1 files changed, 45 insertions, 0 deletions
diff --git a/testing/web-platform/tests/visual-viewport/viewport-unscaled-scroll.html b/testing/web-platform/tests/visual-viewport/viewport-unscaled-scroll.html
new file mode 100644
index 0000000000..93623d1962
--- /dev/null
+++ b/testing/web-platform/tests/visual-viewport/viewport-unscaled-scroll.html
@@ -0,0 +1,45 @@
+<!doctype html>
+<html>
+    <head>
+        <title>Viewport: Scroll - no page scale</title>
+        <meta charset="utf-8">
+        <meta name="viewport" content="width=device-width, minimum-scale=1">
+        <script src="/resources/testharness.js"></script>
+        <script src="/resources/testharnessreport.js"></script>
+        <script src="viewport_support.js"></script>
+    </head>
+    <body>
+    <h1>Viewport: Scroll - no page scale</h1>
+    <h4>Test Description: This test checks that window.visualViewport returns correct offset and scroll values without any pinch-zoom page scale applied.</h4>
+    <div id="complete-notice">
+        <p>window.visualViewport's offsetLeft and offsetTop is (<span id="scroll-offset-log"></span>).</p>
+        <p>window.visualViewport's pageLeft and pageTop is (<span id="scroll-page-log"></span>).</p>
+    </div>
+    <div id="log"></div>
+    </body>
+    <script>
+        // Add overflow we can scroll.
+        document.body.style.width = "5000px";
+        document.body.style.height = "5000px";
+
+        scrollTo(1000, 1200);
+
+        test(function() {
+              assert_equals(window.visualViewport.offsetLeft, 0);
+            }, "offsetLeft must be 0.");
+        test(function() {
+              assert_equals(window.visualViewport.offsetTop, 0);
+            }, "offsetTop must be 0.");
+        test(function() {
+              assert_equals(window.visualViewport.pageLeft, 1000);
+            }, "pageLeft must reflect location of viewport in document.");
+        test(function() {
+              assert_equals(window.visualViewport.pageTop, 1200);
+            }, "pageTop must reflect location of viewport in document.");
+
+        document.getElementById("scroll-offset-log").innerText = window.visualViewport.offsetLeft+ ", " + window.visualViewport.offsetTop;
+        document.getElementById("scroll-page-log").innerText = window.visualViewport.pageLeft + ", " + window.visualViewport.pageTop;
+
+        scrollTo(0, 0);
+    </script>
+</html>