Unit Tests for QRenderTargetSelector

Change-Id: I4140a239d3c08f7174926d4bb08e2d091ec682aa
Reviewed-by: Andy Nichols <andy.nichols@theqtcompany.com>

3 files changed, 221 insertions, 1 deletions

diff --git a/tests/auto/render/qrendertargetselector/qrendertargetselector.pro b/tests/auto/render/qrendertargetselector/qrendertargetselector.pro
new file mode 100644
index 000000000..e5939d54f
--- /dev/null
+++ b/tests/auto/render/qrendertargetselector/qrendertargetselector.pro
@@ -0,0 +1,10 @@
+TEMPLATE = app
+
+TARGET = tst_qrendertargetselector
+QT += core-private 3dcore 3dcore-private 3drenderer 3drenderer-private testlib
+
+CONFIG += testcase
+
+SOURCES += tst_qrendertargetselector.cpp
+
+include(../commons/commons.pri)
diff --git a/tests/auto/render/qrendertargetselector/tst_qrendertargetselector.cpp b/tests/auto/render/qrendertargetselector/tst_qrendertargetselector.cpp
new file mode 100644
index 000000000..aa4aac5f1
--- /dev/null
+++ b/tests/auto/render/qrendertargetselector/tst_qrendertargetselector.cpp
@@ -0,0 +1,209 @@
+/****************************************************************************
+**
+** 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/qrendertargetselector.h>
+#include <Qt3DRenderer/qrendertarget.h>
+#include "testpostmanarbiter.h"
+
+// We need to call QNode::clone which is protected
+// So we sublcass QNode instead of QObject
+class tst_QRenderTargetSelector: public Qt3DCore::QNode
+{
+    Q_OBJECT
+public:
+    ~tst_QRenderTargetSelector()
+    {
+        QNode::cleanup();
+    }
+
+private Q_SLOTS:
+
+    void checkSaneDefaults()
+    {
+        QScopedPointer<Qt3DRender::QRenderTargetSelector> defaultTargetSelector(new Qt3DRender::QRenderTargetSelector);
+
+        QVERIFY(defaultTargetSelector->target() == Q_NULLPTR);
+        QCOMPARE(defaultTargetSelector->drawBuffers().count(), 0);
+    }
+
+    void checkCloning_data()
+    {
+        QTest::addColumn<Qt3DRender::QRenderTargetSelector *>("renderTargetSelector");
+        QTest::addColumn<QList<Qt3DRender::QRenderAttachment::RenderAttachmentType> >("drawBuffers");
+        QTest::addColumn<Qt3DRender::QRenderTarget * >("target");
+
+        Qt3DRender::QRenderTargetSelector *defaultConstructed = new Qt3DRender::QRenderTargetSelector();
+        QTest::newRow("defaultConstructed") << defaultConstructed << QList<Qt3DRender::QRenderAttachment::RenderAttachmentType>() << static_cast<Qt3DRender::QRenderTarget *>(Q_NULLPTR);
+
+        Qt3DRender::QRenderTargetSelector *renderTargetSelectorWithTarget = new Qt3DRender::QRenderTargetSelector();
+        Qt3DRender::QRenderTarget *target1 = new Qt3DRender::QRenderTarget();
+        renderTargetSelectorWithTarget->setTarget(target1);
+        QTest::newRow("renderTargetSelectorWithTarget") << renderTargetSelectorWithTarget << QList<Qt3DRender::QRenderAttachment::RenderAttachmentType>() << target1;
+
+        Qt3DRender::QRenderTargetSelector *renderTargetSelectorWithTargetAndBuffers = new Qt3DRender::QRenderTargetSelector();
+        Qt3DRender::QRenderTarget *target2 = new Qt3DRender::QRenderTarget();
+        renderTargetSelectorWithTargetAndBuffers->setTarget(target2);
+        QList<Qt3DRender::QRenderAttachment::RenderAttachmentType> attachmentTypes = QList<Qt3DRender::QRenderAttachment::RenderAttachmentType>() << Qt3DRender::QRenderAttachment::ColorAttachment0 << Qt3DRender::QRenderAttachment::DepthAttachment;
+        renderTargetSelectorWithTargetAndBuffers->setDrawBuffers(attachmentTypes);
+        QTest::newRow("renderTargetSelectorWithTargetAndDrawBuffers") << renderTargetSelectorWithTargetAndBuffers << attachmentTypes << target2;
+    }
+
+    void checkCloning()
+    {
+        // GIVEN
+        QFETCH(Qt3DRender::QRenderTargetSelector*, renderTargetSelector);
+        QFETCH(QList<Qt3DRender::QRenderAttachment::RenderAttachmentType>, drawBuffers);
+        QFETCH(Qt3DRender::QRenderTarget *, target);
+
+        // THEN
+        QCOMPARE(renderTargetSelector->drawBuffers(), drawBuffers);
+        QCOMPARE(renderTargetSelector->target(), target);
+
+        // WHEN
+        Qt3DRender::QRenderTargetSelector *clone = static_cast<Qt3DRender::QRenderTargetSelector *>(QNode::clone(renderTargetSelector));
+
+        // THEN
+        QVERIFY(clone != Q_NULLPTR);
+        QCOMPARE(renderTargetSelector->id(), clone->id());
+
+        QCOMPARE(renderTargetSelector->drawBuffers(), clone->drawBuffers());
+
+        if (renderTargetSelector->target() != Q_NULLPTR) {
+            QVERIFY(clone->target() != Q_NULLPTR);
+            QCOMPARE(clone->target()->id(), renderTargetSelector->target()->id());
+        }
+
+        delete renderTargetSelector;
+        delete clone;
+    }
+
+    void checkPropertyUpdates()
+    {
+        // GIVEN
+        QScopedPointer<Qt3DRender::QRenderTargetSelector> renderTargetSelector(new Qt3DRender::QRenderTargetSelector());
+        TestArbiter arbiter(renderTargetSelector.data());
+
+        // WHEN
+        Qt3DRender::QRenderTarget *target = new Qt3DRender::QRenderTarget();
+        renderTargetSelector->setTarget(target);
+        QCoreApplication::processEvents();
+
+        // THEN
+        QCOMPARE(arbiter.events.size(), 1);
+        Qt3DCore::QScenePropertyChangePtr change = arbiter.events.first().staticCast<Qt3DCore::QScenePropertyChange>();
+        QCOMPARE(change->propertyName(), "target");
+        QCOMPARE(change->subjectId(), renderTargetSelector->id());
+        QCOMPARE(change->value().value<Qt3DCore::QNodeId>(), target->id());
+        QCOMPARE(change->type(), Qt3DCore::NodeUpdated);
+
+        arbiter.events.clear();
+
+        // WHEN
+        renderTargetSelector->setTarget(target);
+        QCoreApplication::processEvents();
+
+        // THEN
+        QCOMPARE(arbiter.events.size(), 0);
+
+        // WHEN
+        renderTargetSelector->setTarget(Q_NULLPTR);
+        QCoreApplication::processEvents();
+
+        // THEN
+        QCOMPARE(arbiter.events.size(), 1);
+        change = arbiter.events.first().staticCast<Qt3DCore::QScenePropertyChange>();
+        QCOMPARE(change->propertyName(), "target");
+        QCOMPARE(change->subjectId(), renderTargetSelector->id());
+        QCOMPARE(change->value().value<Qt3DCore::QNodeId>(), Qt3DCore::QNodeId());
+        QCOMPARE(change->type(), Qt3DCore::NodeUpdated);
+
+        arbiter.events.clear();
+
+        // WHEN
+        QList<Qt3DRender::QRenderAttachment::RenderAttachmentType> drawBuffers;
+        drawBuffers << Qt3DRender::QRenderAttachment::ColorAttachment0 << Qt3DRender::QRenderAttachment::DepthAttachment;
+        renderTargetSelector->setDrawBuffers(drawBuffers);
+        QCoreApplication::processEvents();
+
+        // THEN
+        QCOMPARE(arbiter.events.size(), 1);
+        change = arbiter.events.first().staticCast<Qt3DCore::QScenePropertyChange>();
+        QCOMPARE(change->propertyName(), "drawBuffers");
+        QCOMPARE(change->subjectId(), renderTargetSelector->id());
+        QCOMPARE(change->value().value<QList<Qt3DRender::QRenderAttachment::RenderAttachmentType> >(), drawBuffers);
+        QCOMPARE(change->type(), Qt3DCore::NodeUpdated);
+
+        arbiter.events.clear();
+
+        // WHEN
+        renderTargetSelector->setDrawBuffers(drawBuffers);
+        QCoreApplication::processEvents();
+
+        // THEN
+        QCOMPARE(arbiter.events.size(), 0);
+
+        // WHEN
+        renderTargetSelector->setDrawBuffers(QList<Qt3DRender::QRenderAttachment::RenderAttachmentType>());
+        QCoreApplication::processEvents();
+
+        // THEN
+        QCOMPARE(arbiter.events.size(), 1);
+        change = arbiter.events.first().staticCast<Qt3DCore::QScenePropertyChange>();
+        QCOMPARE(change->propertyName(), "drawBuffers");
+        QCOMPARE(change->subjectId(), renderTargetSelector->id());
+        QCOMPARE(change->value().value<QList<Qt3DRender::QRenderAttachment::RenderAttachmentType> >(), QList<Qt3DRender::QRenderAttachment::RenderAttachmentType>());
+        QCOMPARE(change->type(), Qt3DCore::NodeUpdated);
+
+
+        arbiter.events.clear();
+    }
+
+protected:
+    Qt3DCore::QNode *doClone() const Q_DECL_OVERRIDE
+    {
+        return Q_NULLPTR;
+    }
+
+};
+
+QTEST_MAIN(tst_QRenderTargetSelector)
+
+#include "tst_qrendertargetselector.moc"
diff --git a/tests/auto/render/render.pro b/tests/auto/render/render.pro
index 1cff56a9b..8a51a430d 100644
--- a/tests/auto/render/render.pro
+++ b/tests/auto/render/render.pro
@@ -27,5 +27,6 @@ contains(QT_CONFIG, private_tests) {
         qframegraphnode \
         qframegraph \
         qlayerfilter \
-        qrenderpassfilter
+        qrenderpassfilter \
+        qrendertargetselector
 }