/**
 * A stub dependency graph that is custom-made for testing concurrent build graph evaluations.
 * <p>
 * Implements a graph as follows:
 * A has no dependencies
 * B depends on A
 * C depends on A
 * X depends on B &amp; C
 * Y depends on B
 * Z depends on C
 * </p>
 *
 */
public class ProjectDependencyGraphStub implements ProjectDependencyGraph {
    public static final MavenProject A = new MavenProject();

  private static final Escaper HTML_ESCAPER =
      Escapers.builder()
          .addEscape('"', """)
          // Note: "'" is not defined in HTML 4.01.
          .addEscape('\'', "'")
          .addEscape('&', "&")
          .addEscape('<', "&lt;")
          .addEscape('>', "&gt;")
          .build();

  private HtmlEscapers() {}

                if (value != null) {
                    // we're going to parse this back in as XML so we need to escape XML markup
                    value = value.toString()
                            .replace("&", "&")
                            .replace("<", "&lt;")
                            .replace(">", "&gt;");
                    return value;
                }
                return null;
            }
        });

    private static final String END_HTML_COMMENT = "-->";
    private static final Map<String, String> ENTITIES = new HashMap<String, String>();

    static {
        ENTITIES.put("amp", "&");
        ENTITIES.put("lt", "<");
        ENTITIES.put("gt", ">");
        ENTITIES.put("quot", "\"");
        ENTITIES.put("apos", "'");
    }

    private final JavadocScanner scanner;

     * @throws IOException Model read problem
     */
    @Test
    void testUrls() throws Exception {
        testInheritance("urls");
    }

    /**
     * Flat directory structure: parent & child POMs in sibling directories, child directory == artifactId.
     * @throws IOException Model read problem
     */
    @Test
    void testFlatUrls() throws IOException {
        testInheritance("flat-urls");
    }

    }

    public void test_escapeXml_allSpecialChars() {
        // Test all special characters
        String input = "Test & < > \"quote\" 'apos'";
        String expected = "Test &amp; &lt; &gt; &quot;quote&quot; &apos;apos&apos;";
        assertEquals(expected, XmlUtil.escapeXml(input));
    }

    public void test_escapeXml_noSpecialChars() {
        // Test string without special characters

                if (value != null) {
                    // we're going to parse this back in as XML so we need to escape XML markup
                    value = value.toString()
                            .replace("&", "&")
                            .replace("<", "&lt;")
                            .replace(">", "&gt;");
                    return value;
                }
                return null;
            }
        });

        builder.addEscape(c, "\uFFFD");
      }
    }

    // Build the content escaper first and then add quote escaping for the
    // general escaper.
    builder.addEscape('&', "&");
    builder.addEscape('<', "&lt;");
    builder.addEscape('>', "&gt;");
    XML_CONTENT_ESCAPER = builder.build();
    builder.addEscape('\'', "&apos;");
    builder.addEscape('"', "&quot;");

     */
    protected String colonStr = "_CLN_";

    /**
     * A string to replace ;.
     */
    protected String semicolonStr = "_SCLN_";

    /**
     * A string to replace &.
     */
    protected String ampersandStr = "_AMP_";

    /** Maximum number of duplicated paths to attempt */
    protected int maxDuplicatedPath = 100;

    /** Character set name for encoding file paths */

        // Replace YouTube references by embedded videos, ?si= attribute is a must
        // E.g. @youtube(Summary,UN0AFCLASZA?si=9aG5tDzj6nL1_IKT&start=371)@ => https://www.youtube.com/embed/UN0AFCLASZA?si=9aG5tDzj6nL1_IKT&start=371"
        // "&rel=0" is also force-injected to prevent video recommendations from other channels
        rewritten = rewritten.replaceAll("\\@youtube\\(([a-zA-Z\\-_]+)\\,([^\\s<]+)\\)\\@",
            "<details> \n" +