Add integration tests

[Czechh]

What does this PR do?

Adds integration tests

Motivation

This will improve our confidence in future releases.

Testing Guidelines

Running multiple times the integration tests.

Types of changes

• [ ] Bug fix
• [ ] New feature
• [ ] Breaking change
• [X] Misc (docs, refactoring, dependency upgrade, etc.)

Checklist

• [X] This PR's description is comprehensive
• [ ] This PR contains breaking changes that are documented in the description
• [ ] This PR introduces new APIs or parameters that are documented and unlikely to change in the foreseeable future
• [ ] This PR impacts documentation, and it has been updated (or a ticket has been logged)
• [ ] This PR's changes are covered by the automated tests
• [ ] This PR collects user input/sensitive content into Datadog

[codecov-commenter]

Codecov Report

Merging #40 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #40   +/-   ##
=======================================
  Coverage   89.17%   89.17%           
=======================================
  Files          12       12           
  Lines         573      573           
=======================================
  Hits          511      511           
  Misses         46       46           
  Partials       16       16           

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