apache-mime4j-0.6/src/test/java/org/apache/james/mime4j/field/mimeversion/MimeVersionParserTest.java

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package org.apache.james.mime4j.field.mimeversion;

import java.io.StringReader;

import junit.framework.TestCase;

import org.apache.james.mime4j.field.mimeversion.parser.MimeVersionParser;
import org.apache.james.mime4j.field.mimeversion.parser.ParseException;

public class MimeVersionParserTest extends TestCase {

    @Override
    protected void setUp() throws Exception {
        super.setUp();
    }

    @Override
    protected void tearDown() throws Exception {
        super.tearDown();
    }

    public void testPlainLine() throws Exception {
        check("2.4", 2, 4);
        check("25.344", 25, 344);
        check("0.1", 0, 1);
        check("123234234.0", 123234234, 0);
    }
    
    public void testLineWithComments() throws Exception {
        check("2(A comment).4", 2, 4);
        check("2(.8).4", 2, 4);
        check("(A comment)2.4", 2, 4);
        check("2.4(A comment)", 2, 4);
        check("2.(A comment)4", 2, 4);
    }
    
    public void testLineWithNestedComments() throws Exception {
        check("2(4.45 ( Another ()comment () blah (Wobble(mix)))Whatever).4", 2, 4);
    }
    
    public void testEmptyLine() throws Exception {
        try {
            parse("(This is just a comment)");
            fail("Expected exception to be thrown");
        } catch (ParseException e) {
            //expected
        }
    }
    
    private void check(String input, int expectedMajorVersion, int expectedMinorVersion) throws Exception {
        MimeVersionParser parser = parse(input);
        assertEquals("Major version number", expectedMajorVersion, parser.getMajorVersion());
        assertEquals("Minor version number", expectedMinorVersion, parser.getMinorVersion());
    }

    private MimeVersionParser parse(String input) throws ParseException {
        MimeVersionParser parser = new MimeVersionParser(new StringReader(input));
        parser.parseAll();
        return parser;
    }
}