Software Development Cross Solution - Index of - Free

one-click testing
Testing EVERYTHING with one step Well, one command actually
There are lots more advantages to automating your tests. As well as not
requiring you to sit there and manually run the tests yourself, you also build
up a library of tests that are all run at the same time to test your software
completely every time you run the test suite:
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248 Chapter 7
Build up a suite of tests
As your software grows so will the tests that need to be applied to it. At first,
this might seem a little scary, especially if you’re running tests by hand. Large
software systems can have literally thousands of tests that take days of developer
time to run. If you automate your tests you can collect all the tests for your
software into one library and then run those tests at will, without having to rely
on having somebody, probably a poor test engineer who looked at you wrong,
running those tests manually for a day or so.
Run all your tests with one command
Once you have a suite of tests that can be run automatically in a framework, the
next step is to build that set of tests such that they can all be run with just one
command. The easier a test suite is to run, the more often it will actually be used
and that can only mean that your software quality will improve. Any new tests
are simply added to the test suite, and bang, everyone gets the benefit of the test
you have written.
Get regression testing for free
The big advantage of creating a one-command suite of tests that you continually
add to as you add more code to your software is that you get regression
testing for free. Detecting when a new change that you’ve made to your
software has actually introduced bugs in the older code, called software
regression, is a danger for any developer working with old or inherited code.
The best way to deal with the threat of regression problems is to not only run
your own tests for your newly added code, but to run all the older tests as well.
Now, because you’ll be adding your new tests into your test suite, you’ll get this
for free. All you have to do is add your new tests to the existing test suite and kick
things off with one command—you’ll have regression tested your changes.
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Of course, this relies on the
existing code base having a
suite of tests available for
you to extend. Check out
Chapter 10 for what to do
when that isn’t the case.