test_request-utils-parseJSON.js

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/* Any copyright is dedicated to the Public Domain.

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

// Test devtools/client/netmonitor/src/utils/request-utils.js function

// |parseJSON| ensure that it correctly handles plain JSON, Base 64

// encoded JSON, and JSON that has XSSI protection prepended to it

"use strict";

const { require } = ChromeUtils.importESModule(

  "resource://devtools/shared/loader/Loader.sys.mjs"

);

const {

  parseJSON,

} = require("resource://devtools/client/netmonitor/src/utils/request-utils.js");

function run_test() {

  const validJSON = '{"item":{"subitem":true},"seconditem":"bar"}';

  const base64JSON = btoa(validJSON);

  const parsedJSON = { item: { subitem: true }, seconditem: "bar" };

  const googleStyleXSSI = ")]}'\n";

  const facebookStyleXSSI = "for (;;);";

  const notRealXSSIPrevention = "sdgijsdjg";

  const while1XSSIPrevention = "while(1)";

  const parsedValidJSON = parseJSON(validJSON);

  info(JSON.stringify(parsedValidJSON));

ok(

    parsedValidJSON.json.item.subitem == parsedJSON.item.subitem &&

      parsedValidJSON.json.seconditem == parsedJSON.seconditem,

    "plain JSON is parsed correctly"

);

  const parsedBase64JSON = parseJSON(base64JSON);

ok(

    parsedBase64JSON.json.item.subitem === parsedJSON.item.subitem &&

      parsedBase64JSON.json.seconditem === parsedJSON.seconditem,

    "base64 encoded JSON is parsed correctly"

);

  const parsedGoogleStyleXSSIJSON = parseJSON(googleStyleXSSI + validJSON);

ok(

    parsedGoogleStyleXSSIJSON.strippedChars === googleStyleXSSI &&

      parsedGoogleStyleXSSIJSON.error === void 0 &&

      parsedGoogleStyleXSSIJSON.json.item.subitem === parsedJSON.item.subitem &&

      parsedGoogleStyleXSSIJSON.json.seconditem === parsedJSON.seconditem,

    "Google style XSSI sequence correctly removed and returned"

);

  const parsedFacebookStyleXSSIJSON = parseJSON(facebookStyleXSSI + validJSON);

ok(

    parsedFacebookStyleXSSIJSON.strippedChars === facebookStyleXSSI &&

      parsedFacebookStyleXSSIJSON.error === void 0 &&

      parsedFacebookStyleXSSIJSON.json.item.subitem ===

        parsedJSON.item.subitem &&

      parsedFacebookStyleXSSIJSON.json.seconditem === parsedJSON.seconditem,

    "Facebook style XSSI sequence correctly removed and returned"

);

  const parsedWhileXSSIJSON = parseJSON(while1XSSIPrevention + validJSON);

ok(

    parsedWhileXSSIJSON.strippedChars === while1XSSIPrevention &&

      parsedWhileXSSIJSON.error === void 0 &&

      parsedWhileXSSIJSON.json.item.subitem === parsedJSON.item.subitem &&

      parsedWhileXSSIJSON.json.seconditem === parsedJSON.seconditem,

    "While XSSI sequence correctly removed and returned"

);

  const parsedInvalidJson = parseJSON(notRealXSSIPrevention + validJSON);

ok(

    !parsedInvalidJson.json && !parsedInvalidJson.strippedChars,

    "Parsed invalid JSON does not return a data object or strippedChars"

);

  equal(

    parsedInvalidJson.error.name,

    "SyntaxError",

    "Parsing invalid JSON yeilds a SyntaxError"

);