tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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browser_locations.js (3563B)

      1 /* Any copyright is dedicated to the Public Domain.
      2   http://creativecommons.org/publicdomain/zero/1.0/ */
      3 
      4 "use strict";
      5 
      6 // Covert getOriginalLocation and getGeneratedLocation functions.
      7 
      8 add_task(async function testGetOriginalLocation() {
      9  await fetchFixtureSourceMap("bundle");
     10 
     11  const generatedLocation = {
     12    sourceId: "bundle.js",
     13    line: 49,
     14  };
     15 
     16  const originalLocation =
     17    await gSourceMapLoader.getOriginalLocation(generatedLocation);
     18  Assert.deepEqual(
     19    originalLocation,
     20    {
     21      column: 0,
     22      line: 3,
     23      sourceId: "bundle.js/originalSource-fe2c41d3535b76c158e39ba4f3ff826a",
     24      sourceUrl: "webpack:///entry.js",
     25    },
     26    "Mapped a generated location"
     27  );
     28 
     29  const originalLocation2 =
     30    await gSourceMapLoader.getOriginalLocation(originalLocation);
     31  Assert.deepEqual(originalLocation2, null, "No mapped location");
     32 
     33  gSourceMapLoader.clearSourceMaps();
     34  const originalLocation3 =
     35    await gSourceMapLoader.getOriginalLocation(generatedLocation);
     36  Assert.deepEqual(
     37    originalLocation3,
     38    null,
     39    "after clearing the source maps, the same generated location no longer maps"
     40  );
     41 });
     42 
     43 add_task(async function testGetGeneratedLocation() {
     44  await fetchFixtureSourceMap("bundle");
     45 
     46  const originalLocation = {
     47    column: 0,
     48    line: 3,
     49    sourceId: "bundle.js/originalSource-fe2c41d3535b76c158e39ba4f3ff826a",
     50  };
     51 
     52  const source = {
     53    url: "webpack:///entry.js",
     54    id: "bundle.js/originalSource-fe2c41d3535b76c158e39ba4f3ff826a",
     55  };
     56 
     57  const generatedLocation = await gSourceMapLoader.getGeneratedLocation(
     58    originalLocation,
     59    source
     60  );
     61  Assert.deepEqual(
     62    generatedLocation,
     63    {
     64      sourceId: "bundle.js",
     65      line: 49,
     66      column: 0,
     67    },
     68    "Map an original location"
     69  );
     70 
     71  {
     72    gSourceMapLoader.clearSourceMaps();
     73 
     74    const secondGeneratedLocation = await gSourceMapLoader.getGeneratedLocation(
     75      originalLocation,
     76      source
     77    );
     78    Assert.deepEqual(
     79      secondGeneratedLocation,
     80      null,
     81      "after clearing source maps, the same location no longer maps to an original location"
     82    );
     83  }
     84 
     85  {
     86    // we expect symmetric mappings, which means that if
     87    // we map a generated location to an original location,
     88    // and then map it back, we should get the original generated value.
     89    // e.g. G[8, 0] -> O[5, 4] -> G[8, 0]
     90    await fetchFixtureSourceMap("if.out");
     91 
     92    const genLoc1 = {
     93      sourceId: "if.out.js",
     94      column: 0,
     95      line: 8,
     96    };
     97 
     98    const ifSource = {
     99      url: "if.js",
    100      id: "if.out.js/originalSource-5ad3141023dae912c5f8833c7e03beeb",
    101    };
    102 
    103    const oLoc = await gSourceMapLoader.getOriginalLocation(genLoc1);
    104    const genLoc2 = await gSourceMapLoader.getGeneratedLocation(oLoc, ifSource);
    105 
    106    Assert.deepEqual(genLoc2, genLoc1, "location mapping is symmetric");
    107  }
    108 
    109  {
    110    // we expect that an undefined column will be handled like a
    111    // location w/ column 0. e.g. G[8, u] -> O[5, 4] -> G[8, 0]
    112    await fetchFixtureSourceMap("if.out");
    113 
    114    const genLoc1 = {
    115      sourceId: "if.out.js",
    116      column: undefined,
    117      line: 8,
    118    };
    119 
    120    const ifSource = {
    121      url: "if.js",
    122      id: "if.out.js/originalSource-5ad3141023dae912c5f8833c7e03beeb",
    123    };
    124 
    125    const oLoc = await gSourceMapLoader.getOriginalLocation(genLoc1);
    126    const genLoc2 = await gSourceMapLoader.getGeneratedLocation(oLoc, ifSource);
    127 
    128    Assert.deepEqual(
    129      genLoc2,
    130      {
    131        sourceId: "if.out.js",
    132        column: 0,
    133        line: 8,
    134      },
    135      "undefined column is handled like 0 column"
    136    );
    137  }
    138 });