Unit tests for QTransform

Change-Id: Iefe3f3afb8281a2eb994bfc8b63ca81500f66934
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>

3 files changed, 205 insertions, 1 deletions

diff --git a/tests/auto/core/core.pro b/tests/auto/core/core.pro
index 20b9423f6..3fb16b4d0 100644
--- a/tests/auto/core/core.pro
+++ b/tests/auto/core/core.pro
@@ -14,7 +14,8 @@ SUBDIRS = \
     qchangearbiter \
     qscene \
     qservicelocator \
-    qray3d
+    qray3d \
+    qtransform
 
 contains(QT_CONFIG, private_tests) {
     SUBDIRS += \
diff --git a/tests/auto/core/qtransform/qtransform.pro b/tests/auto/core/qtransform/qtransform.pro
new file mode 100644
index 000000000..88d30932c
--- /dev/null
+++ b/tests/auto/core/qtransform/qtransform.pro
@@ -0,0 +1,9 @@
+TARGET = tst_qtransform
+CONFIG += testcase
+TEMPLATE = app
+
+SOURCES += tst_qtransform.cpp
+
+QT += testlib 3dcore
+
+include(../../render/commons/commons.pri)
diff --git a/tests/auto/core/qtransform/tst_qtransform.cpp b/tests/auto/core/qtransform/tst_qtransform.cpp
new file mode 100644
index 000000000..906077b32
--- /dev/null
+++ b/tests/auto/core/qtransform/tst_qtransform.cpp
@@ -0,0 +1,194 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 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/QtTest>
+#include <Qt3DCore/qtransform.h>
+#include <Qt3DCore/qcomponent.h>
+#include <QtCore/qscopedpointer.h>
+#include "testpostmanarbiter.h"
+
+using namespace Qt3DCore;
+
+class tst_QTransform : public QNode
+{
+    Q_OBJECT
+public:
+    ~tst_QTransform()
+    {
+        QNode::cleanup();
+    }
+
+private Q_SLOTS:
+    void checkCloning_data()
+    {
+        QTest::addColumn<Qt3DCore::QTransform *>("transform");
+
+        Qt3DCore::QTransform *defaultConstructed = new Qt3DCore::QTransform();
+        QTest::newRow("defaultConstructed") << defaultConstructed;
+
+        Qt3DCore::QTransform *matrixPropertySet = new Qt3DCore::QTransform();
+        matrixPropertySet->setMatrix(Qt3DCore::QTransform::rotateAround(QVector3D(0.1877, 0.6868, 0.3884), 45.0, QVector3D(0, 0, 1)));
+        QTest::newRow("matrixPropertySet") << matrixPropertySet;
+
+        Qt3DCore::QTransform *translationSet = new Qt3DCore::QTransform();
+        translationSet->setTranslation(QVector3D(0.1877, 0.6868, 0.3884));
+        QTest::newRow("translationSet") << translationSet;
+
+        Qt3DCore::QTransform *scaleSet = new Qt3DCore::QTransform();
+        scaleSet->setScale3D(QVector3D(0.1, 0.6, 0.3));
+        QTest::newRow("scaleSet") << scaleSet;
+
+        Qt3DCore::QTransform *rotationSet = new Qt3DCore::QTransform();
+        scaleSet->setRotation(Qt3DCore::QTransform::fromAxisAndAngle(0.0f, 0.0f, 1.0f, 30.0f));
+        QTest::newRow("rotationSet") << rotationSet;
+    }
+
+    void checkCloning()
+    {
+        // GIVEN
+        QFETCH(Qt3DCore::QTransform *, transform);
+
+        // WHEN
+        Qt3DCore::QTransform *clone = static_cast<Qt3DCore::QTransform *>(QNode::clone(transform));
+
+        // THEN
+        QVERIFY(clone != Q_NULLPTR);
+
+        QCOMPARE(transform->id(), clone->id());
+        QCOMPARE(transform->matrix(), clone->matrix());
+        QCOMPARE(transform->translation(), clone->translation());
+        QCOMPARE(transform->scale3D(), clone->scale3D());
+        QCOMPARE(transform->scale(), clone->scale());
+        QCOMPARE(transform->rotation(), clone->rotation());
+    }
+
+    void checkPropertyUpdates()
+    {
+        // GIVEN
+        QScopedPointer<Qt3DCore::QTransform> transform(new Qt3DCore::QTransform());
+        TestArbiter arbiter(transform.data());
+
+        // WHEN
+        transform->setTranslation(QVector3D(454.0f, 427.0f, 383.0f));
+        QCoreApplication::processEvents();
+
+        // THEN
+        QCOMPARE(arbiter.events.size(), 1);
+        Qt3DCore::QScenePropertyChangePtr change = arbiter.events.first().staticCast<Qt3DCore::QScenePropertyChange>();
+        QCOMPARE(change->propertyName(), "translation");
+        QCOMPARE(change->value().value<QVector3D>(), QVector3D(454.0f, 427.0f, 383.0f));
+
+        arbiter.events.clear();
+
+        // WHEN
+        QQuaternion q = Qt3DCore::QTransform::fromAxisAndAngle(QVector3D(0.0f, 1.0f, 0.0f), 90.0f);
+        transform->setRotation(q);
+        QCoreApplication::processEvents();
+
+        // THEN
+        QCOMPARE(arbiter.events.size(), 1);
+        change = arbiter.events.first().staticCast<Qt3DCore::QScenePropertyChange>();
+        QCOMPARE(change->propertyName(), "rotation");
+        QCOMPARE(change->value().value<QQuaternion>(), q);
+
+        arbiter.events.clear();
+
+        // WHEN
+        transform->setScale3D(QVector3D(883.0f, 1200.0f, 1340.0f));
+        QCoreApplication::processEvents();
+
+        // THEN
+        QCOMPARE(arbiter.events.size(), 1);
+        change = arbiter.events.first().staticCast<Qt3DCore::QScenePropertyChange>();
+        QCOMPARE(change->propertyName(), "scale3D");
+        QCOMPARE(change->value().value<QVector3D>(), QVector3D(883.0f, 1200.0f, 1340.0f));
+
+        arbiter.events.clear();
+
+        // WHEN
+        // Force the transform to update its matrix
+        (void)transform->matrix();
+
+        transform->setMatrix(QMatrix4x4());
+        QCoreApplication::processEvents();
+
+        // THEN
+        QCOMPARE(arbiter.events.size(), 3);
+        change = arbiter.events.takeFirst().staticCast<Qt3DCore::QScenePropertyChange>();
+        QCOMPARE(change->propertyName(), "scale3D");
+        QCOMPARE(change->value().value<QVector3D>(), QVector3D(1.0f, 1.0f, 1.0f));
+        change = arbiter.events.takeFirst().staticCast<Qt3DCore::QScenePropertyChange>();
+        QCOMPARE(change->propertyName(), "rotation");
+        QCOMPARE(change->value().value<QQuaternion>(), QQuaternion());
+        change = arbiter.events.takeFirst().staticCast<Qt3DCore::QScenePropertyChange>();
+        QCOMPARE(change->propertyName(), "translation");
+        QCOMPARE(change->value().value<QVector3D>(), QVector3D());
+
+        arbiter.events.clear();
+    }
+
+    void checkCompositionDecomposition()
+    {
+        // GIVEN
+        Qt3DCore::QTransform t;
+        Qt3DCore::QTransform t2;
+        QMatrix4x4 m = Qt3DCore::QTransform::rotateAround(QVector3D(0.1877, 0.6868, 0.3884), 45.0, QVector3D(0, 0, 1));
+
+        // WHEN
+        t.setMatrix(m);
+        t2.setScale3D(t.scale3D());
+        t2.setRotation(t.rotation());
+        t2.setTranslation(t.translation());
+
+        // THEN
+        QCOMPARE(t.scale3D(), t2.scale3D());
+        QCOMPARE(t.rotation(), t2.rotation());
+        QCOMPARE(t.translation(), t2.translation());
+
+        // Note: t.matrix() != t2.matrix() since different matrices
+        // can result in the same scale, rotation, translation
+    }
+
+protected:
+    Qt3DCore::QNode *doClone() const Q_DECL_OVERRIDE
+    {
+        return Q_NULLPTR;
+    }
+};
+
+QTEST_MAIN(tst_QTransform)
+
+#include "tst_qtransform.moc"