dom/src/test/java/org/apache/james/mime4j/field/ContentLanguageFieldTest.java

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package org.apache.james.mime4j.field;

import java.util.List;

import org.apache.james.mime4j.MimeException;
import org.apache.james.mime4j.dom.field.ContentLanguageField;
import org.apache.james.mime4j.stream.RawField;
import org.apache.james.mime4j.stream.RawFieldParser;
import org.apache.james.mime4j.util.ByteSequence;
import org.apache.james.mime4j.util.ContentUtil;

import junit.framework.TestCase;

public class ContentLanguageFieldTest extends TestCase {

    static ContentLanguageField parse(final String s) throws MimeException {
        ByteSequence raw = ContentUtil.encode(s);
        RawField rawField = RawFieldParser.DEFAULT.parseField(raw);
        return ContentLanguageFieldImpl.PARSER.parse(rawField, null);
    }

    public void testGetLanguage() throws Exception {
        ContentLanguageField f = parse("Content-Language: en, de");
        List<String> langs = f.getLanguages();
        assertNotNull(langs);
        assertEquals(2, langs.size());
        assertEquals("en", langs.get(0));
        assertEquals("de", langs.get(1));
    }

    public void testGetLanguageWithComments() throws Exception {
        ContentLanguageField f = parse("Content-Language: en (yada yada), (blah blah)de");
        List<String> langs = f.getLanguages();
        assertNotNull(langs);
        assertEquals(2, langs.size());
        assertEquals("en", langs.get(0));
        assertEquals("de", langs.get(1));
    }

    public void testGetLanguageWithUnderscore() throws Exception {
        ContentLanguageField f = parse("Content-Language: en, en_GB (Great Britain)");
        List<String> langs = f.getLanguages();
        assertNotNull(langs);
        assertEquals(0, langs.size());
        assertNotNull(f.getParseException());
    }

    public void testGetLanguageWithEmptyElement() throws Exception {
        ContentLanguageField f = parse("Content-Language: en,, de");
        List<String> langs = f.getLanguages();
        assertNotNull(langs);
        assertEquals(0, langs.size());
        assertNotNull(f.getParseException());
    }

}