improve the testing strategy

[bwl21]

Request

as we continuously develop zupfnoter, we should have a better testing appraoch. Even I we implement new features against testcases, we do not really have regression tests. The regression tests should reveal

• verify the generated pdfs
• verify the generated messages
• verify the generated music
• investigate the user interface

solution approach

As the generated pdf evolve over the time, we could use an approach to

• create a baseline based on a given set of sources
• create the files with the current version and create a graphical diff
• inspect this diff and record it in a testseession-report.