Difference between revisions of "CMake/Testing With CTest"

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==Introduction==
{{CMake/Template/Moved}}


CTest is a testing tool distributed as a part of CMake. It can be used to
This page has moved [https://gitlab.kitware.com/cmake/community/wikis/doc/ctest/Testing-With-CTest here].
automate updating (using CVS for example), configuring, building, testing,
performing memory checking, performing coverage, and submitting results to
[http://public.kitware.com/Dart Dart] dashboard system. This tutorial will
introduce the testing with CTest.
 
==Simple Testing==
 
The easiest way to create CTest input files is using CMake. It has support for
adding tests in the project. To do that, insert the following command in the
CMakeLists.txt file:
 
ENABLE_TESTING()
 
From that point on, you can add tests in the project using ADD_TEST command:
 
ADD_TEST(SimpleTest ${EXECUTABLE_OUTPUT_PATH}/SimpleTest Hello)
 
After building the project, you should be able to run CTest on the project.
 
1. When using Makefile generators, such as Unix Makefiles, Borland Makefiles,
or NMake Makefiles, the CTest can simply be run by running:
 
make test
 
2. On GUI development environments such as Visual Studio rebuilding the target
RUN_TESTS will run tests on the project.
 
For more information about ENABLE_TESTING and ADD_TEST, Look at
[http://www.cmake.org/HTML/Documentation.html CMake Documentation] or run:
 
cmake --help
cmake --help-full
cmake --help-command-list
 
or
 
cmake --help-command ENABLE_TESTING
cmake --help-command ADD_TEST
 
Internally "make test" or "RUN_TESTS" runs CTest. CTest is a program that actually performs the testing.
The default behavior of CTest is to read "DartTestfile.txt" and runs tests that are in the file.
 
==Dashboards==
 
Testing Dashboards are web pages that display overview of the project testing.
The testing clients update, configure, and build the project, as well as run
some number of tests. The results of these operations are then submitted to the
central server, which prepares the overview pages. Examples of Testing
Dashboards are:
[http://www.vtk.org/Testing/Dashboard/MostRecentResults-Nightly/Dashboard.html
VTK],
[http://www.itk.org/Testing/Dashboard/MostRecentResults-Nightly/Dashboard.html
ITK], and
[http://www.paraview.org/Testing/Dashboard/MostRecentResults-Nightly/Dashboard.html
ParaView].
 
There are three types of dashboard submissions. Experimental submission is
submission of the current state of the project. It can be performed at any time
and will appear on the dashboard on the next roll-up. Nightly submission is
similar to experimental, except that the extra update will be performed using
the last nighty time. This way all nightly dashboard submissions correspond to
the state of the project at the same point in time. Finally Continuous
submissions are similar to Experimental submissions, except that an update is
performed and if any files were modified, the full dashboard testing is
performed.
 
===Dashboard Preparation Using CMake===
 
To enable submission to Dart Testing Dashboard, include the following in
CMakeLists.txt:
 
INCLUDE(Dart)
 
By default the settings will be to submit to [http://www.kitware.com Kitware's]
[http://public.kitware.com/Public/Dashboard/MostRecentResults-Nightly/Dashboard.html
Public Dashboard]. In order to submit
to some other dashboard, create file "DartConfig.cmake" in the toplevel source directory and set the dashboard preferences.
 
Example of this file is:
 
<pre>
# Dashboard is opened for submissions for a 24 hour period starting at
# the specified NIGHLY_START_TIME. Time is specified in 24 hour format.
SET (NIGHTLY_START_TIME "23:00:00 EDT")
 
# Dart server to submit results (used by client)
IF(DROP_METHOD MATCHES http)
  SET (DROP_SITE "public.kitware.com")
  SET (DROP_LOCATION "/cgi-bin/HTTPUploadDartFile.cgi")
ELSE(DROP_METHOD MATCHES http)
  SET (DROP_SITE "public.kitware.com")
  SET (DROP_LOCATION "/incoming")
  SET (DROP_SITE_USER "ftpuser")
  SET (DROP_SITE_PASSWORD "public")
ENDIF(DROP_METHOD MATCHES http)
 
SET (TRIGGER_SITE
      "http://${DROP_SITE}/cgi-bin/Submit-vtk-TestingResults.pl")
</pre>
 
This will submit testing results to the
[http://www.vtk.org/Testing/Dashboard/MostRecentResults-Nightly/Dashboard.html
VTK dashboard].
 
===CTest - Client for Dart Dashboard Server===
 
CTest started as a simple tool to run some number of tests in the project, but
has evolved in the full ''Dart'' compatible client. It can perform simple task
of running a set of tests but it can also generate and submit Dart compatible
Dashboard results. The good thing about CTest is that it is self sustained. All
you need to do testing is CTest. Also, if you use CMake, you already have
CTest. Detailed description of CTest option can be seen by running:
 
ctest --help
or
 
ctest --help-full
 
A simple way to submit Experimental dashboard is:
 
ctest -D Experimental
 
This will configure project, build project and check for any warnings or
errors, run tests if any tests are specified, run coverage if any coverage
files are specified, and submit to the specified ''Dart'' server.
 
To convert existing Dart Client run from the project, find lines like:
 
<pre>
cd ProjectNightlyBuildDirectory
tclsh /location/of/Dart/Source/Client/DashboardManager.tcl DartConfiguration.tcl \
Nightly Start Update Configure Build Test Submit
</pre>
 
and convert them to CTest style:
 
cd ProjectNightlyBuildDirectory
ctest -D Nightly
 
Dashboard can be also generated in stages. This way partial testing results can be submitted and seen before long operations are completed:
 
cd ProjectNightlyBuildDirectory
ctest -D NightlyStart
ctest -D NightlyUpdate
ctest -D NightlyConfigure
ctest -D NightlyBuild
ctest -D NightlySubmit
ctest -D NightlyTest
ctest -D NightlyCoverage
ctest -D NightlySubmit
ctest -D NightlyMemCheck
ctest -D NightlySubmit
 
 
==Advanced CTest==
 
CTest has several additional features that include:
 
# FTP/HTTP/SCP submission support
# Run individual tests, subset of tests, exclude tests, etc.
# Dynamic analysis using Valgrind or Purify
# Customization of the testing by providing:
#* Custom build error/warning regular expressions
#* Ability to suppress some tests from being tested or memory checked and ability to run subset of tests
#* Ability to run commands before and after tests are run
# Ability to run whole testing process described in a single script
 
===Submission Of Tests===
 
CTest currently supports three methods directly and any other indirectly. Direct methods are HTTP, FTP, and SCP. Both HTTP and FTP methods require extra trigger mechanism, while SCP method relies on the fact that files are on the right place. To set apropriate submission method, set DROP_METHOD variable in DartConfig.cmake.
 
Example for HTTP submission would be:
<pre>
SET (DROP_METHOD http)
SET (DROP_SITE "public.kitware.com")
SET (DROP_LOCATION "/cgi-bin/HTTPUploadDartFile.cgi")
SET (TRIGGER_SITE
      "http://${DROP_SITE}/cgi-bin/Submit-CMake-TestingResults.pl")
</pre>
For FTP submission:
<pre>
  SET (DROP_METHOD ftp)
  SET (DROP_SITE "public.kitware.com")
  SET (DROP_LOCATION "/incoming")
  SET (DROP_SITE_USER "ftpuser")
  SET (DROP_SITE_PASSWORD "public")
  SET (TRIGGER_SITE
      "http://${DROP_SITE}/cgi-bin/Submit-CMake-TestingResults.pl")
</pre>
 
===Running Individual Tests===
 
CTest supports two different ways of specifying subset of tests to run.
 
The first way is to specify the regular expression using -R and -E. -R specifies tests to be included and -E specifies the tests to be removed. For example, when running ctest in show-only mode, where no tests are run, we may see something like:
 
Test project
  1/ 13 Testing PythonDataDesc               
  2/ 13 Testing VTKTest                     
  3/ 13 Testing SystemInformation           
  4/ 13 Testing TestVTKWriters               
  5/ 13 Testing TestVTKPython               
  6/ 13 Testing VTKPythonMultiGrid           
  7/ 13 Testing IronImage                   
  8/ 13 Testing IronImageMagic               
  9/ 13 Testing IronImageStrideMagic         
  10/ 13 Testing IronRectMagic               
  11/ 13 Testing IronRectStrideMagic         
  12/ 13 Testing IronStructMagic             
  13/ 13 Testing IronStructStrideMagic
 
If we now run
 
  ctest -R Python
 
We will only see tests that contain string ''Python'':
 
Test project
  1/  3 Testing PythonDataDesc               
  2/ 3 Testing TestVTKPython               
  3/ 3 Testing VTKPythonMultiGrid
 
We can also ommit tests using -R, for example:
 
  ctest -e Iron
 
will produce:
 
Test project
  1/ 6 Testing PythonDataDesc               
  2/ 6 Testing VTKTest                     
  3/  6 Testing SystemInformation           
  4/  6 Testing TestVTKWriters               
  5/  6 Testing TestVTKPython               
  6/  6 Testing VTKPythonMultiGrid
 
Both -R and -E can be used at the same time.
 
The second way of specifying tests is using explicit test number option -I:
 
  ctest -I 3,5
 
will run tests:
 
Test project
Running tests: 3 4 5
  3/ 13 Testing SystemInformation           
  4/ 13 Testing TestVTKWriters               
  5/ 13 Testing TestVTKPython
 
We can also specify stride:
 
  ctest -I ,,3
 
will run tests:
 
Test project
Running tests: 1 4 7 10 13
  1/ 13 Testing PythonDataDesc               
  4/ 13 Testing TestVTKWriters               
  7/ 13 Testing IronImage                   
  10/ 13 Testing IronRectMagic               
  13/ 13 Testing IronStructStrideMagic
 
Or run individual tests:
 
  ctest -I 4,4,,4,7,13
 
will run tests:
 
Test project
Running tests: 4 7 13
  4/ 13 Testing TestVTKWriters
  7/ 13 Testing IronImage
  13/ 13 Testing IronStructStrideMagic
 
Make sure that the first and second argument are the index of the first test
 
===Dynamic Analysis===
 
Software development can be significantly hindered when memory leaks are introduced in the code. Both Purify and Valgrind can catch most of them. Setting up both is extremely easy.
 
For example, to setup purify, all you have to do is to add:
 
PURIFYCOMMAND:FILEPATH=c:/Progra~1/Rational/common/purify.exe
 
To your cmake cache. Same way to setup valgrind, you add:
 
MEMORYCHECK_COMMAND:FILEPATH=/home/kitware/local/bin/valgrind
 
You can add additional options by specifying MEMORYCHECK_COMMAND_OPTIONS and MEMORYCHECK_SUPPRESSIONS_FILE.
 
Make sure to run:
 
ctest -D NightlyMemoryCheck
 
or
 
ctest -D NightlyStart
ctest -D NightlyUpdate
ctest -D NightlyConfigure
ctest -D NightlyBuild
ctest -D NightlyTest
ctest -D NightlyMemCheck
ctest -D NightlySubmit
 
===Customizing CTest===
 
CTest can be customized by providing CTestCustom.ctest file in the build tree. This file may contain any SET command for any CMake variable, but the following ones will be used:
 
{|border="1"
|- bgcolor="#abcdef"
! Variable !! Description
|-
| CTEST_CUSTOM_ERROR_MATCH || Regular expression for errors during build process
|-
| CTEST_CUSTOM_ERROR_EXCEPTION || Regular expression for error exceptions during build process
|-
| CTEST_CUSTOM_WARNING_MATCH || Regular expression for warnings during build process
|-
| CTEST_CUSTOM_WARNING_EXCEPTION || Regular expression for warning exception during build process
|-
| CTEST_CUSTOM_TESTS_IGNORE || List of tests to ignore during the ''Test'' stage
|-
| CTEST_CUSTOM_MEMCHECK_IGNORE || List of tests to ignore during the ''MemCheck'' stage
|-
| CTEST_CUSTOM_PRE_TEST || Command to execute before any tests are run during ''Test'' stage
|-
| CTEST_CUSTOM_POST_TEST || Command to execute after any tests are run during ''Test'' stage
|-
| CTEST_CUSTOM_PRE_MEMCHECK || Command to execute before any tests are run during ''MemCheck'' stage
|-
| CTEST_CUSTOM_POST_MEMCHECK || Command to execute after any tests are run during ''MemCheck'' stage
|}
 
Example of CTestCustom.ctest file would be:
 
<pre>
SET(CTEST_CUSTOM_MEMCHECK_IGNORE
  ${CTEST_CUSTOM_MEMCHECK_IGNORE}
  TestSetGet
  otherPrint-ParaView
  Example-vtkLocal
  Example-vtkMy
 
  # These tests do not actually run any VTK code
  HeaderTesting-Common
  HeaderTesting-Filtering
  HeaderTesting-Graphics
  HeaderTesting-Imaging
  HeaderTesting-IO
 
  # this one runs python which then runs two
  # program so no memory checking there
  Sockets-image
  )
 
SET(CTEST_CUSTOM_WARNING_MATCH
  ${CTEST_CUSTOM_WARNING_MATCH}
  "{standard input}:[0-9][0-9]*: Warning: "
  )
 
IF("@CMAKE_SYSTEM@" MATCHES "OSF")
  SET(CTEST_CUSTOM_WARNING_EXCEPTION
    ${CTEST_CUSTOM_WARNING_EXCEPTION}
    "XdmfDOM"
    "XdmfExpr"
    "vtkKWApplication"
    "vtkKWObject"
    )
ENDIF("@CMAKE_SYSTEM@" MATCHES "OSF")
 
SET(CTEST_CUSTOM_WARNING_EXCEPTION
  ${CTEST_CUSTOM_WARNING_EXCEPTION}
  "tcl8.4.5/[^/]+/../[^/]+/[^.]+.c[:\"]"
  "tk8.4.5/[^/]+/[^/]+.c[:\"]"
  "VTK/Utilities/vtktiff/"
  "Utilities/vtkmpeg2/"
  "Utilities/hdf5/"
  "xtree.[0-9]+. : warning C4702: unreachable code"
  "warning LNK4221"
  "variable .var_args[2]*. is used before its value is set"
  )
</pre>
 
===CTest Scripting===
 
For an example of how CTest can run the whole testing process described in a
single script, look at how CMake dashboards are created with the
[http://www.cmake.org/HTML/TestingSetup.html CTest -S script].
 
==Conclusion==
 
Performing tests on the project is a great software development practice and can result in significant improvement on the quality of the project. CTest provides a simple and reliable way of performing nightly, continuous, and experimental tests.
 
More information about CTest can be found in
[http://www.kitware.com/products/cmakebook.html Mastering CMake].

Latest revision as of 15:40, 30 April 2018


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