Port atoum tests to PHPUnit

[k00ni]

This pull request replaces atoum tests with PHPUnit tests.

We have code coverage now (via scrutinizer):

Reasons for this pull request

• use PHPUnit, because it more known and better integrated as atoum
• enable code coverage analysis
• aligned and fixed some tests (e.g. removed code which was commented out)

Changes

• test related files are located in test/
• tests itself are located in tests/
• replaced many atoum tests with PHPUnit ones
• put tests and test related files into a separate namespace (using PSR-4)
• remove usages of full class paths, used use Class instead
• use functions to get class-instances during tests, like for Parser. That makes tests more decoupled from the actual class constructor and in case it changes, only 1 place has to be adapted.

TODOs:

• port remaining tests
• integrate in Travis
• generate code coverage
  • prepare for coveralls? - use https://scrutinizer-ci.com/docs/build/code_coverage instead
• fix issues raised by @j0k3r

[j0k3r]

Good job!
I won't review all the changes from Atoum to PHPUnit, to much stuff to check.
I trust you.

You should add the scrutinizer badge to the README.

[j0k3r]

I'm wondering why does Scrutinizer doesn't show up along with Travis build 🤔

[k00ni]

I'm wondering why does Scrutinizer doesn't show up along with Travis build

I don't know. But in case you are interested in the latest results: https://scrutinizer-ci.com/g/smalot/pdfparser/?branch=feature/switch-to-phpunit

[k00ni]

I am still not sure when it runs code coverage. Even if you have logging in the phpunit.xml it wont create coverage. You always had to use the --coverage-* option when calling PHPUnit. At least when i run it locally (vendor/bin/phpunit).

[j0k3r]

With logging in the phpunit.xml, the test suite is slower and it generates the coverage.

Without logging:

With logging:

You can see it generates the coverage.

[k00ni]

Good catch! I just saw, that i used a Docker container without xdebug installed.

OK anything left or can i merge it?

[j0k3r]

Looks great, you can squash your commits 👍