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package javax.mail.internet;

import java.util.Properties;

import javax.mail.Session;
import javax.mail.internet.AddressException;
import javax.mail.internet.MimeMessage;

import org.junit.*;
import static org.junit.Assert.assertEquals;

/**
 * Test the MimeMultipart.addFrom method, for bug 5057742.
 */
public class AddFromTest {
 
    private static final Session s = Session.getInstance(new Properties());
    private static final String ADDR = "a@example.com";
    private static final InternetAddress iaddr;
    private static final InternetAddress[] addresses;
    static {
	InternetAddress ia = null;
	try {
	    ia = new InternetAddress(ADDR);
	} catch (AddressException ex) {
	    // can't happen
	} finally {
	    iaddr = ia;
	}
	addresses = new InternetAddress[] { iaddr };
    }

    @Test
    public void testNoFrom() throws Exception {
        MimeMessage m = new MimeMessage(s);
	m.addFrom(addresses);
	assertEquals("Number of From headers", 1, m.getHeader("From").length);
	assertEquals("From header", ADDR, m.getHeader("From", ","));
    }

    @Test
    public void testOneFrom() throws Exception {
        MimeMessage m = new MimeMessage(s);
	m.setFrom(iaddr);
	m.addFrom(addresses);
	assertEquals("Number of From headers", 1, m.getHeader("From").length);
	assertEquals("From header", ADDR + ", " + ADDR,
	    m.getHeader("From", ","));
    }
}