
+    debug("Testing - scrollBy with a valid ScrollOptions argument");
+    shouldNotThrow('window.scrollBy(x, y, { })');
+    shouldNotThrow('window.scrollBy(x, y, { behavior: "auto" })');
+    shouldNotThrow('window.scrollBy(x, y, { behavior: "instant" })');
+    shouldNotThrow('window.scrollBy(x, y, { behavior: "smooth" })');
+
+    debug("Testing - scrollBy with an invalid ScrollOptions argument");
+    shouldThrow('window.scrollBy(x, y, { behavior: "" })');
+    shouldThrow('window.scrollBy(x, y, { behavior: "abcd" })');
 </script>
 </body>
 </html>