@Test
public void testGetBusLineString() {

	assertNull(this.network.getBusLine("LINE1")); //$NON-NLS-1$
	assertNull(this.network.getBusLine("LINE2")); //$NON-NLS-1$
	assertNull(this.network.getBusLine("LINE3")); //$NON-NLS-1$
	initTest();
	assertSame(this.line1, this.network.getBusLine("LINE1")); //$NON-NLS-1$
	assertSame(this.line2, this.network.getBusLine("LINE2")); //$NON-NLS-1$
	assertNull(this.network.getBusLine("LINE3")); //$NON-NLS-1$
}