Add basic unit tests for texture classes

Change-Id: Ia3cfdbc085204dba45019394996bcd09fe415bd8
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>

3 files changed, 248 insertions, 0 deletions

diff --git a/tests/auto/render/render.pro b/tests/auto/render/render.pro
index be5a39d2c..3c9f4d462 100644
--- a/tests/auto/render/render.pro
+++ b/tests/auto/render/render.pro
@@ -7,6 +7,7 @@ contains(QT_CONFIG, private_tests) {
         renderpass \
         qgraphicsutils \
         shader \
+        texture \
         renderviewutils \
         renderviews \
         material \
diff --git a/tests/auto/render/texture/texture.pro b/tests/auto/render/texture/texture.pro
new file mode 100644
index 000000000..04231844f
--- /dev/null
+++ b/tests/auto/render/texture/texture.pro
@@ -0,0 +1,12 @@
+TEMPLATE = app
+
+TARGET = tst_texture
+
+QT += core-private 3dcore 3dcore-private 3drender 3drender-private testlib
+
+CONFIG += testcase
+
+SOURCES += tst_texture.cpp
+
+include(../../core/common/common.pri)
+include(../commons/commons.pri)
diff --git a/tests/auto/render/texture/tst_texture.cpp b/tests/auto/render/texture/tst_texture.cpp
new file mode 100644
index 000000000..0594909c1
--- /dev/null
+++ b/tests/auto/render/texture/tst_texture.cpp
@@ -0,0 +1,235 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 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 <Qt3DCore/qdynamicpropertyupdatedchange.h>
+#include <Qt3DRender/private/texture_p.h>
+
+#include "testpostmanarbiter.h"
+#include "testrenderer.h"
+
+class DummyTexture : public Qt3DRender::QAbstractTexture
+{
+    Q_OBJECT
+
+public:
+    explicit DummyTexture(Qt3DCore::QNode *parent = nullptr)
+        : QAbstractTexture(TargetAutomatic, parent)
+    {
+    }
+};
+
+class tst_RenderTexture : public Qt3DCore::QBackendNodeTester
+{
+    Q_OBJECT
+
+private:
+    template <typename FrontendTextureType, Qt3DRender::QAbstractTexture::Target Target>
+    void checkPropertyMirroring();
+
+private slots:
+    void checkFrontendPropertyNotifications();
+    void checkPropertyMirroring();
+    void checkPropertyChanges();
+};
+
+void tst_RenderTexture::checkFrontendPropertyNotifications()
+{
+    // GIVEN
+    TestArbiter arbiter;
+    DummyTexture texture;
+    arbiter.setArbiterOnNode(&texture);
+
+    // WHEN
+    texture.setWidth(512);
+    QCoreApplication::processEvents();
+
+    // THEN
+    QCOMPARE(arbiter.events.size(), 1);
+    Qt3DCore::QPropertyUpdatedChangePtr change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
+    QCOMPARE(change->propertyName(), "width");
+    QCOMPARE(change->value().value<int>(), 512);
+    QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);
+
+    arbiter.events.clear();
+
+    // WHEN
+    texture.setWidth(512);
+    QCoreApplication::processEvents();
+
+    // THEN
+    QCOMPARE(arbiter.events.size(), 0);
+
+    // WHEN
+    texture.setHeight(256);
+    QCoreApplication::processEvents();
+
+    // THEN
+    QCOMPARE(arbiter.events.size(), 1);
+    change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
+    QCOMPARE(change->propertyName(), "height");
+    QCOMPARE(change->value().value<int>(), 256);
+    QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);
+
+    arbiter.events.clear();
+
+    // WHEN
+    texture.setHeight(256);
+    QCoreApplication::processEvents();
+
+    // THEN
+    QCOMPARE(arbiter.events.size(), 0);
+
+    // WHEN
+    texture.setDepth(128);
+    QCoreApplication::processEvents();
+
+    // THEN
+    QCOMPARE(arbiter.events.size(), 1);
+    change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
+    QCOMPARE(change->propertyName(), "depth");
+    QCOMPARE(change->value().value<int>(), 128);
+    QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);
+
+    arbiter.events.clear();
+
+    // WHEN
+    texture.setDepth(128);
+    QCoreApplication::processEvents();
+
+    // THEN
+    QCOMPARE(arbiter.events.size(), 0);
+
+    // WHEN
+    texture.setLayers(16);
+    QCoreApplication::processEvents();
+
+    // THEN
+    QCOMPARE(arbiter.events.size(), 1);
+    change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
+    QCOMPARE(change->propertyName(), "layers");
+    QCOMPARE(change->value().value<int>(), 16);
+    QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);
+
+    arbiter.events.clear();
+
+    // WHEN
+    texture.setLayers(16);
+    QCoreApplication::processEvents();
+
+    // THEN
+    QCOMPARE(arbiter.events.size(), 0);
+}
+
+template <typename FrontendTextureType, Qt3DRender::QAbstractTexture::Target Target>
+void tst_RenderTexture::checkPropertyMirroring()
+{
+    // GIVEN
+    Qt3DRender::Render::Texture backend;
+
+    FrontendTextureType frontend;
+    frontend.setWidth(256);
+    frontend.setHeight(128);
+    frontend.setDepth(16);
+    frontend.setLayers(8);
+
+    // WHEN
+    simulateInitialization(&frontend, &backend);
+
+    // THEN
+    QCOMPARE(backend.peerId(), frontend.id());
+    QCOMPARE(backend.target(), Target);
+    QCOMPARE(backend.width(), frontend.width());
+    QCOMPARE(backend.height(), frontend.height());
+    QCOMPARE(backend.depth(), frontend.depth());
+    QCOMPARE(backend.layers(), frontend.layers());
+}
+
+void tst_RenderTexture::checkPropertyMirroring()
+{
+    checkPropertyMirroring<Qt3DRender::QTexture1D, Qt3DRender::QAbstractTexture::Target1D>();
+    checkPropertyMirroring<Qt3DRender::QTexture1DArray, Qt3DRender::QAbstractTexture::Target1DArray>();
+    checkPropertyMirroring<Qt3DRender::QTexture2D, Qt3DRender::QAbstractTexture::Target2D>();
+    checkPropertyMirroring<Qt3DRender::QTexture2DArray, Qt3DRender::QAbstractTexture::Target2DArray>();
+    checkPropertyMirroring<Qt3DRender::QTexture3D, Qt3DRender::QAbstractTexture::Target3D>();
+    checkPropertyMirroring<Qt3DRender::QTextureCubeMap, Qt3DRender::QAbstractTexture::TargetCubeMap>();
+    checkPropertyMirroring<Qt3DRender::QTextureCubeMapArray, Qt3DRender::QAbstractTexture::TargetCubeMapArray>();
+    checkPropertyMirroring<Qt3DRender::QTexture2DMultisample, Qt3DRender::QAbstractTexture::Target2DMultisample>();
+    checkPropertyMirroring<Qt3DRender::QTexture2DMultisampleArray, Qt3DRender::QAbstractTexture::Target2DMultisampleArray>();
+    checkPropertyMirroring<Qt3DRender::QTextureRectangle, Qt3DRender::QAbstractTexture::TargetRectangle>();
+    checkPropertyMirroring<Qt3DRender::QTextureBuffer, Qt3DRender::QAbstractTexture::TargetBuffer>();
+}
+
+void tst_RenderTexture::checkPropertyChanges()
+{
+    // GIVEN
+    TestRenderer renderer;
+    Qt3DRender::Render::Texture backend;
+    backend.setRenderer(&renderer);
+
+    // WHEN
+    Qt3DCore::QPropertyUpdatedChangePtr updateChange(new Qt3DCore::QPropertyUpdatedChange(Qt3DCore::QNodeId()));
+    updateChange->setValue(256);
+    updateChange->setPropertyName("width");
+    backend.sceneChangeEvent(updateChange);
+
+    // THEN
+    QCOMPARE(backend.width(), 256);
+
+    // WHEN
+    updateChange.reset(new Qt3DCore::QPropertyUpdatedChange(Qt3DCore::QNodeId()));
+    updateChange->setValue(128);
+    updateChange->setPropertyName("height");
+    backend.sceneChangeEvent(updateChange);
+
+    // THEN
+    QCOMPARE(backend.height(), 128);
+
+    // WHEN
+    updateChange.reset(new Qt3DCore::QPropertyUpdatedChange(Qt3DCore::QNodeId()));
+    updateChange->setValue(16);
+    updateChange->setPropertyName("depth");
+    backend.sceneChangeEvent(updateChange);
+
+    // THEN
+    QCOMPARE(backend.depth(), 16);
+
+    // WHEN
+    updateChange.reset(new Qt3DCore::QPropertyUpdatedChange(Qt3DCore::QNodeId()));
+    updateChange->setValue(32);
+    updateChange->setPropertyName("layers");
+    backend.sceneChangeEvent(updateChange);
+
+    // THEN
+    QCOMPARE(backend.layers(), 32);
+}
+
+QTEST_APPLESS_MAIN(tst_RenderTexture)
+
+#include "tst_texture.moc"