tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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browser_viewport_resolution_restore.js (2213B)

      1 /* Any copyright is dedicated to the Public Domain.
      2   http://creativecommons.org/publicdomain/zero/1.0/ */
      3 
      4 "use strict";
      5 
      6 // Test that resolution is restored to its pre-RDM value after closing RDM.
      7 // Do this by using a chrome-only method to force resolution before opening
      8 // RDM, then letting RDM set its own preferred resolution due to the meta
      9 // viewport settings. When we close RDM and check resolution, we check for
     10 // something close to what we initially set, bracketed by these scaling
     11 // factors:
     12 const RESOLUTION_FACTOR_MIN = 0.96;
     13 const RESOLUTION_FACTOR_MAX = 1.04;
     14 
     15 info("--- Starting viewport test output ---");
     16 
     17 const WIDTH = 200;
     18 const HEIGHT = 200;
     19 const TESTS = [
     20  { content: "width=600" },
     21  { content: "width=600, initial-scale=1.0", res_restore: 0.782 },
     22  { content: "width=device-width", res_restore: 3.4 },
     23  { content: "width=device-width, initial-scale=2.0", res_restore: 1.1 },
     24 ];
     25 
     26 for (const { content, res_restore } of TESTS) {
     27  const TEST_URL =
     28    `data:text/html;charset=utf-8,` +
     29    `<html><head><meta name="viewport" content="${content}"></head>` +
     30    `<body><div style="width:100%;background-color:green">${content}</div>` +
     31    `</body></html>`;
     32 
     33  addRDMTaskWithPreAndPost(
     34    TEST_URL,
     35    async function rdmPreTask({ browser }) {
     36      if (res_restore) {
     37        info(`Setting resolution to ${res_restore}.`);
     38        browser.ownerGlobal.windowUtils.setResolutionAndScaleTo(res_restore);
     39      } else {
     40        info(`Not setting resolution.`);
     41      }
     42    },
     43    async function rdmTask({ ui, manager }) {
     44      info(`Resizing viewport and ensuring that meta viewport is on.`);
     45      await setViewportSize(ui, manager, WIDTH, HEIGHT);
     46      await setTouchAndMetaViewportSupport(ui, true);
     47    },
     48    async function rdmPostTask({ browser }) {
     49      const resolution = browser.ownerGlobal.windowUtils.getResolution();
     50      const res_target = res_restore ? res_restore : 1.0;
     51 
     52      const res_min = res_target * RESOLUTION_FACTOR_MIN;
     53      const res_max = res_target * RESOLUTION_FACTOR_MAX;
     54      ok(
     55        res_min <= resolution && res_max >= resolution,
     56        `${content} resolution should be near ${res_target}, and we got ${resolution}.`
     57      );
     58    }
     59  );
     60 }