Add unit tests for scene loader

Change-Id: I9cbb718347605b5ea048e9f37251817339b42412
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

3 files changed, 171 insertions, 1 deletions

diff --git a/tests/auto/render/render.pro b/tests/auto/render/render.pro
index 12a15fc41..9a89015f1 100644
--- a/tests/auto/render/render.pro
+++ b/tests/auto/render/render.pro
@@ -52,5 +52,6 @@ contains(QT_CONFIG, private_tests) {
         qgraphicsapifilter \
         qrendersurfaceselector \
         sortpolicy \
-        qcuboidgeometry
+        qcuboidgeometry \
+        sceneloader
 }
diff --git a/tests/auto/render/sceneloader/sceneloader.pro b/tests/auto/render/sceneloader/sceneloader.pro
new file mode 100644
index 000000000..0ea616545
--- /dev/null
+++ b/tests/auto/render/sceneloader/sceneloader.pro
@@ -0,0 +1,12 @@
+TEMPLATE = app
+
+TARGET = tst_sceneloader
+
+QT += 3dcore 3dcore-private 3drender 3drender-private testlib
+
+CONFIG += testcase
+
+SOURCES += tst_sceneloader.cpp
+
+include(../../core/common/common.pri)
+include(../commons/commons.pri)
diff --git a/tests/auto/render/sceneloader/tst_sceneloader.cpp b/tests/auto/render/sceneloader/tst_sceneloader.cpp
new file mode 100644
index 000000000..7d31590d9
--- /dev/null
+++ b/tests/auto/render/sceneloader/tst_sceneloader.cpp
@@ -0,0 +1,157 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt3D module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtTest/QTest>
+#include <qbackendnodetester.h>
+#include <Qt3DRender/qsceneloader.h>
+#include <Qt3DRender/private/scene_p.h>
+#include <Qt3DRender/private/scenemanager_p.h>
+#include <Qt3DCore/qpropertyupdatedchange.h>
+#include <Qt3DCore/private/qbackendnode_p.h>
+#include <Qt3DCore/private/qentity_p.h>
+#include "testpostmanarbiter.h"
+#include "testrenderer.h"
+
+class tst_SceneLoader : public Qt3DCore::QBackendNodeTester
+{
+    Q_OBJECT
+private Q_SLOTS:
+
+    void checkInitialAndCleanedUpState()
+    {
+        // GIVEN
+        Qt3DRender::Render::Scene sceneLoader;
+        Qt3DRender::Render::SceneManager sceneManager;
+
+        // THEN
+        QVERIFY(sceneLoader.source().isEmpty());
+        QVERIFY(sceneLoader.peerId().isNull());
+        QVERIFY(sceneManager.pendingSceneLoaderJobs().isEmpty());
+
+
+        // GIVEN
+        Qt3DRender::QSceneLoader frontendSceneLoader;
+        const QUrl newUrl(QStringLiteral("CorvetteMuseum"));
+        frontendSceneLoader.setSource(newUrl);
+
+        // WHEN
+        sceneLoader.setSceneManager(&sceneManager);
+        simulateInitialization(&frontendSceneLoader, &sceneLoader);
+
+        // THEN
+        QVERIFY(!sceneLoader.peerId().isNull());
+        QCOMPARE(sceneLoader.source(), newUrl);
+
+        // WHEN
+        sceneLoader.cleanup();
+
+        // THEN
+        QVERIFY(sceneLoader.source().isEmpty());
+    }
+
+    void checkPeerPropertyMirroring()
+    {
+        // GIVEN
+        Qt3DRender::QSceneLoader frontendSceneLoader;
+        frontendSceneLoader.setSource(QUrl(QStringLiteral("CorvetteMuseum")));
+
+        Qt3DRender::Render::Scene sceneLoader;
+        Qt3DRender::Render::SceneManager sceneManager;
+
+        // WHEN
+        sceneLoader.setSceneManager(&sceneManager);
+        simulateInitialization(&frontendSceneLoader, &sceneLoader);
+
+        // THEN
+        QCOMPARE(sceneLoader.peerId(), frontendSceneLoader.id());
+        QCOMPARE(sceneLoader.source(), frontendSceneLoader.source());
+        QVERIFY(!sceneManager.pendingSceneLoaderJobs().isEmpty());
+    }
+
+    void checkPropertyChanges()
+    {
+        // GIVEN
+        TestRenderer renderer;
+        Qt3DRender::Render::Scene sceneLoader;
+        Qt3DRender::Render::SceneManager sceneManager;
+
+        sceneLoader.setRenderer(&renderer);
+        sceneLoader.setSceneManager(&sceneManager);
+
+        // THEN
+        QVERIFY(sceneManager.pendingSceneLoaderJobs().isEmpty());
+
+        // WHEN
+        Qt3DCore::QPropertyUpdatedChangePtr updateChange(new Qt3DCore::QPropertyUpdatedChange(Qt3DCore::QNodeId()));
+        const QUrl newUrl(QStringLiteral("Bownling_Green_KY"));
+        updateChange->setValue(newUrl);
+        updateChange->setPropertyName("source");
+        sceneLoader.sceneChangeEvent(updateChange);
+
+        // THEN
+        QCOMPARE(sceneLoader.source(), newUrl);
+        QVERIFY(!sceneManager.pendingSceneLoaderJobs().isEmpty());
+
+        // WHEN
+        updateChange.reset(new Qt3DCore::QPropertyUpdatedChange(Qt3DCore::QNodeId()));
+        updateChange->setValue(false);
+        updateChange->setPropertyName("enabled");
+        sceneLoader.sceneChangeEvent(updateChange);
+
+        // THEN
+        QCOMPARE(sceneLoader.isEnabled(), false);
+    }
+
+    void checkSubtreeTransmission()
+    {
+        // GIVEN
+        TestRenderer renderer;
+        TestArbiter arbiter;
+        Qt3DRender::Render::Scene sceneLoader;
+
+        Qt3DCore::QBackendNodePrivate::get(&sceneLoader)->setArbiter(&arbiter);
+        sceneLoader.setRenderer(&renderer);
+
+        // WHEN
+        Qt3DCore::QEntity subtree;
+        sceneLoader.setSceneSubtree(&subtree);
+
+        // THEN
+        Qt3DCore::QPropertyUpdatedChangePtr change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
+        QCOMPARE(arbiter.events.count(), 1);
+        QCOMPARE(change->propertyName(), "scene");
+        QCOMPARE(change->value().value<Qt3DCore::QEntity *>(), &subtree);
+
+        arbiter.events.clear();
+    }
+};
+
+// Note: setSceneSubtree needs a QCoreApplication
+QTEST_MAIN(tst_SceneLoader)
+
+#include "tst_sceneloader.moc"