test_import_from_sandbox.js

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"use strict";

function makeSandbox() {

  return Cu.Sandbox(

    Services.scriptSecurityManager.getSystemPrincipal(),

      wantXrays: false,

      wantGlobalProperties: ["ChromeUtils"],

      sandboxName: `Sandbox type used for ext-*.js  ExtensionAPI subscripts`,

);

// This tests the ESMification transition for extension API scripts.

add_task(function test_import_from_sandbox_transition() {

  let sandbox = makeSandbox();

  Object.assign(sandbox, {

    injected3: ChromeUtils.importESModule("resource://test/esmified-3.sys.mjs"),

});

  Services.scriptloader.loadSubScript("resource://test/api_script.js", sandbox);

  let tr = sandbox.testResults;

  Assert.equal(tr.injected3, 16, "Injected esmified-3.mjs has correct value.");

  Assert.equal(tr.module3, 16, "Iimported esmified-3.mjs has correct value.");

  Assert.ok(tr.sameInstance3, "Injected and imported are the same instance.");

  Assert.equal(tr.module4, 14, "Iimported esmified-4.mjs has correct value.");

});

// Same as above, just using a PrecompiledScript.

add_task(async function test_import_from_sandbox_transition() {

  let sandbox = makeSandbox();

  Object.assign(sandbox, {

    injected3: ChromeUtils.importESModule("resource://test/esmified-3.sys.mjs"),

});

  let script = await ChromeUtils.compileScript("resource://test/api_script.js");

  script.executeInGlobal(sandbox);

  let tr = sandbox.testResults;

  Assert.equal(tr.injected3, 22, "Injected esmified-3.mjs has correct value.");

  Assert.equal(tr.module3, 22, "Iimported esmified-3.mjs has correct value.");

  Assert.ok(tr.sameInstance3, "Injected and imported are the same instance.");

  Assert.equal(tr.module4, 18, "Iimported esmified-4.mjs has correct value.");

});