@Test
public void testSendMessageHeaderThrowsNullPointerException1() throws Throwable {
BaseChannel bASE24Channel = new BASE24Channel("testBaseChannelHost", 100, new ISO87APackagerBBitmap());
try {
bASE24Channel.sendMessageHeader(null, 100);
fail("Expected NullPointerException to be thrown");
} catch (NullPointerException ex) {
assertNull("ex.getMessage()", ex.getMessage());
assertNull("(BASE24Channel) bASE24Channel.serverOut", ((BASE24Channel) bASE24Channel).serverOut);
}