Bug 1758164 - Align the behavior of defining non-configurable properties on a WindowProxy on Nightly with Release/Beta; r=peterv

Differential Revision: https://phabricator.services.mozilla.com/D141732

dom/base/nsGlobalWindowOuter.cpp

@@ -574,28 +574,6 @@ void nsOuterWindowProxy::finalize(JS::GCContext* gcx, JSObject* proxy) const {
   }
 }
 
-/**
- * IsNonConfigurableReadonlyPrimitiveGlobalProp returns true for
- * property names that fit the following criteria:
- *
- * 1) The ES spec defines a property with that name on globals.
- * 2) The property is non-configurable.
- * 3) The property is non-writable (readonly).
- * 4) The value of the property is a primitive (so doesn't change
- *    observably on when navigation happens).
- *
- * Such properties can act as actual non-configurable properties on a
- * WindowProxy, because they are not affected by navigation.
- */
-#ifndef RELEASE_OR_BETA
-static bool IsNonConfigurableReadonlyPrimitiveGlobalProp(JSContext* cx,
-                                                         JS::Handle<jsid> id) {
-  return id == GetJSIDByIndex(cx, XPCJSContext::IDX_NAN) ||
-         id == GetJSIDByIndex(cx, XPCJSContext::IDX_UNDEFINED) ||
-         id == GetJSIDByIndex(cx, XPCJSContext::IDX_INFINITY);
-}
-#endif
-
 bool nsOuterWindowProxy::getOwnPropertyDescriptor(
     JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id,
     JS::MutableHandle<Maybe<JS::PropertyDescriptor>> desc) const {
@@ -651,7 +629,8 @@ bool nsOuterWindowProxy::getOwnPropertyDescriptor(
         return false;
       }
 
-#ifndef RELEASE_OR_BETA  // To be turned on in bug 1496510.
+#if 0
+      // See https://github.com/tc39/ecma262/issues/672 for more information.
       if (desc.isSome() &&
           !IsNonConfigurableReadonlyPrimitiveGlobalProp(cx, id)) {
         (*desc).setConfigurable(true);
@@ -768,7 +747,8 @@ bool nsOuterWindowProxy::definePropertySameOrigin(
     }
   }
 
-#ifndef RELEASE_OR_BETA  // To be turned on in bug 1496510.
+#if 0
+  // See https://github.com/tc39/ecma262/issues/672 for more information.
   if (desc.hasConfigurable() && !desc.configurable() &&
       !IsNonConfigurableReadonlyPrimitiveGlobalProp(cx, id)) {
     // Give callers a way to detect that they failed to "really" define a

dom/base/test/test_window_define_nonconfigurable.html

@@ -20,22 +20,13 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1107443
    */
   var retval = Object.defineProperty(window, "nosuchprop",
                                      { value: 5, configurable: false });
-  if (AppConstants.RELEASE_OR_BETA) {
   todo_is(retval, null,
           "Should return null when 'failing' to define non-configurable property via Object.defineProperty.")
-  } else {
-    is(retval, null,
-       "Should return null when 'failing' to define non-configurable property via Object.defineProperty.")
-  }
+
   var desc = Object.getOwnPropertyDescriptor(window, "nosuchprop");
   is(typeof(desc), "object", "Should have a property 'nosuchprop' now");
-  if (AppConstants.RELEASE_OR_BETA) {
   todo_is(desc.configurable, true,
           "Property 'nosuchprop' should be configurable");
-  } else {
-    is(desc.configurable, true,
-       "Property 'nosuchprop' should be configurable");
-  }
   is(desc.writable, false, "Property 'nosuchprop' should be readonly");
   is(desc.value, 5, "Property 'nosuchprop' should have the right value");
 
@@ -44,24 +35,14 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1107443
     "secondProp": { value: 2, configurable: false },
     "thirdProp": { value: 3 },
   });
-  if (AppConstants.RELEASE_OR_BETA) {
   todo_is(retval, null,
           "Should return null when 'failing' to define non-configurable property via Object.defineProperties.")
-  } else {
-    is(retval, null,
-       "Should return null when 'failing' to define non-configurable property via Object.defineProperties.")
-  }
   // The properties should all be defined.
   for (var [prop, val] of [["firstProp", 1], ["secondProp", 2], ["thirdProp", 3]]) {
     desc = Object.getOwnPropertyDescriptor(window, prop);
     is(typeof(desc), "object", `Should have a property '${prop}' now`);
-    if (AppConstants.RELEASE_OR_BETA) {
     todo_is(desc.configurable, true,
             `Property '${prop}' should be configurable`);
-    } else {
-      is(desc.configurable, true,
-	 `Property '${prop}' should be configurable`);
-    }
     is(desc.writable, false, `Property '${prop}' should be readonly`);
     is(desc.value, val, `Property '${prop}' should have the right value`);
   }
@@ -71,13 +52,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1107443
      "Should return object when succesfully defining 'nosuchprop2'");
   desc = Object.getOwnPropertyDescriptor(window, "nosuchprop2");
   is(typeof(desc), "object", "Should have a property 'nosuchprop2' now");
-  if (AppConstants.RELEASE_OR_BETA) {
   todo_is(desc.configurable, true,
           "Property 'nosuchprop2' should be configurable");
-  } else {
-    is(desc.configurable, true,
-       "Property 'nosuchprop2' should be configurable");
-  }
   is(desc.writable, false, "Property 'nosuchprop2' should be readonly");
   is(desc.value, 6, "Property 'nosuchprop2' should have the right value");
 
@@ -94,22 +70,12 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1107443
 
   retval = Reflect.defineProperty(window, "nosuchprop4",
                                   { value: 8, configurable: false });
-  if (AppConstants.RELEASE_OR_BETA) {
   todo_is(retval, false,
           "Should not be able to Reflect.defineProperty if non-configurable");
-  } else {
-    is(retval, false,
-       "Should not be able to Reflect.defineProperty if non-configurable");
-  }
   desc = Object.getOwnPropertyDescriptor(window, "nosuchprop4");
   is(typeof(desc), "object", "Should have a property 'nosuchprop4' now");
-  if (AppConstants.RELEASE_OR_BETA) {
   todo_is(desc.configurable, true,
           "Property 'nosuchprop4' should be configurable");
-  } else {
-    is(desc.configurable, true,
-       "Property 'nosuchprop4' should be configurable");
-  }
   is(desc.writable, false, "Property 'nosuchprop4' should be readonly");
   is(desc.value, 8, "Property 'nosuchprop4' should have the right value");
 
@@ -119,13 +85,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1107443
      "Should be able to Reflect.defineProperty with default configurability");
   desc = Object.getOwnPropertyDescriptor(window, "nosuchprop5");
   is(typeof(desc), "object", "Should have a property 'nosuchprop5' now");
-  if (AppConstants.RELEASE_OR_BETA) {
   todo_is(desc.configurable, true,
           "Property 'nosuchprop5' should be configurable");
-  } else {
-    is(desc.configurable, true,
-       "Property 'nosuchprop5' should be configurable");
-  }
   is(desc.writable, false, "Property 'nosuchprop5' should be readonly");
   is(desc.value, 9, "Property 'nosuchprop5' should have the right value");
 

js/src/tests/non262/lexical-environment/block-scoped-functions-annex-b-with.js

@@ -1,18 +1,10 @@
-if (typeof getBuildConfiguration === "undefined") {
-  var getBuildConfiguration = SpecialPowers.Cu.getJSTestingFunctions().getBuildConfiguration;
-}
-
-// Global functions are configurable in a browser environment on nightly.
-var functionDeclarationsConfigurable = typeof document !== "undefined" &&
-                                       !getBuildConfiguration().release_or_beta;
-
 var o = { f: "string-f" };
 with (o) {
   var desc = Object.getOwnPropertyDescriptor(this, "f");
   assertEq(desc.value, undefined);
   assertEq(desc.writable, true);
   assertEq(desc.enumerable, true);
-  assertEq(desc.configurable, functionDeclarationsConfigurable);
+  assertEq(desc.configurable, false);
   function f() {
     return "fun-f";
   }

testing/web-platform/meta/html/browsers/the-window-object/window-opener-unconfigurable.window.js.ini

@@ -1,5 +0,0 @@
-[window-opener-unconfigurable.window.html]
-  [Corner case: self.opener is set while it's not configurable]
-    expected:
-      if release_or_beta: PASS # bug 1496510
-      FAIL

testing/web-platform/meta/html/browsers/the-window-object/window-properties.https.html.ini

@@ -8,28 +8,3 @@
   [Window method: print]
     expected:
       if os == "android": FAIL
-
-  [Window unforgeable attribute: window]
-    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1510437
-    expected:
-      if release_or_beta: PASS
-      FAIL
-
-  [Window unforgeable attribute: document]
-    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1510437
-    expected:
-      if release_or_beta: PASS
-      FAIL
-
-  [Window unforgeable attribute: location]
-    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1510437
-    expected:
-      if release_or_beta: PASS
-      FAIL
-
-  [Window unforgeable attribute: top]
-    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1510437
-    expected:
-      if release_or_beta: PASS
-      FAIL
-

testing/web-platform/meta/html/browsers/the-windowproxy-exotic-object/windowproxy-define-own-property-unforgeable-same-origin.html.ini

@@ -1,33 +1,13 @@
 [windowproxy-define-own-property-unforgeable-same-origin.html]
-  [[[DefineOwnProperty\]\] success: "window"]
-    expected:
-      if release_or_beta: PASS
-      FAIL
-
   [[[DefineOwnProperty\]\] failure: "window"]
     expected: FAIL
 
-  [[[DefineOwnProperty\]\] success: "document"]
-    expected:
-      if release_or_beta: PASS
-      FAIL
-
   [[[DefineOwnProperty\]\] failure: "document"]
     expected: FAIL
 
-  [[[DefineOwnProperty\]\] success: "location"]
-    expected:
-      if release_or_beta: PASS
-      FAIL
-
   [[[DefineOwnProperty\]\] failure: "location"]
     expected: FAIL
 
-  [[[DefineOwnProperty\]\] success: "top"]
-    expected:
-      if release_or_beta: PASS
-      FAIL
-
   [[[DefineOwnProperty\]\] failure: "top"]
     expected: FAIL
 

testing/web-platform/meta/html/dom/idlharness.https.html.ini

@@ -468,33 +468,9 @@ prefs: [dom.security.featurePolicy.experimental.enabled:true, dom.security.featu
 
 
 [idlharness.https.html?include=(Document|Window)]
-  [Window interface: window must have own property "window"]
-    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1510437
-    expected:
-      if release_or_beta: PASS
-      FAIL
-
-  [Window interface: window must have own property "location"]
-    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1510437
-    expected:
-      if release_or_beta: PASS
-      FAIL
-
-  [Window interface: window must have own property "top"]
-    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1510437
-    expected:
-      if release_or_beta: PASS
-      FAIL
-
   [Document interface: new Document() must inherit property "oncancel" with the proper type]
     expected: FAIL
 
-  [Window interface: window must have own property "document"]
-    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1510437
-    expected:
-      if release_or_beta: PASS
-      FAIL
-
   [Document interface: attribute oncancel]
     expected: FAIL