Add Unit Test for QFrameGraph

Change-Id: I8a4fc3cdcce500d3079839f115fd38321bf6675a
Reviewed-by: Andy Nichols <andy.nichols@theqtcompany.com>

3 files changed, 204 insertions, 1 deletions

diff --git a/tests/auto/render/qframegraph/qframegraph.pro b/tests/auto/render/qframegraph/qframegraph.pro
new file mode 100644
index 000000000..3e89d8cd1
--- /dev/null
+++ b/tests/auto/render/qframegraph/qframegraph.pro
@@ -0,0 +1,10 @@
+TEMPLATE = app
+
+TARGET = tst_qframegraph
+QT += core-private 3dcore 3dcore-private 3drenderer 3drenderer-private testlib
+
+CONFIG += testcase
+
+SOURCES += tst_qframegraph.cpp
+
+include(../commons/commons.pri)
diff --git a/tests/auto/render/qframegraph/tst_qframegraph.cpp b/tests/auto/render/qframegraph/tst_qframegraph.cpp
new file mode 100644
index 000000000..ce6ed338c
--- /dev/null
+++ b/tests/auto/render/qframegraph/tst_qframegraph.cpp
@@ -0,0 +1,192 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt3D module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtTest/QTest>
+#include <Qt3DCore/private/qnode_p.h>
+#include <Qt3DCore/private/qscene_p.h>
+#include <Qt3DCore/qentity.h>
+
+#include <Qt3DRenderer/qframegraphnode.h>
+#include <Qt3DRenderer/qframegraph.h>
+
+#include "testpostmanarbiter.h"
+
+class MyFrameGraphNode : public Qt3DRender::QFrameGraphNode
+{
+    Q_OBJECT
+public:
+    explicit MyFrameGraphNode(Qt3DCore::QNode *parent = Q_NULLPTR)
+        : QFrameGraphNode(parent)
+    {
+    }
+
+    ~MyFrameGraphNode()
+    {
+        QNode::cleanup();
+    }
+
+private:
+    QT3D_CLONEABLE(MyFrameGraphNode)
+};
+
+// We need to call QNode::clone which is protected
+// So we sublcass QNode instead of QObject
+class tst_QFrameGraph: public Qt3DCore::QNode
+{
+    Q_OBJECT
+public:
+    ~tst_QFrameGraph()
+    {
+        QNode::cleanup();
+    }
+
+private Q_SLOTS:
+
+    void checkSaneDefaults()
+    {
+        QScopedPointer<Qt3DRender::QFrameGraph> defaultFrameGraph(new Qt3DRender::QFrameGraph);
+
+        QVERIFY(defaultFrameGraph->activeFrameGraph() == Q_NULLPTR);
+    }
+
+    void checkCloning_data()
+    {
+        QTest::addColumn<Qt3DRender::QFrameGraph *>("frameGraph");
+        QTest::addColumn<Qt3DRender::QFrameGraphNode *>("frameGraphTree");
+
+        Qt3DRender::QFrameGraph *defaultConstructed = new Qt3DRender::QFrameGraph();
+        QTest::newRow("defaultConstructed") << defaultConstructed << static_cast<Qt3DRender::QFrameGraphNode *>(Q_NULLPTR);
+
+        Qt3DRender::QFrameGraph *frameGraphWithActiveNode = new Qt3DRender::QFrameGraph();
+        Qt3DRender::QFrameGraphNode *frameGraphTree = new MyFrameGraphNode();
+        frameGraphWithActiveNode->setActiveFrameGraph(frameGraphTree);
+        QTest::newRow("frameGraphWithActiveTree") << frameGraphWithActiveNode << frameGraphTree;
+    }
+
+    void checkCloning()
+    {
+        // GIVEN
+        QFETCH(Qt3DRender::QFrameGraph*, frameGraph);
+        QFETCH(Qt3DRender::QFrameGraphNode *, frameGraphTree);
+
+        // THEN
+        QVERIFY(frameGraph->activeFrameGraph() == frameGraphTree);
+
+        // WHEN
+        Qt3DRender::QFrameGraph *clone = static_cast<Qt3DRender::QFrameGraph *>(QNode::clone(frameGraph));
+
+        // THEN
+        QVERIFY(clone != Q_NULLPTR);
+        QCOMPARE(frameGraph->id(), clone->id());
+
+        if (frameGraph->activeFrameGraph() != Q_NULLPTR) {
+            QVERIFY(frameGraph->activeFrameGraph()->parent() == frameGraph);
+            QVERIFY(clone->activeFrameGraph() != Q_NULLPTR);
+            QCOMPARE(clone->activeFrameGraph()->id(), frameGraph->activeFrameGraph()->id());
+            QVERIFY(clone->activeFrameGraph()->parent() == clone);
+        }
+
+        delete frameGraph;
+        delete clone;
+    }
+
+    void checkPropertyUpdates()
+    {
+        // GIVEN
+        QScopedPointer<Qt3DRender::QFrameGraph> frameGraph(new Qt3DRender::QFrameGraph());
+        TestArbiter arbiter(frameGraph.data());
+
+        // WHEN
+        MyFrameGraphNode *activeFrameGraph1 = new MyFrameGraphNode();
+        frameGraph->setActiveFrameGraph(activeFrameGraph1);
+        QCoreApplication::processEvents();
+
+        // THEN
+        QCOMPARE(arbiter.events.size(), 1);
+        Qt3DCore::QScenePropertyChangePtr change = arbiter.events.first().staticCast<Qt3DCore::QScenePropertyChange>();
+        QCOMPARE(change->propertyName(), "activeFrameGraph");
+        QCOMPARE(change->subjectId(), frameGraph->id());
+        QCOMPARE(change->value().value<Qt3DCore::QNodeId>(), activeFrameGraph1->id());
+        QCOMPARE(change->type(), Qt3DCore::NodeUpdated);
+
+        arbiter.events.clear();
+
+        // WHEN
+        frameGraph->setActiveFrameGraph(activeFrameGraph1);
+        QCoreApplication::processEvents();
+
+        // THEN
+        QCOMPARE(arbiter.events.size(), 0);
+
+        // WHEN
+        MyFrameGraphNode *activeFrameGraph2 = new MyFrameGraphNode();
+        frameGraph->setActiveFrameGraph(activeFrameGraph2);
+        QCoreApplication::processEvents();
+
+        // THEN
+        QCOMPARE(arbiter.events.size(), 1);
+        change = arbiter.events.first().staticCast<Qt3DCore::QScenePropertyChange>();
+        QCOMPARE(change->propertyName(), "activeFrameGraph");
+        QCOMPARE(change->subjectId(), frameGraph->id());
+        QCOMPARE(change->value().value<Qt3DCore::QNodeId>(), activeFrameGraph2->id());
+        QCOMPARE(change->type(), Qt3DCore::NodeUpdated);
+
+        arbiter.events.clear();
+
+        // WHEN
+        frameGraph->setActiveFrameGraph(Q_NULLPTR);
+        QCoreApplication::processEvents();
+
+        // THEN
+        QCOMPARE(arbiter.events.size(), 1);
+        change = arbiter.events.first().staticCast<Qt3DCore::QScenePropertyChange>();
+        QCOMPARE(change->propertyName(), "activeFrameGraph");
+        QCOMPARE(change->subjectId(), frameGraph->id());
+        QCOMPARE(change->value().value<Qt3DCore::QNodeId>(), Qt3DCore::QNodeId());
+        QCOMPARE(change->type(), Qt3DCore::NodeUpdated);
+    }
+
+protected:
+    Qt3DCore::QNode *doClone() const Q_DECL_OVERRIDE
+    {
+        return Q_NULLPTR;
+    }
+
+};
+
+QTEST_MAIN(tst_QFrameGraph)
+
+#include "tst_qframegraph.moc"
diff --git a/tests/auto/render/render.pro b/tests/auto/render/render.pro
index b0b890f77..c3865f90e 100644
--- a/tests/auto/render/render.pro
+++ b/tests/auto/render/render.pro
@@ -24,5 +24,6 @@ contains(QT_CONFIG, private_tests) {
         raycasting \
         qcameraselector \
         qclearbuffer \
-        qframegraphnode
+        qframegraphnode \
+        qframegraph
 }