path: root/lib/test_server/doc/src/notes.xml

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<!DOCTYPE chapter SYSTEM "chapter.dtd">

<chapter>
  <header>
    <copyright>
      <year>2004</year><year>2013</year>
      <holder>Ericsson AB. All Rights Reserved.</holder>
    </copyright>
    <legalnotice>
      Licensed under the Apache License, Version 2.0 (the "License");
      you may not use this file except in compliance with the License.
      You may obtain a copy of the License at
 
          http://www.apache.org/licenses/LICENSE-2.0

      Unless required by applicable law or agreed to in writing, software
      distributed under the License is distributed on an "AS IS" BASIS,
      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      See the License for the specific language governing permissions and
      limitations under the License.

    </legalnotice>

    <title>APPLICATION Release Notes</title>
    <prepared>Peter Andersson</prepared>
    <responsible>Peter Andersson</responsible>
    <docno></docno>
    <approved></approved>
    <checked></checked>
    <date>2007-11-30</date>
    <rev>A</rev>
    <file>notes.xml</file>
  </header>

<section><title>Test_Server 3.9</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    The status of an aborted test due to test suite
	    compilation error has changed from 'auto_skipped' to
	    'failed'. This affects both the textual log file, event
	    handling and CT hook callbacks. The logging of
	    compilation failures has also been improved, especially
	    in the case of multiple test suites failing compilation.</p>
          <p>
	    Own Id: OTP-10816</p>
        </item>
        <item>
          <p>
	    The Test Server source code parser (erl2html2) failed to
	    handle the macro tuple in the syntax tree returned by
	    epp_dodger. This error has been corrected.</p>
          <p>
	    Own Id: OTP-12740</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    The Test Server application has been marked as obsolete
	    and will be removed from OTP in the next major release
	    (OTP 19.0).</p>
          <p>
	    Own Id: OTP-10923 Aux Id: OTP-12705 </p>
        </item>
        <item>
          <p>
	    When running OTP tests using the ts interface, it is now
	    possible to specify so called test categories per OTP
	    application. A test category is represented by a CT test
	    specification and defines an arbitrary subset of existing
	    test suites, groups and cases. Examples of test
	    categories are 'smoke' (smoke tests) and 'bench'
	    (benchmarks). (Call ts:help() for more info). Also,
	    functions for reading terms from the current test
	    specification during test, ct:get_testspec_terms/0 and
	    ct:get_testspec_terms/1, have been implemented.</p>
          <p>
	    Own Id: OTP-11962</p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.8.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    If the last expression in a test case causes a timetrap
	    timeout, the stack trace is ignored and not printed to
	    the test case log file. This happens because the
	    {Suite,TestCase,Line} info is not available in the stack
	    trace in this scenario, due to tail call elimination.
	    Common Test has been modified to handle this situation by
	    inserting a {Suite,TestCase,last_expr} tuple in the
	    correct place and printing the stack trace as expected.</p>
          <p>
	    Own Id: OTP-12697 Aux Id: seq12848 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.8</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    When installing test suites in a cross compilation
	    environment, ts_install was not able to read the values
	    of the environment variables specified in the
	    configuration file. This has been fixed.</p>
          <p>
	    Own Id: OTP-11441</p>
        </item>
        <item>
          <p>
	    Printouts by means of ct:log/2/3 or ct:pal/2/3 from the
	    hook functions on_tc_fail/2 and on_tc_skip/2 would (quite
	    unexpectedly) end up in the "unexpected i/o" log file
	    instead of in the test case log file. This behaviour has
	    been changed so that now, all printouts (including stdio
	    printouts) from these hook functions will be routed to
	    the test case log file.</p>
          <p>
	    Own Id: OTP-12468</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    The format of the information printed on top of the test
	    case (and configuration function) log file has been
	    slightly modified, mainly in order to make the start
	    configuration data easier to read and interpret.</p>
          <p>
	    Own Id: OTP-12518 Aux Id: seq12808 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.7.2</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    The source code to html code generator in Test Server
	    (and Common Test) would fail to generate anchors in the
	    html code for functions with non-expandable macros,
	    resulting in bad html links to such functions. This
	    correction lets the code generator ignore macros that
	    can't be expanded (i.e. not pre-process them), so that
	    correct anchors will always be produced.</p>
          <p>
	    Own Id: OTP-11766 Aux Id: seq12556 </p>
        </item>
        <item>
          <p>
	    Make sure to install .hrl files when needed</p>
          <p>
	    Own Id: OTP-12197</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Distribute <c>autoconf</c> helpers to applications at
	    build time instead of having multiple identical copies
	    committed in the repository.</p>
          <p>
	    Own Id: OTP-12348</p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.7.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    The mechanism for running code cover analysis with
	    common_test has been improved. Earlier, if a test run
	    consisted of multiple tests, cover would be started and
	    stopped for each test. This would give "intermediate"
	    cover logs available from the "Coverage log" link on the
	    test suite result pages. To accumulate cover data over
	    all tests, the 'export' option had to be used in the
	    cover spec file. This was not well documented, and the
	    functionality was quite confusing.</p>
          <p>
	    Using the 'nodes' option in the cover spec file would
	    fail when the test run consisted of multiple tests, since
	    the specified nodes would only be included in the cover
	    analysis of the first test.</p>
          <p>
	    The repeated compilation and analysis of the same modules
	    was also very time consuming.</p>
          <p>
	    To overcome these problems, ct will now only cover
	    compile and analyze modules once per test run, i.e. once
	    for each cover spec file. The log file is available via a
	    new button on the top level index page. The old "Coverage
	    log" links on the test suite result pages still exist,
	    but they all point to the same log containing the
	    accumulated result.</p>
          <p>
	    Own Id: OTP-11971</p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.7</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Application upgrade (appup) files are corrected for the
	    following applications: </p>
          <p>
	    <c>asn1, common_test, compiler, crypto, debugger,
	    dialyzer, edoc, eldap, erl_docgen, et, eunit, gs, hipe,
	    inets, observer, odbc, os_mon, otp_mibs, parsetools,
	    percept, public_key, reltool, runtime_tools, ssh,
	    syntax_tools, test_server, tools, typer, webtool, wx,
	    xmerl</c></p>
          <p>
	    A new test utility for testing appup files is added to
	    test_server. This is now used by most applications in
	    OTP.</p>
          <p>
	    (Thanks to Tobias Schlager)</p>
          <p>
	    Own Id: OTP-11744</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Calls to erlang:open_port/2 with 'spawn' are updated to
	    handle space in the command path.</p>
          <p>
	    Own Id: OTP-10842</p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.6.4</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p>The way Common Test handles skipping of test cases has
	    been updated. In previous versions, returning
	    <c>{skip,Reason}</c> from a configuration function (such
	    as init_per_suite or init_per_group), resulted in all
	    affected test cases getting skipped with status
	    <c>auto_skipped</c>. This was inappropriate, since this
	    status is supposed to be used to inform that Common Test
	    has taken the initiative to skip something (e.g. a test
	    case group if init_per_group failed). Therefore, in this
	    version of Common Test, whenever the user skips a suite,
	    group, or individual test case (by means of a
	    configuration function or test specification term), the
	    affected test cases get the status <c>user_skipped</c>
	    instead.</p> <p>This update has meant a few changes that
	    may affect Common Test users in various ways:</p> <list>
	    <item>The test results and statistics will be affected,
	    which is important to know when running regression tests
	    and comparing results to previous test runs.</item>
	    <item>Users that read or parse the textual log file
	    <c>suite.log</c> will notice that an auto skipped
	    function is now reported as <c>auto_skipped</c> rather
	    than <c>skipped</c> as before.</item> <item>When
	    <c>require</c> fails in an info function (such as suite/0
	    or group/1), all affected configuration functions and
	    test cases are marked as <c>auto_skipped</c>.</item>
	    <item>If Common Test detects an error in the test suite
	    (such as e.g. an invalid all/0 function), all affected
	    configuration functions and test cases are marked as
	    <c>auto_skipped</c>.</item> <item>If a repeated test run
	    session reaches a deadline with <c>force_stop</c>
	    enabled, all remaining test cases are marked as
	    <c>auto_skipped</c> rather than <c>user_skipped</c> as
	    before.</item> <item>The event messages that Common Test
	    generates during test runs have been affected by this
	    update. For details see OTP-11524.</item> </list>
          <p>
	    Own Id: OTP-11305 Aux Id: OTP-11524 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.6.3</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Test Server installed an error handler (test_server_h)
	    only to be able to write the name of the current test
	    case to stdout whenever it received an error- or progress
	    report. This functionality was not useful and has been
	    removed. The built-in Common Test hook, cth_log_redirect,
	    has instead been improved to now also tag all error- and
	    progress reports in the log with suite-, group-, and/or
	    test case name.</p>
          <p>
	    Own Id: OTP-11263 Aux Id: seq12251 </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    A new log, the "Pre- and Post Test I/O Log", has been
	    introduced, which makes it possible to capture error- and
	    progress reports, as well as printouts made with ct:log/2
	    and ct:pal/2, before and after a test run. (Some minor
	    improvements of the logging system have been made at the
	    same time). Links to the new log are found on the Common
	    Test Framework Log page. The Common Test User's Guide has
	    been updated with information about the new log and also
	    with a new section on how to synchronize external
	    applications with Common Test by means of the CT Hook
	    init and terminate functions.</p>
          <p>
	    Own Id: OTP-11272</p>
        </item>
      </list>
    </section>


    <section><title>Known Bugs and Problems</title>
      <list>
        <item>
          <p>
	    Test Server: Report auto_skipped in major log.</p>
          <p>
	    Own Id: OTP-11297</p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.6.2</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Some unused code related to remote targets is removed,
	    and documentation is updated.</p>
          <p>
	    Own Id: OTP-10607 Aux Id: kunagi-338 [249] </p>
        </item>
        <item>
          <p>
	    A bug in test_server_gl caused io requests containing
	    invalid data (i.e. not unicode:chardata()) to hang, since
	    no io reply was sent. This has been corrected.</p>
          <p>
	    Own Id: OTP-10991</p>
        </item>
        <item>
          <p>
	    Common Test would, in case of timetrap error, print a
	    warning in the log if end_per_testcase wasn't implemented
	    in the suite, even though it's an optional function. This
	    printout has been removed.</p>
          <p>
	    Own Id: OTP-11052</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    The '-force_stop' flag to use with time-limited repeats
	    of test runs can now be used with a new 'skip_rest'
	    option which causes the rest of the test cases in the
	    ongoing test job to be skipped when the time limit is
	    reached. E.g. 'ct_run -spec xxx -duration 010000
	    -force_stop skip_rest'</p>
          <p>
	    Own Id: OTP-10856 Aux Id: OTP-10832 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.6.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    The unicode update of test_server for R16A introduced a
	    few potential errors when logging to files. Sometimes ~tp
	    or ~ts was used for formatting also when writing to files
	    that were not opened with the {encoding,utf8} option. If
	    then the argument contained unicode characters above 255,
	    the file descriptor would crash. This has been corrected
	    by the following modifications:</p> <list> <item> Since the
	    'unexpected_io' log file is used only when the test case
	    HTML file is not available (e.g. between test cases),
	    this file is now also a HTML file and as other
	    test_server HTML logs it is always UTF-8 encoded </item>
	    <item> Since it is possible to change which information
	    is going to which log file (with
	    test_server_ctrl:set_levels/3), we do not have full
	    control over which information is written to which file.
	    This means that any printout could be written to the
	    'major' log file (suite.log), which was earlier encoded
	    as latin1. To avoid crashing this file descriptor due to
	    unicode strings, the 'major' log file is now also encoded
	    in UTF-8 (possible incopatibility). </item> <item> The
	    cross_cover.info file is no longer a text file which can
	    be read with file:consult/1, instead it is written as a
	    pure binary file using term_to_binary when writing and
	    binary_to_term when reading. </item> <item> The encoding
	    of the file named 'last_name', which only content is the
	    path to the last run.&lt;timestamp&gt; directory, is now
	    dependent on the file name mode of the VM. If file names
	    are expected to be unicode, then the 'last_name' file is
	    UTF-8 encoded, else it is latin1 encoded. </item> </list>
          <p>
	    Also, ~tp has been changed back to ~p unless it is
	    somehow likely that the argument includes strings. It is
	    not obvious that this is the correct thing to do, but
	    some decission had to be taken...</p>
          <p>
	    Own Id: OTP-10780</p>
        </item>
        <item>
          <p>
	    Using the force_stop flag/option to interrupt a test run
	    caused a crash in Common Test. This problem has been
	    solved.</p>
          <p>
	    Own Id: OTP-10832</p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.6</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Line numbering of erlang files that were not correctly
	    indented could be wrong after coverting to html with
	    erl2html2:convert/[2,3] (the source code pointed to from
	    the test case). This has been corrected.</p>
          <p>
	    Also, there are now link targets for each line and not
	    only for each 10th line, and link targets for functions
	    now include the arity and not only the function name
	    (e.g. func/1 has a link target "func-1").</p>
          <p>
	    Own Id: OTP-9710 Aux Id: seq11945, kunagi-201 [112] </p>
        </item>
        <item>
          <p>
	    Severe errors detected by <c>test_server</c> (e.g. if log
	    files directories cannot be created) will now be reported
	    to <c>common_test</c> and noted in the <c>common_test</c>
	    logs.</p>
          <p>
	    Own Id: OTP-9769 Aux Id: kunagi-202 [113] </p>
        </item>
        <item>
          <p>
	    The earlier undocumented cross cover feature for
	    accumulating cover data over multiple tests has now been
	    fixed and documented.</p>
          <p>
	    Own Id: OTP-9870 Aux Id: kunagi-206 [117] </p>
        </item>
        <item>
          <p>
	    If the test suite itself was included in code coverage
	    analysis, then the test_server would not manage to set
	    data_dir correctly for the test. This has been corrected.</p>
          <p>
	    Own Id: OTP-9956 Aux Id: kunagi-207 [118] </p>
        </item>
        <item>
          <p>
	    Any call to test_server:break/1 should cancel all active
	    timetramps. However, in some cases
	    Suite:end_per_testcase/2 is executed on a different
	    process than the test case itself, and if
	    test_server:break/1 was called from there, the timetraps
	    were not cancelled. This has been corrected.</p>
          <p>
	    Own Id: OTP-10046 Aux Id: kunagi-174 [85] </p>
        </item>
        <item>
	    <p>When a test case failed because of a timetrap time
	    out, the <c>Config</c> data for the case was lost in the
	    following call to <c>end_per_testcase/2</c>, and also in
	    calls to the CT Hook function
	    <c>post_end_per_testcase/4</c>. This problem has been
	    solved and the <c>Config</c> data is now correctly passed
	    to the above functions after a timetrap timeout
	    failure.</p>
          <p>
	    Own Id: OTP-10070 Aux Id: kunagi-175 [86] </p>
        </item>
        <item>
	    <p>In test_server, the same process would supervise the
	    currently running test case and be group leader (and IO
	    server) for the test case. Furthermore, when running
	    parallel test cases, new temporary supervisor/group
	    leader processes were spawned and the process that was
	    group leader for sequential test cases would not be
	    active. That would lead to several problems:</p>
	    <p>* Processes started by init_per_suite will inherit the
	    group leader of the init_per_suite process (and that
	    group leader would not process IO requests when parallel
	    test cases was running). If later a parallel test case
	    caused such a processto print using (for example)
	    io:format/2, the calling would hang.</p>
	    <p>* Similarly, if a process was spawned from a parallel
	    test case, it would inherit the temporary group leader
	    for that parallel test case. If that spawned process
	    later - when the group of parallel tests have finished -
	    attempted to print something, its group leader would be
	    dead and there would be <c>badarg</c> exception.</p>
	    <p>Those problems have been solved by having group
	    leaders separate from the processes that supervises the
	    test cases, and keeping temporary group leader process
	    for parallel test cases alive until no more process in
	    the system use them as group leaders.</p>
	    <p>Also, a new <c>unexpected_io.log</c> log file
	    (reachable from the summary page of each test suite) has
	    been introduced. All unexpected IO will be printed into
	    it(for example, IO to a group leader for a parallel test
	    case that has finished).</p>
          <p>
	    Own Id: OTP-10101 Aux Id: OTP-10125 </p>
        </item>
        <item>
          <p>
	    The stability of <c>common_test</c> and
	    <c>test_server</c> when running test cases in parallel
	    has been improved.</p>
          <p>
	    Own Id: OTP-10480 Aux Id: kunagi-318 [229] </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Added a general framework for executing benchmarks of
	    Erlang/OTP. Benchmarks for the Erlang VM and mnesia have
	    been incorporated in the framework. </p>
          <p>
	    For details about how to add more benchmarks see
	    $ERL_TOP/HOWTO/BENCHMARKS.md in the source distribution.</p>
          <p>
	    Own Id: OTP-10156</p>
        </item>
        <item>
          <p>
	    Update common test modules to handle Unicode:</p> <list>
	    <item> Use UTF-8 encoding for all HTML files, except the
	    HTML version of the test suite generated with
	    erl2html2:convert, which will have the same encoding as
	    the original test suite (.erl) file. </item> <item>
	    Encode link targets in HTML files with
	    test_server_ctrl:uri_encode/1. </item> <item> Use unicode
	    modifier 't' with ~s when appropriate. </item> <item> Use
	    unicode:characters_to_list and
	    unicode:characters_to_binary for conversion between
	    binaries and strings instead of binary_to_list and
	    list_to_binary. </item> </list>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.5.3</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    test_server_h will now recognize info_reports written by
	    ct connection handlers (according to the description in
	    cth_conn_log) and ignore them as they will be completely
	    handled by by ct_conn_log_h.</p>
          <p>
	    Earlier test_server_h would print a tag (testcase name)
	    before forwarding the report to error_logger_tty_h. This
	    would cause lots of tags in the log with no info report
	    following (since error_logger_tty_h did not handle them).</p>
          <p>
	    Own Id: OTP-10571</p>
        </item>
      </list>
    </section>


    <section><title>Known Bugs and Problems</title>
      <list>
        <item>
          <p>
	    Restore Config data if lost when test case fails.</p>
          <p>
	    Own Id: OTP-10070 Aux Id: kunagi-175 [86] </p>
        </item>
        <item>
          <p>
	    IO server error in test_server.</p>
          <p>
	    Own Id: OTP-10125 Aux Id: OTP-10101, kunagi-177 [88] </p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.5.2</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    The documentation has been updated with the latest
	    changes for the test_server_ctrl:report/2 function.</p>
          <p>
	    Own Id: OTP-10086 Aux Id: seq12066 </p>
        </item>
        <item>
          <p>
	    The ct:get_status/0 function failed to report status if a
	    parallel test case group was running at the time of the
	    call. This has been fixed and the return value for the
	    function has been updated. Please see the ct reference
	    manual for details.</p>
          <p>
	    Own Id: OTP-10172</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    It is now possible to sort the HTML tables by clicking on
	    the header elements. In order to reset a sorted table,
	    the browser window should simply be refreshed. This
	    feature requires that the browser supports javascript,
	    and has javascript execution enabled. If the 'ct_run
	    -basic_html' flag is used, no javascript code is included
	    in the generated HTML code.</p>
          <p>
	    Own Id: OTP-9896 Aux Id: seq12034, OTP-9835 </p>
        </item>
        <item>
          <p>
	    Verbosity levels for log printouts has been added. This
	    makes it possible to specify preferred verbosity for
	    different categories of log printouts, as well as general
	    printouts (such as standard IO), to allow control over
	    which strings get printed and which get ignored. New
	    versions of the Common Test logging functions, ct:log,
	    ct:pal and ct:print, have been introduced, with a new
	    Importance argument added. The Importance value is
	    compared to the verbosity level at runtime. More
	    information can be found in the chapter about Logging in
	    the Common Test User's Guide.</p>
          <p>
	    Own Id: OTP-10067 Aux Id: seq12050 </p>
        </item>
        <item>
          <p>
	    The Erlang/OTP test runner ts has been extended to allow
	    cross compilation of test suites. To cross compile the
	    test suites first follow the normal cross compilation
	    procedures and release the tests on the build host. Then
	    install ts using an xcomp specification file and compile
	    test suites using ts:compile_testcases/0. For more
	    details see $ERL_TOP/xcomp/README.md.</p>
          <p>
	    Own Id: OTP-10074</p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.5.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    After a test case timeout or abortion, the
	    end_per_testcase function executes on a new dedicated
	    process. The group leader for this process should be set
	    to the IO server for the test case, which was not done
	    properly. The result of this error was that no warnings
	    about end_per_testcase failing or timing out were ever
	    printed in the test case log. Also, help functions such
	    as e.g. test_server:stop_node/1, attempting to
	    synchronize with the IO server, would hang. The fault has
	    been corrected.</p>
          <p>
	    Own Id: OTP-9666</p>
        </item>
        <item>
          <p>
	    A deadlock situation could occur if Common Test is
	    forwarding error_handler printouts to Test Server at the
	    same time a new test case is starting. This error has
	    been fixed.</p>
          <p>
	    Own Id: OTP-9894</p>
        </item>
        <item>
          <p>
	    When a test case was killed because of a timetrap
	    timeout, the current location (suite, case and line) was
	    not printed correctly in the log files. This has been
	    corrected.</p>
          <p>
	    Own Id: OTP-9930 Aux Id: seq12002 </p>
        </item>
        <item>
          <p>
	    Test Server and Common Test would add new error handlers
	    with each test run and fail to remove previously added
	    ones. In the case of Test Server, this would only happen
	    if SASL was not running on the test node. This has been
	    fixed.</p>
          <p>
	    Own Id: OTP-9941 Aux Id: seq12009 </p>
        </item>
        <item>
          <p>
	    If a test case process was terminated due to an exit
	    signal from a linked process, Test Server failed to
	    report the correct name of the suite and case to the
	    framework. This has been corrected.</p>
          <p>
	    Own Id: OTP-9958 Aux Id: OTP-9855 </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    A new optional feature has been introduced that enables
	    Common Test to generate priv_dir directory names that are
	    unique for each test case or config function. The name of
	    the option/flag is 'create_priv_dir' and it can be set to
	    value 'auto_per_run' (which is the default, existing,
	    behaviour), or 'auto_per_tc' or 'manual_per_tc'. If
	    'auto_per_tc' is used, Test Server creates a dedicated
	    priv_dir automatically for each test case (which can be
	    very expensive in case of many and/or repeated cases). If
	    'manual_per_tc' is used, the user needs to create the
	    priv_dir explicitly by calling the new function
	    ct:make_priv_dir/0.</p>
          <p>
	    Own Id: OTP-9659 Aux Id: seq11930 </p>
        </item>
        <item>
          <p>
	    A column for test case group name has been added to the
	    suite overview HTML log file.</p>
          <p>
	    Own Id: OTP-9730 Aux Id: seq11952 </p>
        </item>
        <item>
          <p>
	    It is now possible to use the post_end_per_testcase CT
	    hook function to print a comment for a test case in the
	    overview log file, even if the test case gets killed by a
	    timetrap or unknown exit signal, or if the
	    end_per_testcase function times out.</p>
          <p>
	    Own Id: OTP-9855 Aux Id: seq11979 </p>
        </item>
        <item>
          <p>
	    Common Test will now print error information (with a time
	    stamp) in the test case log file immediately when a test
	    case fails. This makes it easier to see when, in time,
	    the fault actually occured, and aid the job of locating
	    relevant trace and debug printouts in the log.</p>
          <p>
	    Own Id: OTP-9904 Aux Id: seq11985, OTP-9900 </p>
        </item>
        <item>
          <p>
	    Test Server has been modified to check the SASL
	    errlog_type parameter when receiving an error logger
	    event, so that it doesn't print reports of type that the
	    user has disabled.</p>
          <p>
	    Own Id: OTP-9955 Aux Id: seq12013 </p>
        </item>
        <item>
          <p>
	    If an application cannot be found by ts it is
	    automatically skipped when testing.</p>
          <p>
	    Own Id: OTP-9971</p>
        </item>
        <item>
          <p>
	    By specifying a user defined function ({M,F,A} or fun) as
	    timetrap value, either by means of an info function or by
	    calling ct:timetrap/1, it is now possible to set a
	    timetrap that will be triggered when the user function
	    returns.</p>
          <p>
	    Own Id: OTP-9988 Aux Id: OTP-9501, seq11894 </p>
        </item>
        <item>
          <p>
	    If the optional configuration functions init_per_suite/1
	    and end_per_suite/1 are not implemented in the test
	    suite, local Common Test versions of these functions are
	    called instead, and will be displayed in the overview log
	    file. Any printouts made by the pre- or
	    post_init_per_suite and pre- or post_end_per_suite hook
	    functions are saved in the log files for these functions.</p>
          <p>
	    Own Id: OTP-9992</p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.5</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    The test case group info function has been implemented in
	    Common Test. Before execution of a test case group, a
	    call is now made to <c>TestSuite:group(GroupName)</c>.
	    The function returns a list of test properties, e.g. to
	    specify timetrap values, require configuration data, etc
	    (analogue to the test suite- and test case info
	    function). The scope of the properties set by
	    <c>group(GroupName)</c> is all test cases and sub-groups
	    of group <c>GroupName</c>.</p>
          <p>
	    Own Id: OTP-9235</p>
        </item>
        <item>
          <p>
	    The look of the HTML log files generated by Common Test
	    and Test Server has been improved (and made easier to
	    customize) by means of a CSS file.</p>
          <p>
	    Own Id: OTP-9706</p>
        </item>
      </list>
    </section>


    <section><title>Known Bugs and Problems</title>
      <list>
        <item>
          <p>
	    Fix problems in CT/TS due to line numbers in exceptions.</p>
          <p>
	    Own Id: OTP-9203</p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.4.5</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    An error in how comments are colored in the test suite
	    overview html log file has been corrected. As result, a
	    new framework callback function, format_comment/1, has
	    been introduced.</p>
          <p>
	    Own Id: OTP-9237</p>
        </item>
        <item>
          <p>
	    Test Server did not release SASL TTY handlers
	    (sasl_report_tty_h and error_logger_tty_h) properly after
	    each test run. This error has been fixed.</p>
          <p>
	    Own Id: OTP-9311</p>
        </item>
        <item>
          <p>
	    Automatically generated init- and end-configuration
	    functions for test case groups caused incorrect execution
	    order of test cases. This has been corrected.</p>
          <p>
	    Own Id: OTP-9369</p>
        </item>
        <item>
          <p>
	    If ct:log/2 was called with bad arguments, this could
	    cause the Common Test IO handling process to crash. This
	    fault has been corrected.</p>
          <p>
	    Own Id: OTP-9371 Aux Id: OTP-8933 </p>
        </item>
        <item>
          <p>
	    A bug has been fixed that made Test Server call the
	    end_tc/3 framework function with an incorrect module name
	    as first argument.</p>
          <p>
	    Own Id: OTP-9379 Aux Id: seq11863 </p>
        </item>
        <item>
          <p>
	    If end_per_testcase caused a timetrap timeout, the actual
	    test case status was discarded and the test case logged
	    as successful (even if the case had actually failed
	    before the call to end_per_testcase). This fault has been
	    fixed.</p>
          <p>
	    Own Id: OTP-9397</p>
        </item>
        <item>
          <p>
	    If a timetrap timeout occured during execution of of a
	    function in a lib module (i.e. a function called directly
	    or indirectly from a test case), the Suite argument in
	    the end_tc/3 framework callback function would not
	    correctly contain the name of the test suite, but the lib
	    module. (This would only happen if the lib module was
	    compiled with ct.hrl included). This error has been
	    solved.</p>
          <p>
	    Own Id: OTP-9398</p>
        </item>
        <item>
          <p>
	    Add a proplist() type</p>
          <p>
	    Recently I was adding specs to an API and found that
	    there is no canonical proplist() type defined. (Thanks to
	    Ryan Zezeski)</p>
          <p>
	    Own Id: OTP-9499</p>
        </item>
        <item>
	    <p> XML files have been corrected. </p>
          <p>
	    Own Id: OTP-9550 Aux Id: OTP-9541 </p>
        </item>
        <item>
          <p>
	    If a test suite would start with a test case group
	    defined without the init_per_group/2 and end_per_group/2
	    function, init_per_suite/1 would not execute initially
	    and logging of the test run would fail. This error has
	    been fixed.</p>
          <p>
	    Own Id: OTP-9584</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    A new option, 'logopts', has been introduced, to make it
	    possible to modify some aspects of the logging behaviour
	    in Common Test (or Test Server). For example, whenever an
	    io printout is made, test_server adds newline (\n) to the
	    end of the output string. This may not always be a
	    preferred action and can therefore be disabled by means
	    of "ct_run ... -logopts no_nl" (or ct:run_test([...,
	    {logopts,[no_nl]}])). A new framework callback function,
	    get_logopts/0, has been introduced (see the ct_framework
	    module for details).</p>
          <p>
	    Own Id: OTP-9372 Aux Id: OTP-9396 </p>
        </item>
        <item>
          <p>
	    A new option, 'logopts', has been introduced, to make it
	    possible to modify some aspects of the logging behaviour
	    in Common Test (or Test Server). For example, if the html
	    version of the test suite source code should not be
	    generated during the test run (and consequently be
	    unavailable in the log file system), the feature may be
	    disabled by means of "ct_run ... -logopts no_src" (or
	    ct:run_test([..., {logopts,[no_src]}])). A new framework
	    callback function, get_logopts/0, has been introduced
	    (see the ct_framework module for details).</p>
          <p>
	    Own Id: OTP-9396 Aux Id: seq11869, OTP-9372 </p>
        </item>
        <item>
          <p>
	    It is now possible to use a tuple {M,F,A}, or a fun, as
	    timetrap specification in the suite info function or test
	    case info functions. The function must return a valid
	    timeout value, as documented in the common_test man page
	    and in the User's Guide.</p>
          <p>
	    Own Id: OTP-9501 Aux Id: seq11894 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.4.4</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    It was previously not possible to use timetrap value
	    'infinity' with ct:timetrap/1. This has been fixed.</p>
          <p>
	    Own Id: OTP-9159</p>
        </item>
        <item>
          <p>
	    A bug that made it impossible to cancel the previous
	    timetrap when calling ct:timetrap/1 has been corrected.</p>
          <p>
	    Own Id: OTP-9233 Aux Id: OTP-9159 </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    When running tests with auto-compilation disabled, Common
	    Test could only display the test suite source code on
	    html format in the test case log if the source file was
	    located in the same directory as the pre-compiled suite.
	    This has been modified so that Common Test now tries to
	    locate the source file by means of the test suite module
	    info (Suite:module_info/1). As a result, a suite may now
	    be compiled to a different output directory (e.g.
	    $MYTEST/bin) than the source code directory (e.g.
	    $MYTEST/src), without the source-code-to-html generation
	    being affected.</p>
          <p>
	    Own Id: OTP-9138</p>
        </item>
        <item>
          <p>
	    It is now possible to return a tuple {fail,Reason} from
	    init_per_testcase/2. The result is that the associated
	    test case gets logged as failed without ever executing.</p>
          <p>
	    Own Id: OTP-9160 Aux Id: seq11502 </p>
        </item>
        <item>
          <p>
	    Added DragonflyBSD check in test_server configure.</p>
          <p>
	    Own Id: OTP-9249</p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.4.3</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Updated the ts*.config files to contain information
	    relevant to testing Erlang/OTP in an open source
	    environment.</p>
          <p>
	    Own Id: OTP-9017</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Alpha release of Common Test Hooks (CTH). CTHs allow the
	    users of common test to abtract out common behaviours
	    from test suites in a much more elegant and flexible way
	    than was possible before. Note that the addition of this
	    feature may introduce minor changes in the undocumented
	    behaviour of the interface inbetween common_test and
	    test_server.</p>
          <p>
	    *** POTENTIAL INCOMPATIBILITY ***</p>
          <p>
	    Own Id: OTP-8851</p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.4.2</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
	    <p>Miscellaneous updates</p>
          <p>
	    Own Id: OTP-8976</p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.4.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Returning {return_group_result,failed} from end_per_group
	    in a group that is part of a sequence, did not cause the
	    proceeding cases (or groups) to get skipped. This has
	    been fixed.</p>
          <p>
	    Own Id: OTP-8753 Aux Id: seq11644 </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Common Test has been updated to handle start options and
	    test specification terms for test case groups (and test
	    cases in groups). Also, an option named 'label', has been
	    added that associates the test run with a name that
	    Common Test prints in the overview HTML logs.</p>
          <p>
	    Own Id: OTP-8725 Aux Id: OTP-8727 </p>
        </item>
        <item>
          <p>
	    It is now possible to skip all tests in a suite, or a
	    group, by returning {fail,Reason} from the end_tc/5
	    framework function for init_per_suite, or init_per_group.</p>
          <p>
	    Own Id: OTP-8805 Aux Id: seq11664 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.4</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Returning {fail,Reason} from the framework end_tc
	    function was not handled properly by Test Server for all
	    test suite functions.</p>
          <p>
	    Own Id: OTP-8492 Aux Id: seq11502 </p>
        </item>
        <item>
          <p>
	    If the framework end_tc function would hang and get
	    aborted by Test Server, there was no indication of
	    failure in the logs. This has been fixed.</p>
          <p>
	    Own Id: OTP-8682 Aux Id: seq11504 </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    It is now possible for the Test Server framework end_tc
	    function to change the status of the test case from ok or
	    auto-skipped to failed by returning {fail,Reason}.</p>
          <p>
	    Own Id: OTP-8495 Aux Id: seq11502 </p>
        </item>
        <item>
          <p>
	    Test Server will now call the end_per_testcase/2 function
	    even if the test case has been terminated explicitly
	    (with abort_current_testcase/1), or after a timetrap
	    timeout. Under these circumstances the return value of
	    end_per_testcase is completely ignored. Therefore the
	    function will not be able to change the reason for test
	    case termination by returning {fail,Reason}, nor will it
	    be able to save data with {save_config,Data}.</p>
          <p>
	    Own Id: OTP-8500 Aux Id: seq11521 </p>
        </item>
        <item>
          <p>
	    Previously, a repeat property of a test case group
	    specified the number of times the group should be
	    repeated after the main test run. I.e. {repeat,N} would
	    case the group to execute 1+N times. To be consistent
	    with the behaviour of the run_test repeat option, this
	    has been changed. N now specifies the absolute number of
	    executions instead.</p>
          <p>
	    Own Id: OTP-8689 Aux Id: seq11502 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.3.6</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    The Test Server parse transform did not handle bit string
	    comprehensions. This has been fixed.</p>
          <p>
	    Own Id: OTP-8458 Aux Id: OTP-8311 </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    The tc_status value in the Config list for a test case
	    that has failed because of a timetrap timeout, has
	    changed from {tc_status,timeout} to
	    {tc_status,timetrap_timeout}.</p>
          <p>
	    Own Id: OTP-8302</p>
        </item>
        <item>
	    <p>The documentation is now possible to build in an open
	    source environment after a number of bugs are fixed and
	    some features are added in the documentation build
	    process. </p>
	    <p>- The arity calculation is updated.</p>
	    <p>- The module prefix used in the function names for
	    bif's are removed in the generated links so the links
	    will look like
	    "http://www.erlang.org/doc/man/erlang.html#append_element-2"
	    instead of
	    "http://www.erlang.org/doc/man/erlang.html#erlang:append_element-2".</p>
	    <p>- Enhanced the menu positioning in the html
	    documentation when a new page is loaded.</p>
	    <p>- A number of corrections in the generation of man
	    pages (thanks to Sergei Golovan)</p>
	    <p>- The legal notice is taken from the xml book file so
	    OTP's build process can be used for non OTP
	    applications.</p>
          <p>
	    Own Id: OTP-8343</p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.3.5</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    If the init_per_testcase/2 function fails, the test case
	    now gets marked and counted as auto skipped, not user
	    skipped (which would previously happen).</p>
          <p>
	    Own Id: OTP-8289</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    The documentation is now built with open source tools
	    (xsltproc and fop) that exists on most platforms. One
	    visible change is that the frames are removed.</p>
          <p>
	    Own Id: OTP-8201</p>
        </item>
        <item>
          <p>
	    It is now possible to fail a test case from the
	    end_per_testcase/2 function, by returning {fail,Reason}.</p>
          <p>
	    Own Id: OTP-8284</p>
        </item>
        <item>
          <p>
	    It is now possible to fail a test case by having the
	    end_tc/3 framework function return {fail,Reason} for the
	    test case.</p>
          <p>
	    Own Id: OTP-8285</p>
        </item>
        <item>
          <p>
	    The test_server framework API (e.g. the end_tc/3
	    function) has been modified. See the test_server_ctrl
	    documentation for details.</p>
          <p>
	    Own Id: OTP-8286 Aux Id: OTP-8285, OTP-8287 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.3.4</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    When running a suite starting with a test case group,
	    Test Server crashed if init_per_suite/1 exited or
	    returned skip. This has been fixed.</p>
          <p>
	    Own Id: OTP-8105 Aux Id: OTP-8089 </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Various updates and fixes in Common Test and Test Server.</p>
          <p>
	    Own Id: OTP-8045 Aux Id: OTP-8089,OTP-8105,OTP-8163 </p>
        </item>
        <item>
          <p>
	    Errors in coverage data collection and analysis were
	    difficult to detect. The logging has been improved so
	    that more information about e.g. imported and missing
	    modules is printed to the html log files.</p>
          <p>
	    Own Id: OTP-8163 Aux Id: seq11374 </p>
        </item>
        <item>
          <p>
	    The Common Test HTML overview pages have been improved.
	    It is now possible to see if a test case has been skipped
	    explicitly or because a configuration function has
	    failed. Also, the history page (all_runs.html) now has
	    scrolling text displaying the test names. The old format
	    (showing names as a truncated string) can still be
	    generated by means of the flag/option 'basic_html'.</p>
          <p>
	    Own Id: OTP-8177</p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.3.2</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Various corrections and improvements of Common Test and
	    Test Server.</p>
          <p>
	    Own Id: OTP-7981</p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.3.1</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Minor updates and corrections.</p>
          <p>
	    Own Id: OTP-7897</p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.3</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    The conf case in Test Server has been extended with
	    properties that make it possible to execute test cases in
	    parallel, in sequence and in shuffled order. It is now
	    also possible to repeat test cases according to different
	    criterias. The properties can be combined, making it
	    possible to e.g. repeat a conf case a certain number of
	    times and execute the test cases in different (random)
	    order every time. The properties are specified in a list
	    in the conf case definition: {conf, Properties, InitCase,
	    TestCases, EndCase}. The available properties are:
	    parallel, sequence, shuffle, repeat, repeat_until_all_ok,
	    repeat_until_any_ok, repeat_until_any_fail,
	    repeat_until_all_fail.</p>
          <p>
	    Own Id: OTP-7511 Aux Id: OTP-7839 </p>
        </item>
        <item>
	    <p>The test server starts Cover on nodes of the same
	    version as the test server itself only.</p>
          <p>
	    Own Id: OTP-7699</p>
        </item>
        <item>
          <p>
	    The Erlang mode for Emacs has been updated with new and
	    modified skeletons for Common Test and TS. Syntax for
	    test case groups in Common Test (and conf cases with
	    properties in TS) has been added and a new minimal Common
	    Test suite skeleton has been introduced.</p>
          <p>
	    Own Id: OTP-7856</p>
        </item>
      </list>
    </section>

</section>
<section><title>Test_Server 3.2.4.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
            The step functionality in Common Test (based on
            interaction with Debugger) was broken. This has been
            fixed, and some new step features have also been added.
            Please see the Common Test User's Guide for details.</p>
          <p>
            Own Id: OTP-7800 Aux Id: seq11106 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.2.4</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Miscellaneous updates.</p>
          <p>
	    Own Id: OTP-7527</p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.2.3</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    When a testcase terminated due to a timetrap, io sent to
	    the group leader from framework:end_tc/3 (using
	    ct:pal/2/3 or ct:log/2/3) would cause deadlock. This has
	    been fixed.</p>
          <p>
	    Own Id: OTP-7447 Aux Id: seq11010 </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Various updates and improvements, plus some minor bug
	    fixes, have been implemented in Common Test and Test
	    Server.</p>
          <p>
	    Own Id: OTP-7112</p>
        </item>
        <item>
          <p>
	    It is now possible, by means of the new function
	    ct:abort_current_testcase/1 or
	    test_server_ctrl:abort_current_testcase/1, to abort the
	    currently executing test case.</p>
          <p>
	    Own Id: OTP-7518 Aux Id: OTP-7112 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.2.2</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
	    <p><c>erlang:system_info/1</c> now accepts the
	    <c>logical_processors</c>, and <c>debug_compiled</c>
	    arguments. For more info see the, <c>erlang(3)</c>
	    documentation.</p> <p>The scale factor returned by
	    <c>test_server:timetrap_scale_factor/0</c> is now also
	    effected if the emulator uses a larger amount of
	    scheduler threads than the amount of logical processors
	    on the system. </p>
          <p>
	    Own Id: OTP-7175</p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.2.1</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    When init_per_suite or end_per_suite terminated due to
	    runtime failure, test_server failed to format the line
	    number information properly and crashed. This error has
	    now been fixed.</p>
          <p>
	    Own Id: OTP-7091</p>
        </item>
      </list>
    </section>

</section>

<section><title>Test_Server 3.2.0</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Test Server is a portable test server for automated
	    application testing. The server can run test suites on
	    local or remote targets and log progress and results to
	    HTML pages. The main purpose of Test Server is to act as
	    engine inside customized test tools. A callback interface
	    for such framework applications is provided.</p>
          <p>
	    Own Id: OTP-6989</p>
        </item>
      </list>
    </section>

</section>

</chapter>