tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

browser_viewport_resizing_minimum_scale.js (2012B)

      1 /* Any copyright is dedicated to the Public Domain.
      2   http://creativecommons.org/publicdomain/zero/1.0/ */
      3 
      4 "use strict";
      5 
      6 // Test viewport resizing, with and without meta viewport support.
      7 
      8 const TEST_URL =
      9  "data:text/html;charset=utf-8," +
     10  "<!DOCTYPE html>" +
     11  '<head><meta name="viewport" content="initial-scale=1.0, ' +
     12  'minimum-scale=1.0, width=device-width"></head>' +
     13  '<div style="width:100%;background-color:green">test</div>' +
     14  "</body>";
     15 addRDMTask(TEST_URL, async function ({ ui, manager }) {
     16  info("--- Starting viewport test output ---");
     17 
     18  // We're going to take a 300,600 viewport (before) and resize it
     19  // to 600,300 (after) and then resize it back. At the before and
     20  // after points, we'll measure zoom and the layout viewport width
     21  // and height.
     22  const expected = [
     23    {
     24      before: {
     25        zoom: 1.0,
     26        width: 300,
     27        height: 600,
     28      },
     29      after: {
     30        zoom: 1.0,
     31        width: 600,
     32        height: 300,
     33      },
     34    },
     35  ];
     36 
     37  for (const e of expected) {
     38    const b = e.before;
     39    const a = e.after;
     40 
     41    const message = "Meta Viewport ON";
     42 
     43    // Ensure meta viewport is set.
     44    info(message + " setting meta viewport support.");
     45    await setTouchAndMetaViewportSupport(ui, true);
     46 
     47    // Get to the initial size and check values.
     48    await setViewportSizeAndAwaitReflow(ui, manager, 300, 600);
     49    await testViewportZoomWidthAndHeight(
     50      message + " before resize",
     51      ui,
     52      b.zoom,
     53      b.width,
     54      b.height
     55    );
     56 
     57    // Move to the smaller size.
     58    await setViewportSizeAndAwaitReflow(ui, manager, 600, 300);
     59    await testViewportZoomWidthAndHeight(
     60      message + " after resize",
     61      ui,
     62      a.zoom,
     63      a.width,
     64      a.height
     65    );
     66 
     67    // Go back to the initial size and check again.
     68    await setViewportSizeAndAwaitReflow(ui, manager, 300, 600);
     69    await testViewportZoomWidthAndHeight(
     70      message + " return to initial size",
     71      ui,
     72      b.zoom,
     73      b.width,
     74      b.height
     75    );
     76  }
     77 });