viewport-read-size-causes-layout.html

Enable keyboard shortcuts

This WPT test may be referenced by the following Test IDs:
- /visual-viewport/viewport-read-size-causes-layout.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta name="viewport" content="width=device-width, minimum-scale=1">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<style>

  html {

    height: 100%;

</style>

<h4>This test checks that requesting the viewport size causes any pending layout to occur.</h4>

<script>

  async_test(function(t) {

    window.onload = t.step_func(function() {

      assert_equals(window.visualViewport.width, document.documentElement.clientWidth,

          "window.visualViewport.width should match the window width.");

      assert_equals(visualViewport.height, document.documentElement.clientHeight,

          "window.visualViewport.height should match the window height.");

      // Add overflow so scrollbars appear.

      document.body.style.width = "2000px";

      document.body.style.height = "2000px";

      var viewportWidth = window.visualViewport.width;

      var viewportHeight = window.visualViewport.height;

      assert_equals(viewportWidth, document.documentElement.clientWidth,

          "Reading viewport width should cause a layout and exclude the new scrollbar.");

      assert_equals(viewportHeight, document.documentElement.clientHeight,

          "Reading viewport height should cause a layout and exclude the new scrollbar.");

      t.done();

});

});

</script>