final String[] array = StringUtil.split("aaa\nbbb", "\n");
        assertEquals("1", 2, array.length);
        assertEquals("2", "aaa", array[0]);
        assertEquals("3", "bbb", array[1]);
    }

    /**
     *
     */
    @Test
    public void testSplit2() {
        final String[] array = StringUtil.split("aaa, bbb", ", ");
        assertEquals("1", 2, array.length);

    }

    /**
     * 文字列を分割します。
     *
     * @param str
     *            文字列
     * @param delim
     *            分割するためのデリミタ
     * @return 分割された文字列の配列
     */
    public static String[] split(final String str, final String delim) {
        if (isEmpty(str)) {
            return EMPTY_STRINGS;
        }
        final List<String> list = newArrayList();

        assertArgumentNotEmpty("path", path);

        File dir = null;
        final URL url = getResource(path);
        if ("file".equals(url.getProtocol())) {
            final int num = path.split("/").length;
            dir = new File(getFileName(url));
            for (int i = 0; i < num; ++i) {
                dir = dir.getParentFile();
            }
        } else {

    if (specialCases.containsKey(constantName)) {
      return specialCases.get(constantName);
    }
    List<String> parts = Lists.newArrayList();
    for (String part : SPLITTER.split(constantName)) {
      if (!uppercaseAcronyms.contains(part)) {
        part = part.charAt(0) + Ascii.toLowerCase(part.substring(1));
      }
      parts.add(part);
    }
    return JOINER.join(parts);
  }

                LifecycleMojo mojo = mojos.get(i);

                // Compute goal coordinates
                String groupId, artifactId, version, goal;
                String[] p = mojo.getGoal().trim().split(":");
                if (p.length == 3) {
                    // <groupId>:<artifactId>:<goal>
                    groupId = p[0];
                    artifactId = p[1];
                    version = null;

        paths.add(Paths.get(request.getLocalRepository().getBasedir()));
        String localRepoTail = mergedProps.get(MAVEN_REPO_LOCAL_TAIL);
        if (localRepoTail != null) {
            Arrays.stream(localRepoTail.split(","))
                    .filter(p -> p != null && !p.trim().isEmpty())
                    .map(Paths::get)
                    .forEach(paths::add);
        }

        assertArgumentNotNull("rootDir", rootDir);

        File baseDir = rootDir;
        if (baseDirectory != null) {
            for (final String name : baseDirectory.split("/")) {
                baseDir = new File(baseDir, name);
            }
        }
        return baseDir;
    }

    private static int compareModelVersions(String first, String second) {
        // we use a dedicated comparator because we control our model version scheme.
        String[] firstSegments = first.split("\\.");
        String[] secondSegments = second.split("\\.");
        for (int i = 0; i < Math.max(firstSegments.length, secondSegments.length); i++) {
            int result = Long.valueOf(i < firstSegments.length ? firstSegments[i] : "0")