Stumped on a regular expression

I'm having problems with a hook of validation after SVN to populate a problem tracking system.

Sorry for the bunch of a sample code, but I know that can be a bear help with regexes, and I hope that it will be easy for others see where I am going wrong. The default test is 'handleMultilineComments '. When I change the regex as shown, that passes test, but then the line 87 fails:
assertThat(firstCommentFrom("GEM:PROJID-2 Foo").text, is("Foo")); // expected "Foo", was "F"
Here's the default JUnit 4 test:
package com.yawmark;

import static org.junit.Assert.*;
import static org.hamcrest.CoreMatchers.*;

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.junit.Test;

public class RegexTest {
    
    static class Comment {
     int id;
     String text;
    }

    static class Comments {
     static final String REGEX = 
         "^"                        // start of the line
         + "GEM:"                   // the issue number prefix
         + ".*?"                    // the project ID, if it exists
         + "(\\d+)"                 // the digits of the issue number
         + "\\s+"                   // any whitespace
         + "(\\w.*)";               // any comment text up to the next issue number
//         + "(\\w.*?)(?:GEM:)?";     // <-- tried this, but failed on "Foo." (only captured F)

     static final Pattern PATTERN = Pattern.compile(REGEX, Pattern.MULTILINE | Pattern.DOTALL);

     static List<Comment> from(String message) {
         List<Comment> comments = new ArrayList<Comment>();
         if (isEmpty(message)) { return comments; }

         Matcher matcher = PATTERN.matcher(message);
         while (matcher.find()) {
          comments.add(buildCommentFrom(matcher));
         }
         
         return comments;
     }

     private static Comment buildCommentFrom(Matcher matcher) {
         Comment comment = new Comment();
         comment.id = Integer.parseInt(matcher.group(1));
         comment.text = matcher.group(2);
         return comment;
     }

     static boolean isEmpty(String message) {
         return message == null || message.length() == 0;
     }
    }
    
    private Comment firstCommentFrom(String message) {
     return Comments.from(message).get(0);
    }
    
    @Test
    public void shouldParseGoodIssueNumber() {
     assertThat(firstCommentFrom("GEM:PROJID-1\nX").id, is(1));
     assertThat(firstCommentFrom("GEM:PROJID-2\nX").id, is(2));
    }

    @Test
    public void shouldHandleDashesInProjectName() {
     assertThat(firstCommentFrom("GEM:PROJ-ID-42\nX").id, is(42));
    }

    @Test
    public void shouldHandleSpaceBetweenPrefixAndIssueId() {
     assertThat(firstCommentFrom("GEM: PROJID-137\nX").id, is(137));
    }

    @Test
    public void shouldHandleMissingProjectId() {
     assertThat(firstCommentFrom("GEM:1234\nX").id, is(1234));
     assertThat(firstCommentFrom("GEM: 5678\nX").id, is(5678));
    }

    @Test
    public void shouldHandleTrailingWhiteSpace() {
     assertThat(firstCommentFrom("GEM:PROJ-ID-1\nX").id, is(1));
     assertThat(firstCommentFrom("GEM:PROJ-ID-2 X").id, is(2));
    }

    @Test
    public void whiteSpaceAfterIssueNumberSignifiesCommentText() {
     assertThat(firstCommentFrom("GEM:PROJID-1\nX").text, is("X"));
     assertThat(firstCommentFrom("GEM:PROJID-2 Foo").text, is("Foo"));
     assertThat(firstCommentFrom("GEM:PROJID-2\tBar").text, is("Bar"));
    }

    @Test
    public void shouldHaveOnlyOneIssue() {
     assertThat(Comments.from("GEM:PROJID-42\nX").size(), is(1));
    }

    @Test
    public void shouldHandleMultilineComments() {
     assertThat(firstCommentFrom("GEM:PROJ-42\nX\nY").text, is("X\nY"));
     assertThat(firstCommentFrom("GEM:PROJ-42\nX\nY\nZ").text, is("X\nY\nZ"));
    }

    @Test
    public void handleMultipleComments() {
     assertThat(Comments.from("GEM:1\nX\nGEM:2\nY").size(), is(2));
    }
}
I would like to know if I can provide more information or if something needs to be clarified.

Thank you! 
         + "(\\w.*?)(?=GEM:|\\z)";               // any comment text up to the next issue number or end of input

Tags: Java

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