The Tor Browser: toolkit/components/workerlz4/tests/xpcshell/data/worker_lz4.js@6474c204b198 (annotated)

toolkit/components/workerlz4/tests/xpcshell/data/worker_lz4.js@6474c204b198 (annotated)

toolkit/components/workerlz4/tests/xpcshell/data/worker_lz4.js

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 importScripts("resource://gre/modules/workers/require.js");
 importScripts("resource://gre/modules/osfile.jsm");
 function do_print(x) {
   //self.postMessage({kind: "do_print", args: [x]});
   dump("TEST-INFO: " + x + "\n");
 }
 function do_check_true(x) {
   self.postMessage({kind: "do_check_true", args: [!!x]});
   if (x) {
     dump("TEST-PASS: " + x + "\n");
   } else {
     throw new Error("do_check_true failed");
   }
 }
 function do_check_eq(a, b) {
   let result = a == b;
   self.postMessage({kind: "do_check_true", args: [result]});
   if (!result) {
     throw new Error("do_check_eq failed " + a + " != " + b);
   }
 }
 function do_test_complete() {
   self.postMessage({kind: "do_test_complete", args:[]});
 }
 self.onmessage = function() {
   try {
     run_test();
   } catch (ex) {
     let {message, moduleStack, moduleName, lineNumber} = ex;
     let error = new Error(message, moduleName, lineNumber);
     error.stack = moduleStack;
     dump("Uncaught error: " + error + "\n");
     dump("Full stack: " + moduleStack + "\n");
     throw error;
   }
 };
 let Lz4;
 let Internals;
 function test_import() {
   Lz4 = require("resource://gre/modules/workers/lz4.js");
   Internals = require("resource://gre/modules/workers/lz4_internal.js");
 }
 function test_bound() {
   for (let k of ["compress", "decompress", "maxCompressedSize"]) {
     try {
       do_print("Checking the existence of " + k + "\n");
       do_check_true(!!Internals[k]);
       do_print(k + " exists");
     } catch (ex) {
       // Ignore errors
       do_print(k + " doesn't exist!");
     }
   }
 }
 function test_reference_file() {
   do_print("Decompress reference file");
   let path = OS.Path.join("data", "compression.lz");
   let data = OS.File.read(path);
   let decompressed = Lz4.decompressFileContent(data);
   let text = (new TextDecoder()).decode(decompressed);
   do_check_eq(text, "Hello, lz4");
 }
 function compare_arrays(a, b) {
   return Array.prototype.join.call(a) == Array.prototype.join.call(a);
 }
 function run_rawcompression(name, array) {
   do_print("Raw compression test " + name);
   let length = array.byteLength;
   let compressedArray = new Uint8Array(Internals.maxCompressedSize(length));
   let compressedBytes = Internals.compress(array, length, compressedArray);
   compressedArray = new Uint8Array(compressedArray.buffer, 0, compressedBytes);
   do_print("Raw compressed: " + length + " into " + compressedBytes);
   let decompressedArray = new Uint8Array(length);
   let decompressedBytes = new ctypes.size_t();
   let success = Internals.decompress(compressedArray, compressedBytes,
                                      decompressedArray, length,
                                      decompressedBytes.address());
   do_print("Raw decompression success? " + success);
   do_print("Raw decompression size: " + decompressedBytes.value);
   do_check_true(compare_arrays(array, decompressedArray));
 }
 function run_filecompression(name, array) {
   do_print("File compression test " + name);
   let compressed = Lz4.compressFileContent(array);
   do_print("Compressed " + array.byteLength + " bytes into " + compressed.byteLength);
   let decompressed = Lz4.decompressFileContent(compressed);
   do_print("Decompressed " + compressed.byteLength + " bytes into " + decompressed.byteLength);
   do_check_true(compare_arrays(array, decompressed));
 }
 function run_faileddecompression(name, array) {
   do_print("invalid decompression test " + name);
   // Ensure that raw decompression doesn't segfault
   let length = 1 << 14;
   let decompressedArray = new Uint8Array(length);
   let decompressedBytes = new ctypes.size_t();
   Internals.decompress(array, array.byteLength,
     decompressedArray, length,
     decompressedBytes.address());
   // File decompression should fail with an acceptable exception
   let exn = null;
   try {
     Lz4.decompressFileContent(array);
   } catch (ex) {
     exn = ex;
   }
   do_check_true(exn);
   if (array.byteLength < 10) {
     do_check_true(exn.becauseLZNoHeader);
   } else {
     do_check_true(exn.becauseLZWrongMagicNumber);
   }
 }
 function run_test() {
   test_import();
   test_bound();
   test_reference_file();
   for (let length of [0, 1, 1024]) {
     let array = new Uint8Array(length);
     for (let i = 0; i < length; ++i) {
       array[i] = i % 256;
     }
     let name = length + " bytes";
     run_rawcompression(name, array);
     run_filecompression(name, array);
     run_faileddecompression(name, array);
   }
   do_test_complete();
 }