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Diffstat (limited to 'js/xpconnect/tests/chrome/test_cows.xhtml')
| -rw-r--r-- | js/xpconnect/tests/chrome/test_cows.xhtml | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/js/xpconnect/tests/chrome/test_cows.xhtml b/js/xpconnect/tests/chrome/test_cows.xhtml new file mode 100644 index 0000000000..69d7d3e9e6 --- /dev/null +++ b/js/xpconnect/tests/chrome/test_cows.xhtml @@ -0,0 +1,207 @@ +<?xml version="1.0"?> +<?xml-stylesheet href="chrome://global/skin" type="text/css"?> +<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" + type="text/css"?> +<!-- +https://bugzilla.mozilla.org/show_bug.cgi?id=500931 +--> +<window title="Mozilla Bug 522764" + xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"> + <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script> + + <!-- test results are displayed in the html:body --> + <body xmlns="http://www.w3.org/1999/xhtml"> + <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=522764 " + target="_blank">Mozilla Bug 522764 </a> + </body> + + <!-- test code goes here --> + <script type="application/javascript"><![CDATA[ +add_task(async () => { +var sandbox = new Cu.Sandbox("about:blank"); + +await SpecialPowers.pushPrefEnv({"set": [["security.allow_eval_with_system_principal", + true]]}); + +/* eslint-disable no-eval */ + +function getCOW(x) { + if (typeof x != 'object' && typeof x != 'function') + return x; + x = Cu.waiveXrays(x); + var rval = {}; + if (typeof x == "function") + rval = eval(`(${x.toString()})`); + for (var i in x) { + if (x.__lookupGetter__(i)) + rval.__defineGetter__(i, eval(`(${x.__lookupGetter__(i).toString()})`)) + else + rval[i] = getCOW(x[i]); + } + return rval; +} + +// Give the sandbox a way to create ChromeObjectWrapped objects. +sandbox.getCOW = getCOW; + +// Define test API functions in the sandbox. +const TEST_API = ['is', 'isnot', 'ok', 'todo_is', 'todo_isnot', 'todo']; +TEST_API.forEach(function(name) { sandbox[name] = window[name]; }); + +sandbox.chromeGet = function (obj, prop) { return obj[prop]; }; + +function COWTests() { + function getNames(cow) { + let names = []; + for (let name in cow) { + names.push(name); + } + return names; + } + + // This function is actually stringified and run inside a + // sandbox with content privileges. + + // TODO: This could use some refactoring; creating helper + // functions like assertIsWritable(myObj, 'someproperty') might + // be useful. + + function isPropHidden(obj, propName, desc) { + try { + is(obj[propName], undefined, + "getting " + propName + " on " + desc + " should return undefined"); + ok(!(propName in obj), + propName + " on " + desc + " should act as if it doesn't exist"); + ok(!Object.hasOwnProperty.call(obj, propName), + propName + " on " + desc + " should act as if it doesn't exist"); + } catch (e) { + ok(false, "getting " + propName + " on " + desc + " threw " + e); + } + } + + const PROPS_TO_TEST = ['foo', 'bar', 'prototype']; + + var empty = {}; + var nonempty = {foo: 42, bar: 33}; + is(getCOW(empty).foo, undefined, + "shouldn't throw when accessing exposed properties that don't exist"); + + PROPS_TO_TEST.forEach(function(name) { + isPropHidden(getCOW(nonempty), name, "object without exposedProps"); + }); + + // Test function objects. + var func = function(x) { return 42; }; + func.foo = "foo property"; + var funcCOW = getCOW(func); + try { + funcCOW.foo; + ok(false, 'Functions are no longer COWable'); + } catch (e) { + ok(/denied|insecure/.test(e), 'Functions are no longer COWable'); + } + is(funcCOW(), 42, "Chrome functions should be callable"); + + // Test writable property + var writable = getCOW({}); + try { + ok(!("foo" in writable), + "non-existing write-only property shouldn't exist"); + writable.foo = 5; + ok(false, "writing to a write-only exposed prop should throw"); + } catch (e) { + ok(/Permission denied/.test(e), + "writing to a write-only exposed prop should throw the right error"); + } + is(writable.foo, undefined, + "reading from a write-only exposed prop should return undefined"); + try { + delete writable.foo; + ok(false, "deleting a write-only exposed prop should throw"); + } catch (e) { + ok(true, "deleting a write-only exposed prop should throw " + e); + } + + // Test readable property + var readable = { foo: 5, + bar: 6 }; + try { + isPropHidden(getCOW(readable), "foo", undefined, + "reading from a readable exposed prop shouldn't work"); + } catch (e) { + ok(false, "reading from a readable exposed prop shouldn't throw " + e); + } + try { + getCOW(readable).foo = 1; + ok(false, "writing to a read-only exposed prop should fail"); + } catch (e) { + ok(/Permission denied/.test(e), + "writing to a read-only exposed prop should fail"); + } + try { + delete getCOW(readable).foo; + ok(false, "deleting a read-only exposed prop shouldn't work"); + } catch (e) { + ok(/Permission denied/.test(e), + "deleting a read-only exposed prop should throw error"); + } + + try { + var props = getNames(getCOW(readable)); + is(props.length, 0, "COW w/ one exposed prop should not enumerate"); + } catch (e) { + ok(false, "COW w/ a readable prop should not raise exc " + + "on enumeration: " + e); + } + + // Test read/write property + var readwrite = getCOW({}); + try { + ok(!("foo" in readwrite), + "non-existing readwrite property shouldn't exist"); + readwrite.foo = 5; + ok(false, "writing to a readwrite exposed prop should throw"); + } catch (e) { + ok(/Permission denied/.test(e), + "writing to a readwrite exposed prop should throw the right error"); + } + try { + delete readwrite.foo; + ok(false, "deleting a readwrite prop should throw"); + } catch (e) { + ok(/Permission denied/.test(e), + "deleting a readwrite exposed prop should throw the right error"); + } + + // Readables and functions + try { + var COWFunc = getCOW((function() { return 5; })); + is(COWFunc(), 5, "COWed functions should be callable"); + } catch (e) { + todo(false, "COWed functions should not raise " + e); + } +} + +// Stringify the COW test suite and directly evaluate it in the sandbox. +Cu.evalInSandbox('(' + COWTests.toString() + ')()', sandbox); + +// Test that COWed objects passing from content to chrome get unwrapped. +function returnCOW() { + return getCOW({bar: 6}); +} + +var unwrapped = Cu.evalInSandbox( + '(' + returnCOW.toString() + ')()', + sandbox +); + +try { + is(unwrapped.bar, 6, + "COWs should be unwrapped when entering chrome space"); +} catch (e) { + todo(false, "COWs should be unwrapped when entering chrome space, " + + "not raise " + e); +} +}); + ]]></script> +</window> |