@Test
public void getPropertyCount_shouldReturnTwo() throws Exception {
pb.addProperty("test", "42");
pb.addProperty("number", 42);
assertTrue(pb.propertyCount() == 2);
}
@Test
public void removeAllProperties_shouldDeleteEverything() throws Exception {
pb.addProperty("test", "42");
pb.addProperty("number", 42);
pb.removeAllProperties();
assertTrue(pb.propertyCount() == 0);
}