@Test
    public void testSaveWithNullParent() throws IOException {
        File file = new File("someFile.txt");
        try {
            exporter.save(material, file);
            Assert.assertTrue(file.exists());
        } finally {
            file.delete();
        }
    }
Tests the methods on classes that implements the JmeExporter interface.
jme3-plugins/src/test/java/com/jme3/export/JmeExporterTest.java