Put integration testing infrastructure in place

[tugberkugurlu]

This PR is to add testing infrastructure in place and make the tests run on build server. This is fixing #33.

• [x] Add a sample test project
• [x] Add a sample test
• [x] Make the tests build on build server
• [x] Make the tests run on build server
• [x] Ensure that build fails when a test fails

[tugberkugurlu]

build fails when a test fails: