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matlab-xunit

xUnit for MATLAB with JUnit-compatible XML output

README

Testing is wonderful! Let's make it easier and more rewarding!

The most popular testing platform for MATLAB functions and classes is/was Steve Eddins' excellent MATLAB xUnit package.

The previous maintainer, Thomas Smith, made two additions to that package: the ability to give output in a JUnit-compatible XML format, and the ability to run DocTests, similar to the doctest module in Python or vignettes in R.

I've made one additional change: renaming runtests to runxunit so that it's compatible with MATLAB R2013a and newer. (runtests is now a built-in function.)

Other contributors have added compatibility with R2016b and newer, bug fixes, and internal refactorings.

Installation and Usage

To install matlab-xunit, clone or download this from GitHub, and put the matlab-xunit/src and matlab-xunit/matlab-xunit directories on your MATLAB path (using addpath).

Once you've written some unit tests (see xUnit's help), you can then run:

runxunit path/to/test/dir

If everything goes well, you'll see some output like this:

>> runxunit ./tests
Test suite: tests
Test suite location: ./tests
17-Jul-2014 20:49:47

Starting test run with 153 test cases.
....................
....................
....................
....................
....................
....................
....................
.............
PASSED in 2.922 seconds.

If any of the tests failed, they'll be marked with a F instead of a . and more info about the failure will be printed at the end. You can also get more verbose info on all tests, both passes and failures, by using the -verbose flag.

XML Output

Why would you want to do that? Well, because other tools understand it. In particular, I'm using the Jenkins continuous integration system (http://jenkins-ci.org/) to automatically run unit tests when I check in code. Jenkins understands JUnit's XML report format, and can display it in very nice ways. By creating a test report file in the same format, we can leverage all of that.

For example, here's a screenshot of the table Jenkins generates from a single build's report:

And here's a graph of the test trend:

The implementation is based on xml_io_tools by Jaroslaw Tuszynski, which is a nice way to generate XML in MATLAB. It uses about 1/3 the lines of code as MATLAB's built-in xmlwrite.

Usage

Once you've written some unit tests (see xUnit's help), you can then run:

runxunit path/to/test/dir -xmlfile testreport.xml

Unsurprisingly, this will run your unit tests and put the results into testreport.xml in the current directory.

Usage with Jenkins

OK, this is really cool, but involves some setup. First, you're going to have to either install Jenkins on the machine that has MATLAB, or give Jenkins remote access to that machine (there may be MATLAB licensing issues to this, I have no idea). As a note, installing Jenkins is incredibly easy: you download one file and run one command.

Now, you need to create a job that checks out your code from Subversion or whatever, and then runs your tests. I'm not going to run you through the whole thing, but here are the two important points:

First, you need a build step that will run the tests. Mine looks something like this:

/path/to/matlab -nodisplay -r "try; \
    addpath /path/to/xunit-matlab-doctest/xunit; \
    runxunit -xmlfile testreport.xml the_tests/; \
  catch Ex; fprintf(2, Ex.getReport()); quit(1); end; \
  quit(0);"

And second, you need to check the Jenkins box that says "Publish JUnit test result report." I tell it to look at **/testreport.xml.

Now save the configuration, tell the project to Build Now, and you should have a lovely display of what tests were run, and which failed!

DocTests

As of version 4.0.0, DocTests is no longer part of the "core" matlab-xunit and lives in its own repository at matlab-xunit-doctests.

Versioning

This codebase is over 5 years old now, and has had several maintainers, so past versioning is kind of a mess. Starting with version 4.0.0, it follows Semantic Versioning for versions, and Semanticly Versioned Names for tags and releases.

Contributing

1. Fork it ( https://github.com/psexton/matlab-xunit/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

Suggestion: Please try to keep contributions to one {bug fix, feature, etc} per pull request. If you've got 3 unrelated bug fixes, submit 3 pull requests. If I can read through your changes in < 5 minutes, I'll probably merge it immediately. If it's a huge patch that touches dozens of files for multiple reasons, I'll probably put off merging it until I can do a more thorough code review. And then it will drop off my mental radar. (But not because I don't like you!)

License

BSD 3-Clause