The quality of the translation results of Delphi code to C# with Delphi2C# is guaranteed by a collection of test files. The test cases mostly are modified examples from Embarcadero and from Delphi Basics.
The output operations in the examples were replaced by boolean expressions which can be checked at the execution of the tests. The modified files then were inserted into a DUnit application. (DUnit is a testing framework which is integrated into the RAD Studio.)
After verification that the tests are working correctly in Delphi, the code is translated with Delphi2C# to C#. The translated test files then are inserted into aC#test application. There the tests are repeated then in C#.
The examples below are only a small selection of the whole test suite, which comprises more than a hundred of such test files.