Tests does not execute when the assembly is not in the current directory or PATH

[ramon-garcia]

When one loads an assembly from the menu, and then tries to execute tests, the execution fails silently. No log file, no message, nothing.

After debugging the code, one finds that the full path of the assembly is lost in the test discovery, and then the worker tries to execute the assembly without the full path.

In addition, the diagnostic information generated by the worker in Console.Writeline, should be redirected to a file so that it can be read later. At present, it is silently lost.