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Diffstat (limited to 'js/xpconnect/tests/chrome/test_private_field_cows.xhtml')
| -rw-r--r-- | js/xpconnect/tests/chrome/test_private_field_cows.xhtml | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/js/xpconnect/tests/chrome/test_private_field_cows.xhtml b/js/xpconnect/tests/chrome/test_private_field_cows.xhtml new file mode 100644 index 0000000000..24fe9d5e0a --- /dev/null +++ b/js/xpconnect/tests/chrome/test_private_field_cows.xhtml @@ -0,0 +1,131 @@ +<?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"?> + +<window title="Mozilla Bug ????" 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=>?????" target="_blank">Mozilla Bug ???? </a> + </body> + + <!-- test code goes here --> + <script type="application/javascript"><![CDATA[ + /* eslint-disable no-eval */ + + add_task(async () => { + var sandbox = new Cu.Sandbox("about:blank"); + + await SpecialPowers.pushPrefEnv({ + "set": [["security.allow_eval_with_system_principal", + true]] + }); + + 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', 'ok', 'info']; + TEST_API.forEach(function (name) { sandbox[name] = window[name]; }); + + + function COWTests() { + + var empty = {}; + var cow = getCOW(empty); + + // Because private fields may not be enabled, we construct A via the below eval of an IFFE, + // and return early if it syntax errors. + var A; + try { + A = eval(`(function(){ + class Base { + constructor(o) { + return o; + } + }; + + class A extends Base { + #x = 12; + static gx(o) { + return o.#x; + } + + static sx(o, v) { + o.#x = v; + } + }; + return A; + })();`); + } catch (e) { + is(e instanceof SyntaxError, true, "Syntax error: Private fields not enabled"); + is(/private fields are not currently supported/.test(e.message), true, "correct message"); + return; + } + + new A(empty); + is(A.gx(empty), 12, "Correct value read"); + A.sx(empty, 'wrapped'); + + function assertThrewInstance(f, error) { + var threw = true; + try { + f(); + threw = false; + } catch (e) { + is(e instanceof error, true, "Correct Error"); + } + is(threw, true, "Threw!"); + } + + // Note: These throw warnings: + // + // WARNING: Silently denied access to property ##x: Access to privileged JS object not permitted (@chrome://mochitests/content/chrome/js/xpconnect/tests/chrome/test_private_field_cows.xhtml:108:27): file /js/xpconnect/wrappers/XrayWrapper.cpp, line 226 + // + // It's not clear to me if we ougth to wire this up to -not-? I suspect this is a result of invoking + // the has + assertThrewInstance(() => A.gx(cow), TypeError); + assertThrewInstance(() => A.sx(cow, 'unwrapped'), TypeError); + assertThrewInstance(() => new A(cow), Error); + assertThrewInstance(() => A.gx(cow), TypeError); + } + + // 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 + }); + } + + // eslint-disable-next-line no-unused-vars + var unwrapped = Cu.evalInSandbox( + '(' + returnCOW.toString() + ')()', + sandbox + ); + + ok(true, "passed"); + }); + ]]></script> +</window> |