Unit Tests for QStateSet

Change-Id: I5d382c81bb9f15d4b322058c0039601abbd4d7c8
Reviewed-by: Andy Nichols <andy.nichols@theqtcompany.com>

3 files changed, 210 insertions, 1 deletions

diff --git a/tests/auto/render/qstateset/qstateset.pro b/tests/auto/render/qstateset/qstateset.pro
new file mode 100644
index 000000000..ca622c9db
--- /dev/null
+++ b/tests/auto/render/qstateset/qstateset.pro
@@ -0,0 +1,10 @@
+TEMPLATE = app
+
+TARGET = tst_qstateset
+QT += core-private 3dcore 3dcore-private 3drenderer 3drenderer-private testlib
+
+CONFIG += testcase
+
+SOURCES += tst_qstateset.cpp
+
+include(../commons/commons.pri)
diff --git a/tests/auto/render/qstateset/tst_qstateset.cpp b/tests/auto/render/qstateset/tst_qstateset.cpp
new file mode 100644
index 000000000..f6e1655c8
--- /dev/null
+++ b/tests/auto/render/qstateset/tst_qstateset.cpp
@@ -0,0 +1,198 @@
+/****************************************************************************
+**
+** 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/qstateset.h>
+#include <Qt3DRenderer/private/qrenderstate_p.h>
+#include <Qt3DRenderer/qrenderstate.h>
+
+#include "testpostmanarbiter.h"
+
+class MyStateSet;
+class MyStateSetPrivate : public Qt3DRender::QRenderStatePrivate
+{
+public :
+    MyStateSetPrivate()
+        : QRenderStatePrivate(Qt3DRender::QRenderState::DepthTest)
+    {}
+};
+
+
+class MyStateSet : public Qt3DRender::QRenderState
+{
+    Q_OBJECT
+public:
+    explicit MyStateSet(Qt3DCore::QNode *parent = Q_NULLPTR)
+        : Qt3DRender::QRenderState(*new MyStateSetPrivate(), parent)
+    {}
+
+    ~MyStateSet()
+    {
+        QNode::cleanup();
+    }
+
+private:
+    QT3D_CLONEABLE(MyStateSet)
+    Q_DECLARE_PRIVATE(MyStateSet)
+};
+
+// We need to call QNode::clone which is protected
+// So we sublcass QNode instead of QObject
+class tst_QStateSet: public Qt3DCore::QNode
+{
+    Q_OBJECT
+public:
+    ~tst_QStateSet()
+    {
+        QNode::cleanup();
+    }
+
+private Q_SLOTS:
+
+    void checkSaneDefaults()
+    {
+        QScopedPointer<Qt3DRender::QStateSet> defaultstateSet(new Qt3DRender::QStateSet);
+
+        QVERIFY(defaultstateSet->renderStates().isEmpty());
+    }
+
+    void checkCloning_data()
+    {
+        QTest::addColumn<Qt3DRender::QStateSet *>("stateSet");
+        QTest::addColumn<QList<Qt3DRender::QRenderState *> >("states");
+
+        Qt3DRender::QStateSet *defaultConstructed = new Qt3DRender::QStateSet();
+        QTest::newRow("defaultConstructed") << defaultConstructed << QList<Qt3DRender::QRenderState *>();
+
+        Qt3DRender::QStateSet *stateSetWithStates = new Qt3DRender::QStateSet();
+        Qt3DRender::QRenderState *state1 = new MyStateSet();
+        Qt3DRender::QRenderState *state2 = new MyStateSet();
+        QList<Qt3DRender::QRenderState *> states = QList<Qt3DRender::QRenderState *>() << state1 << state2;
+        stateSetWithStates->addRenderState(state1);
+        stateSetWithStates->addRenderState(state2);
+        QTest::newRow("stateSetWithStates") << stateSetWithStates << states;
+    }
+
+    void checkCloning()
+    {
+        // GIVEN
+        QFETCH(Qt3DRender::QStateSet*, stateSet);
+        QFETCH(QList<Qt3DRender::QRenderState *>, states);
+
+        // THEN
+        QCOMPARE(stateSet->renderStates(), states);
+
+        // WHEN
+        Qt3DRender::QStateSet *clone = static_cast<Qt3DRender::QStateSet *>(QNode::clone(stateSet));
+
+        // THEN
+        QVERIFY(clone != Q_NULLPTR);
+        QCOMPARE(stateSet->id(), clone->id());
+
+        QCOMPARE(stateSet->renderStates().count(), clone->renderStates().count());
+
+        for (int i = 0, m = states.count(); i < m; ++i) {
+            Qt3DRender::QRenderState *sClone = clone->renderStates().at(i);
+            Qt3DRender::QRenderState *sOrig = states.at(i);
+            QCOMPARE(sOrig->id(),sClone->id());
+            QVERIFY(sClone->parent() == clone);
+            QVERIFY(sOrig->parent() == stateSet);
+        }
+
+        delete stateSet;
+        delete clone;
+    }
+
+    void checkPropertyUpdates()
+    {
+        // GIVEN
+        QScopedPointer<Qt3DRender::QStateSet> stateSet(new Qt3DRender::QStateSet());
+        TestArbiter arbiter(stateSet.data());
+
+        // WHEN
+        Qt3DRender::QRenderState *state1 = new MyStateSet();
+        stateSet->addRenderState(state1);
+        QCoreApplication::processEvents();
+
+        // THEN
+        QCOMPARE(arbiter.events.size(), 1);
+        Qt3DCore::QScenePropertyChangePtr change = arbiter.events.first().staticCast<Qt3DCore::QScenePropertyChange>();
+        QCOMPARE(change->propertyName(), "renderState");
+        QCOMPARE(change->subjectId(), stateSet->id());
+        Qt3DCore::QNodePtr clonedState = change->value().value<Qt3DCore::QNodePtr>();
+        QVERIFY(!clonedState.isNull());
+        QCOMPARE(clonedState->id(), state1->id());
+        QCOMPARE(change->type(), Qt3DCore::NodeAdded);
+
+        arbiter.events.clear();
+
+        // WHEN
+        stateSet->addRenderState(state1);
+        QCoreApplication::processEvents();
+
+        // THEN
+        QCOMPARE(arbiter.events.size(), 0);
+
+        // WHEN
+        stateSet->removeRenderState(state1);
+        QCoreApplication::processEvents();
+
+        // THEN
+        QCOMPARE(arbiter.events.size(), 1);
+        change = arbiter.events.first().staticCast<Qt3DCore::QScenePropertyChange>();
+        QCOMPARE(change->propertyName(), "renderState");
+        QCOMPARE(change->subjectId(), stateSet->id());
+        QCOMPARE(change->value().value<Qt3DCore::QNodeId>(), state1->id());
+        QCOMPARE(change->type(), Qt3DCore::NodeRemoved);
+
+        arbiter.events.clear();
+    }
+
+protected:
+    Qt3DCore::QNode *doClone() const Q_DECL_OVERRIDE
+    {
+        return Q_NULLPTR;
+    }
+
+};
+
+QTEST_MAIN(tst_QStateSet)
+
+#include "tst_qstateset.moc"
diff --git a/tests/auto/render/render.pro b/tests/auto/render/render.pro
index ff195ca82..948a1e7af 100644
--- a/tests/auto/render/render.pro
+++ b/tests/auto/render/render.pro
@@ -30,5 +30,6 @@ contains(QT_CONFIG, private_tests) {
         qrenderpassfilter \
         qrendertargetselector \
         qsortcriterion \
-        qsortmethod
+        qsortmethod \
+        qstateset
 }