Add m-esr52 at 52.6.0

1 files changed, 98 insertions, 0 deletions

diff --git a/js/src/jsapi-tests/testLookup.cpp b/js/src/jsapi-tests/testLookup.cpp
new file mode 100644
index 000000000..22fb16185
--- /dev/null
+++ b/js/src/jsapi-tests/testLookup.cpp
@@ -0,0 +1,98 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "jsfun.h"  // for js::IsInternalFunctionObject
+
+#include "jsapi-tests/tests.h"
+
+#include "jsobjinlines.h"
+
+BEGIN_TEST(testLookup_bug522590)
+{
+    // Define a function that makes method-bearing objects.
+    JS::RootedValue x(cx);
+    EXEC("function mkobj() { return {f: function () {return 2;}} }");
+
+    // Calling mkobj() multiple times must create multiple functions in ES5.
+    EVAL("mkobj().f !== mkobj().f", &x);
+    CHECK(x.isTrue());
+
+    // Now make x.f a method.
+    EVAL("mkobj()", &x);
+    JS::RootedObject xobj(cx, x.toObjectOrNull());
+
+    // This lookup must not return an internal function object.
+    JS::RootedValue r(cx);
+    CHECK(JS_GetProperty(cx, xobj, "f", &r));
+    CHECK(r.isObject());
+    JSObject* funobj = &r.toObject();
+    CHECK(funobj->is<JSFunction>());
+    CHECK(!js::IsInternalFunctionObject(*funobj));
+
+    return true;
+}
+END_TEST(testLookup_bug522590)
+
+static const JSClass DocumentAllClass = {
+    "DocumentAll",
+    JSCLASS_EMULATES_UNDEFINED
+};
+
+bool
+document_resolve(JSContext* cx, JS::HandleObject obj, JS::HandleId id, bool* resolvedp)
+{
+    // If id is "all", resolve document.all=true.
+    JS::RootedValue v(cx);
+    if (!JS_IdToValue(cx, id, &v))
+        return false;
+
+    if (v.isString()) {
+        JSString* str = v.toString();
+        JSFlatString* flatStr = JS_FlattenString(cx, str);
+        if (!flatStr)
+            return false;
+        if (JS_FlatStringEqualsAscii(flatStr, "all")) {
+            JS::Rooted<JSObject*> docAll(cx, JS_NewObject(cx, &DocumentAllClass));
+            if (!docAll)
+                return false;
+
+            JS::Rooted<JS::Value> allValue(cx, JS::ObjectValue(*docAll));
+            if (!JS_DefinePropertyById(cx, obj, id, allValue, JSPROP_RESOLVING))
+                return false;
+
+            *resolvedp = true;
+            return true;
+        }
+    }
+
+    *resolvedp = false;
+    return true;
+}
+
+static const JSClassOps document_classOps = {
+    nullptr, nullptr, nullptr, nullptr,
+    nullptr, document_resolve, nullptr
+};
+
+static const JSClass document_class = {
+    "document", 0,
+    &document_classOps
+};
+
+BEGIN_TEST(testLookup_bug570195)
+{
+    JS::RootedObject obj(cx, JS_NewObject(cx, &document_class));
+    CHECK(obj);
+    CHECK(JS_DefineProperty(cx, global, "document", obj, 0));
+    JS::RootedValue v(cx);
+    EVAL("document.all ? true : false", &v);
+    CHECK(v.isFalse());
+    EVAL("document.hasOwnProperty('all')", &v);
+    CHECK(v.isTrue());
+    return true;
+}
+END_TEST(testLookup_bug570195)