### Question:
Composition { public int getVirtualWidth() { return virtualWidth; } Composition();  Composition(double frameRate);  Composition(int sceneWidth, int sceneHeight);  Composition(int sceneWidth, int sceneHeight, double frameRate);  Composition(int sceneWidth, int sceneHeight, double frameRate, Paint background); int getVirtualWidth(); int getVirtualHeight(); int getSceneWidth(); int getSceneHeight(); double getFactor(); TimeLine getTimeline(); VirtualScene getScene(); Paint getBackground(); Scene producePreviewScene(); Scene produceRendererScene();  }### Answer:
@Test void testVirtualSize() { Composition composition; composition = new Composition(1280, 720, 30); assertThat(composition.getVirtualWidth(), is(1920)); composition = new Composition(1280, 1280, 30); assertThat(composition.getVirtualWidth(), is(1080)); }