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In order to automate performance testing, we will start by creating a very simple blackfire.yml file in our repository. This file will contain our tests. A test should be composed of a name, a regular expression and a set of assertions. It is always preferable to avoid creating volatile time tests as these make for very brittle tests that might yield very different results from one profiling session to the next. Examples of strong performance tests would be to check CPU or memory consumption, number of SQL queries or testing results by profile comparisons. In our case, we will create a very basic and volatile time test just for the sake of giving a short and simple example. Here is the content...
