@Test
public void getHeaderFieldString() {

	assertEquals("text/plain", this.connection.getHeaderField("content-type"));   //$NON-NLS-1$ //$NON-NLS-2$
	assertEquals("25", this.connection.getHeaderField("content-length"));   //$NON-NLS-1$ //$NON-NLS-2$
	assertNotNull(this.connection.getHeaderField("last-modified"));  //$NON-NLS-1$
	assertNull(this.connection.getHeaderField("expires"));  //$NON-NLS-1$
}