Remove QJSValue::instanceOf() function

Rationale: This is a remnant from QtScript. There is no good reason
for providing this type of low-level "prototype inheritance chain"
checks in this high-level QJSValue class. If you want to check if an
object is of the "right type", you can check if it has the
properties you require using property().

Task-number: QTBUG-23604
Change-Id: I3a274212cc57c38228fab73423af481e1b95d8a5
Reviewed-by: Simon Hausmann <simon.hausmann@nokia.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@nokia.com>

3 files changed, 2 insertions, 46 deletions

diff --git a/tests/auto/declarative/qjsengine/tst_qjsengine.cpp b/tests/auto/declarative/qjsengine/tst_qjsengine.cpp
index b24aad864c..2aed67aad1 100644
--- a/tests/auto/declarative/qjsengine/tst_qjsengine.cpp
+++ b/tests/auto/declarative/qjsengine/tst_qjsengine.cpp
@@ -4090,7 +4090,6 @@ void tst_QJSEngine::jsNumberClass()
         QVERIFY(ctor.property("POSITIVE_INFINITY").isNumber());
         QCOMPARE(ctor.propertyFlags("POSITIVE_INFINITY"), flags);
     }
-    QVERIFY(proto.instanceOf(eng.globalObject().property("Object")));
     QCOMPARE(proto.toNumber(), qreal(0));
     QVERIFY(proto.property("constructor").strictlyEquals(ctor));
 
diff --git a/tests/auto/declarative/qjsvalue/tst_qjsvalue.cpp b/tests/auto/declarative/qjsvalue/tst_qjsvalue.cpp
index c7396c9c28..88be29c1c2 100644
--- a/tests/auto/declarative/qjsvalue/tst_qjsvalue.cpp
+++ b/tests/auto/declarative/qjsvalue/tst_qjsvalue.cpp
@@ -1242,47 +1242,6 @@ void tst_QJSValue::toRegExp()
     QVERIFY(qjsvalue_cast<QRegExp>(eng.undefinedValue()).isEmpty());
 }
 
-void tst_QJSValue::instanceOf_twoEngines()
-{
-    QJSEngine eng;
-    QJSValue obj = eng.newObject();
-    QJSEngine otherEngine;
-    QTest::ignoreMessage(QtWarningMsg, "QJSValue::instanceof: cannot perform operation on a value created in a different engine");
-    QCOMPARE(obj.instanceOf(otherEngine.globalObject().property("Object")), false);
-}
-
-void tst_QJSValue::instanceOf()
-{
-    QJSEngine eng;
-    QJSValue obj = eng.newObject();
-    QCOMPARE(obj.instanceOf(eng.evaluate("Object.prototype")), false);
-    QCOMPARE(obj.instanceOf(eng.evaluate("Array.prototype")), false);
-    QCOMPARE(obj.instanceOf(eng.evaluate("Function.prototype")), false);
-    QCOMPARE(obj.instanceOf(eng.evaluate("QObject.prototype")), false);
-    QCOMPARE(obj.instanceOf(QJSValue(&eng, 123)), false);
-    QCOMPARE(obj.instanceOf(eng.undefinedValue()), false);
-    QCOMPARE(obj.instanceOf(eng.nullValue()), false);
-    QCOMPARE(obj.instanceOf(QJSValue()), false);
-
-    QCOMPARE(obj.instanceOf(eng.evaluate("Object")), true);
-    QCOMPARE(obj.instanceOf(eng.evaluate("Array")), false);
-    QCOMPARE(obj.instanceOf(eng.evaluate("Function")), false);
-    QCOMPARE(obj.instanceOf(eng.evaluate("QObject")), false);
-
-    QJSValue arr = eng.newArray();
-    QVERIFY(arr.isArray());
-    QCOMPARE(arr.instanceOf(eng.evaluate("Object.prototype")), false);
-    QCOMPARE(arr.instanceOf(eng.evaluate("Array.prototype")), false);
-    QCOMPARE(arr.instanceOf(eng.evaluate("Function.prototype")), false);
-    QCOMPARE(arr.instanceOf(eng.evaluate("QObject.prototype")), false);
-    QCOMPARE(arr.instanceOf(eng.evaluate("Object")), true);
-    QCOMPARE(arr.instanceOf(eng.evaluate("Array")), true);
-    QCOMPARE(arr.instanceOf(eng.evaluate("Function")), false);
-    QCOMPARE(arr.instanceOf(eng.evaluate("QObject")), false);
-
-    QCOMPARE(QJSValue().instanceOf(arr), false);
-}
-
 void tst_QJSValue::isArray_data()
 {
     newEngine();
@@ -2823,7 +2782,7 @@ void tst_QJSValue::construct_simple()
     QVERIFY(fun.isCallable());
     QJSValue ret = fun.callAsConstructor();
     QVERIFY(ret.isObject());
-    QVERIFY(ret.instanceOf(fun));
+    QVERIFY(ret.prototype().strictlyEquals(fun.property("prototype")));
     QCOMPARE(ret.property("foo").toInt(), 123);
 }
 
@@ -2835,7 +2794,7 @@ void tst_QJSValue::construct_newObjectJS()
     QVERIFY(fun.isCallable());
     QJSValue ret = fun.callAsConstructor();
     QVERIFY(ret.isObject());
-    QVERIFY(!ret.instanceOf(fun));
+    QVERIFY(!ret.prototype().strictlyEquals(fun.property("prototype")));
     QCOMPARE(ret.property("bar").toInt(), 456);
 }
 
diff --git a/tests/auto/declarative/qjsvalue/tst_qjsvalue.h b/tests/auto/declarative/qjsvalue/tst_qjsvalue.h
index b008377170..5fcd768e96 100644
--- a/tests/auto/declarative/qjsvalue/tst_qjsvalue.h
+++ b/tests/auto/declarative/qjsvalue/tst_qjsvalue.h
@@ -91,8 +91,6 @@ private slots:
     void toQObject();
     void toDateTime();
     void toRegExp();
-    void instanceOf_twoEngines();
-    void instanceOf();
     void isArray_data();
     void isArray();
     void isDate();