qt-everywhere-src-5.15.1/qtquick3d/tests/auto/quick3d/qquick3dorthographiccamera/tst_qquick3dorthographiccamera.cpp

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#include <QTest>
#include <QSignalSpy>
#include <QtQuick3D/private/qquick3dorthographiccamera_p.h>
#include <QtQuick3DRuntimeRender/private/qssgrendercamera_p.h>

class tst_QQuick3DOrthographicCamera : public QObject
{
    Q_OBJECT

    // Work-around to get access to updateSpatialNode
    class Camera : public QQuick3DOrthographicCamera
    {
    public:
        using QQuick3DCamera::updateSpatialNode;
    };

private slots:
    void testClip();
};

void tst_QQuick3DOrthographicCamera::testClip()
{
    Camera camera;
    auto node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(nullptr));
    const auto originalNode = node; // for comparisons later...
    QVERIFY(node);

    const float clipNear = 0.2f;
    camera.setClipNear(clipNear);
    node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(node));
    QCOMPARE(originalNode, node);
    QVERIFY(node->flags.testFlag(QSSGRenderNode::Flag::CameraDirty));
    QCOMPARE(clipNear, node->clipNear);

    const float clipFar = 0.4f;
    camera.setClipFar(clipFar);
    node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(node));
    QCOMPARE(originalNode, node);
    QVERIFY(node->flags.testFlag(QSSGRenderNode::Flag::CameraDirty));
    QCOMPARE(clipFar, node->clipFar);
}

QTEST_APPLESS_MAIN(tst_QQuick3DOrthographicCamera)
#include "tst_qquick3dorthographiccamera.moc"