The content of this blog is my personal opinion only. Although I am an employee - currently of Imagination Technologies's MIPS group, in the past of other companies such as Intellectual Ventures, Intel, AMD, Motorola, and Gould - I reveal this only so that the reader may account for any possible bias I may have towards my employer's products. The statements I make here in no way represent my employer's position, nor am I authorized to speak on behalf of my employer. In fact, this posting may not even represent my personal opinion, since occasionally I play devil's advocate.

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Monday, September 26, 2016



'via Blog this'

Not a bad summary:

Test::Unit is a port of JUnit into Perl.  Familiar to xUnit users.


Much like xUnit.  xUnit inspired. Unfamiliar names muck up porting, but can live with that.

Plays well with traditional Perl test tools like TAP and Test::Builder.

Somewhat object oriented.  But

 Test::Class does not provide its own test functions, but uses those provided by Test::More and friends 
which are free functions, so somewhat annoying to extend (e.g. to report error location accurately, when you build meta-tests that call multiple asserts internally). But you can access the underlying Test::Builder routines.

Uses :Test attribute so that introspection can find test functions to rub, including setup/teardown.

Pleasant - many folks have had to add such "keep running" behaviour to xUnit.

Unlike JUnit the test functions supplied by Test::More et al do not throw exceptions on failure. They just report the failure to STDOUT where it is collected by Test::Harness. This means that where you have
sub foo : Test(2) {
      ok($foo->method3) or die "method3 test failure";

The second test will run if the first one fails But the third will stop the fourth from running.

Test::Unit is a port of JUnit http://www.junit.org/ into perl. If you have used JUnit then the Test::Unit framework should be very familiar.

It is class based so you can easily reuse your test classes and extend by subclassing. You get a nice flexible framework you can tweak to your heart's content. If you can run Tk you also get a graphical test runner. However, Test::Unit is not based on Test::Builder. You cannot easily move Test::Builder based test functions into Test::Unit based classes. You have to learn another test assertion API.

Test::Unit implements it's own testing framework separate from Test::Harness. You can retrofit *.t scripts as unit tests, and output test results in the format that Test::Harness expects, but things like todo tests and skipping tests are not supported.

But... the Test::Case author does not say that Test::Unit is mostly abandoned as odf 2016, possibly since 2011 or before.  


A very simple unit testing framework. If you are looking for a lightweight single module solution this might be for you. The advantage of Test::SimpleUnit is that it is simple! Just one module with a smallish API to learn. Of course this is also the disadvantage.

It's not class based so you cannot create testing classes to reuse and extend. It doesn't use Test::Builder so it's difficult to extend or integrate with other testing modules. If you are already familiar with Test::BuilderTest::More and friends you will have to learn a new test assertion API. It does not support todo tests.

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