js/xpconnect/tests/chrome/test_cloneInto.xhtml

   1 <?xml version="1.0"?>
   2 <?xml-stylesheet type="text/css" href="chrome://global/skin"?>
   3 <?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"?>
   4 <window title="Mozilla Bug 503926"
   5         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
   6   <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
   7
   8   <!-- test results are displayed in the html:body -->
   9   <body xmlns="http://www.w3.org/1999/xhtml">
  10   <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=964293"
  11      target="_blank">Cu.cloneInto()</a>
  12   </body>
  13
  14   <!-- test code goes here -->
  15   <script type="application/javascript">
  16   <![CDATA[
  17
  18   const TypedArrayThings = [
  19     'Int8Array',
  20     'Uint8Array',
  21     'Uint8ClampedArray',
  22     'Int16Array',
  23     'Uint16Array',
  24     'Int32Array',
  25     'Uint32Array',
  26     'Float32Array',
  27     'Float64Array',
  28   ];
  29
  30   function checkThrows(f, msg, rgxp) {
  31     try {
  32       f();
  33       ok(false, "Should have thrown: " + msg);
  34     } catch (e) {
  35       ok(true, "Threw correctly - " + msg + " - " + e);
  36       if (rgxp)
  37         ok(rgxp.test(e), "Should throw correct exception: " + e);
  38     }
  39   }
  40
  41   function getType(a) {
  42     if (a === null || a === undefined)
  43       return 'null';
  44
  45     if (Array.isArray(a))
  46       return 'array';
  47
  48     if (File.isInstance(a))
  49       return 'file';
  50
  51     if (Blob.isInstance(a))
  52       return 'blob';
  53
  54     if (TypedArrayThings.includes(a.constructor.name))
  55       return a.constructor.name;
  56
  57     if (typeof a == 'object')
  58       return 'object';
  59
  60     if (typeof a == 'function')
  61       return 'function';
  62
  63     return 'primitive';
  64   }
  65
  66   function compare(a, b) {
  67     is (getType(a), getType(b), 'Type matches');
  68
  69     var type = getType(a);
  70     if (type == 'array') {
  71       is (a.length, b.length, 'Array.length matches');
  72       for (var i = 0; i < a.length; ++i) {
  73         compare(a[i], b[i]);
  74       }
  75
  76       return;
  77     }
  78
  79     if (type == 'file' || type == 'blob') {
  80       ok ( a === b, 'They should match');
  81       return;
  82     }
  83
  84     if (type == 'object') {
  85       ok ( a !== b, 'They should not match');
  86
  87       var aProps = [];
  88       for (let p in a) aProps.push(p);
  89
  90       var bProps = [];
  91       for (let p in b) bProps.push(p);
  92
  93       is (aProps.length, bProps.length, 'Props match');
  94       is (aProps.sort().toString(), bProps.sort().toString(), 'Props names match');
  95
  96       for (let p in a) {
  97         compare(a[p], b[p]);
  98       }
  99
 100       return;
 101     }
 102
 103     if (type == 'function') {
 104       ok ( a !== b, 'They should not match');
 105       return;
 106     }
 107
 108     if (type != 'null') {
 109       is (a, b, 'Same value');
 110     }
 111   }
 112
 113   var sandboxOptions = {
 114     wantXrays: true,
 115     wantExportHelpers: true,
 116   };
 117   var sandbox = new Cu.Sandbox(window, sandboxOptions);
 118   // The second sandbox is for testing the exportHelper version of the cloneInto
 119   var sandbox2 = new Cu.Sandbox("https://example.com", sandboxOptions);
 120   sandbox.sandbox2 = sandbox2;
 121   sandbox2.sandbox = sandbox;
 122
 123   function cloneAndTest(test) {
 124     var output = sandbox.test = Cu.cloneInto(test, sandbox);
 125     compare(test, output);
 126
 127     output = Cu.evalInSandbox('cloneInto(test, sandbox2)', sandbox);
 128     compare(test, output);
 129   }
 130
 131   function cloneAndTestWithFunctions(test) {
 132     var output = sandbox.test = Cu.cloneInto(test, sandbox, { cloneFunctions: true });
 133     compare(test, output);
 134
 135     output = Cu.evalInSandbox('cloneInto(test, sandbox2, { cloneFunctions: true })', sandbox);
 136     // Note - We need to waive here, because functions are filtered out by object Xrays.
 137     compare(test, Cu.waiveXrays(output));
 138   }
 139
 140   var tests = [
 141     1,
 142     null,
 143     true,
 144     'hello world',
 145     [1, 2, 3],
 146     { a: 1, b: 2 },
 147     new Date(),
 148     { a: 1, b: {}, c: [1, 2, 3, {} ], e: 'hello world' },
 149   ];
 150
 151   for (var i = 0; i < tests.length; ++i) {
 152     cloneAndTest(tests[i]);
 153   }
 154
 155   checkThrows(function() { Cu.cloneInto({ a() {} }, sandbox); },
 156               'Function should not be cloned by default');
 157
 158   checkThrows(function() { Cu.cloneInto({ a: document }, sandbox); },
 159               'Reflectors should not be wrapped by default');
 160
 161   var withReflectors = Cu.cloneInto({ doc: document, win: window }, sandbox,
 162                                     { wrapReflectors: true });
 163   is(Cu.unwaiveXrays(Cu.waiveXrays(withReflectors).doc), document, "Document passes");
 164   is(Cu.unwaiveXrays(Cu.waiveXrays(withReflectors).win), window, "Window passes");
 165
 166
 167   checkThrows(function() { Cu.evalInSandbox('cloneInto({}, sandbox)', sandbox2); },
 168               'CloneInto should only work on less privileged target scopes.',
 169               /denied|insecure/);
 170
 171   var cloneTarget = new Cu.Sandbox("https://example.com");
 172   var sameOriginSB = new Cu.Sandbox("https://example.com", { wantGlobalProperties: ['XMLHttpRequest'] });
 173   var crossOriginSB = new Cu.Sandbox("https://example.net", { wantGlobalProperties: ['XMLHttpRequest'] });
 174   sandbox2.cloneTarget = cloneTarget;
 175   sandbox2.soXHR = Cu.evalInSandbox('new XMLHttpRequest()', sameOriginSB);
 176   sandbox2.xoXHR = Cu.evalInSandbox('new XMLHttpRequest()', crossOriginSB);
 177   sandbox2.chromeDoc = document;
 178   Cu.evalInSandbox('function tryToClone(x) { return cloneInto({val: x}, cloneTarget, { wrapReflectors: true }).val; }', sandbox2);
 179   is(Cu.evalInSandbox('tryToClone(soXHR)', sandbox2), sandbox2.soXHR, 'Same-origin wrapReflectors works');
 180   checkThrows(function() { Cu.evalInSandbox('tryToClone(chromeDoc)', sandbox2); },
 181               'wrapReflectors may not wrap cross-origin reflectors', /unsupported value type/);
 182
 183
 184   var test = { a() { return 42; } };
 185   cloneAndTestWithFunctions(test);
 186
 187   // Check that inputs are properly passed through cloned functions:
 188   test = { a(obj) { return obj; } };
 189   var clonedTest = Cu.cloneInto(test, sandbox, {cloneFunctions: true});
 190   var testInput = {};
 191   is(clonedTest.a(testInput), testInput, "Objects should be identical");
 192   ]]>
 193   </script>
 194 </window>