browser_wasm-source-map.js

Enable keyboard shortcuts

/* Any copyright is dedicated to the Public Domain.

   http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

// Test source mappings WASM sources.

// This test is quite general and test various functions.

const {

  WasmRemap,

} = require("resource://devtools/client/shared/source-map-loader/utils/wasmRemap.js");

const {

  SourceMapConsumer,

} = require("resource://devtools/client/shared/vendor/source-map/source-map.js");

SourceMapConsumer.initialize({

  "lib/mappings.wasm":

    "resource://devtools/client/shared/vendor/source-map/lib/mappings.wasm",

});

add_task(async function smokeTest() {

  const testMap1 = {

    version: 3,

    file: "min.js",

    names: [],

    sources: ["one.js", "two.js"],

    sourceRoot: "/the/root",

    mappings: "CAAC,IAAM,SACU,GAAC",

};

  const testMap1Entries = [

    { offset: 1, line: 1, column: 1 },

    { offset: 5, line: 1, column: 7 },

    { offset: 14, line: 2, column: 17 },

    { offset: 17, line: 2, column: 18 },

];

  const map1 = await new SourceMapConsumer(testMap1);

  const remap1 = new WasmRemap(map1);

  is(remap1.file, "min.js");

  is(remap1.hasContentsOfAllSources(), false);

  is(remap1.sources.length, 2);

  is(remap1.sources[0], "/the/root/one.js");

  is(remap1.sources[1], "/the/root/two.js");

  const expectedEntries = testMap1Entries.slice(0);

  remap1.eachMapping(function (entry) {

    const expected = expectedEntries.shift();

    is(entry.generatedLine, expected.offset);

    is(entry.generatedColumn, 0);

    is(entry.originalLine, expected.line);

    is(entry.originalColumn, expected.column);

    is(entry.name, null);

});

  const pos1 = remap1.originalPositionFor({ line: 5, column: 0 });

  is(pos1.line, 1);

  is(pos1.column, 7);

  is(pos1.source, "/the/root/one.js");

  const pos2 = remap1.generatedPositionFor({

    source: "/the/root/one.js",

    line: 2,

    column: 18,

});

  is(pos2.line, 17);

  is(pos2.column, 0);

  is(pos2.lastColumn, undefined);

  remap1.computeColumnSpans();

  const pos3 = remap1.allGeneratedPositionsFor({

    source: "/the/root/one.js",

    line: 2,

    column: 17,

});

  is(pos3.length, 1);

  is(pos3[0].line, 14);

  is(pos3[0].column, 0);

  is(pos3[0].lastColumn, 0);

  map1.destroy();

});

add_task(async function contentPresents() {

  const testMap2 = {

    version: 3,

    file: "none.js",

    names: [],

    sources: ["zero.js"],

    mappings: "",

    sourcesContent: ["//test"],

};

  const map2 = await new SourceMapConsumer(testMap2);

  const remap2 = new WasmRemap(map2);

  is(remap2.file, "none.js");

  ok(remap2.hasContentsOfAllSources());

  is(remap2.sourceContentFor("zero.js"), "//test");

  map2.destroy();

});

add_task(async function readAndTransposeWasmMap() {

  const source = {

    id: "wasm.js",

    sourceMapBaseURL: "wasm:http://example.com/whatever/:min.js",

    sourceMapURL: `${URL_ROOT}fixtures/wasm.js.map`,

    isWasm: true,

};

  const urls = await gSourceMapLoader.getOriginalURLs(source);

  Assert.deepEqual(urls, [

      id: "wasm.js/originalSource-63954a1c231200652c0d99c6a69cd178",

      url: `${URL_ROOT}fixtures/one.js`,

},

]);

  const { line, column } = await gSourceMapLoader.getOriginalLocation({

    sourceId: source.id,

    line: 5,

});

  is(line, 1);

  is(column, 7);

});