Most of the tests actually run against the example source files in the documentation.

This helps to make sure that:

* The documentation is up-to-date.
* The documentation examples can be run as is.
* Most of the features are covered by the documentation, ensured by test coverage.

#### Apps and docs at the same time

If you run the examples with, e.g.:

<div class="termy">

```console
$ fastapi dev tutorial001.py

    protected String cookieDomain;

    /** The maximum age of the user identification cookie in seconds (default: 1 month) */
    protected int cookieMaxAge = 30 * 24 * 60 * 60;// 1 month

    /** The path for the user identification cookie */
    protected String cookiePath = "/";

    /** Whether the user identification cookie should be secure (HTTPS only) */
    protected Boolean cookieSecure;

        };
    }

    /**
     * Encodes a String as UTF-8 bytes.
     *
     * @param str the String to encode
     * @param dst the destination byte array
     * @param di the starting index in the destination array
     * @param dlim the maximum index in the destination array
     * @return the number of bytes written
     */
    public static int enc_utf8(final String str, final byte[] dst, int di, final int dlim) {

    /** The sort order of the label type. */
    public String sortOrder;

    /** The creator of the label type. */
    public String createdBy;

    /** The created time of the label type. */
    public String createdTime;

    /** The version number of the label type. */
    public String versionNo;

    /**
     * Clears the pager fields.
     */
    public void clear() {
        allRecordCount = 0;

    }

    /**
     * Interface for the filter chain that processes queries.
     * Each filter in the chain can invoke the next filter or terminate the chain.
     */
    public interface FilterChain {
        /**
         * Parses the query string and returns a Query object.
         *
         * @param query the query string to parse
         * @return the parsed Query object
         */

   * @param comparator the comparator by which the list is ordered.
   * @param presentBehavior the specification for what to do if at least one element of the list
   *     compares as equal to the key.
   * @param absentBehavior the specification for what to do if no elements of the list compare as
   *     equal to the key.
   * @return the index determined by the {@code KeyPresentBehavior}, if the key is in the list;

    }

    /**
     * Reads up to len bytes of data from the input stream into an array of bytes.
     *
     * @param b the buffer into which the data is read
     * @param off the start offset in array b at which the data is written
     * @param len the maximum number of bytes to read
     * @return the total number of bytes read into the buffer, or -1 if there is no more data
     * @throws IOException if an I/O error occurs

   APPENDIX: How to apply the Apache License to your work.

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   APPENDIX: How to apply the Apache License to your work.

      To apply the Apache License to your work, attach the following
      boilerplate notice, with the fields enclosed by brackets "{}"
      replaced with your own identifying information. (Don't include
      the brackets!)  The text should be enclosed in the appropriate
      comment syntax for the file format. We also recommend that a

   APPENDIX: How to apply the Apache License to your work.

      To apply the Apache License to your work, attach the following
      boilerplate notice, with the fields enclosed by brackets "{}"
      replaced with your own identifying information. (Don't include
      the brackets!)  The text should be enclosed in the appropriate
      comment syntax for the file format. We also recommend that a