Revision as of 07:49, 18 March 2008 by Aleitner (Talk | contribs)

What is the CDD extension for EiffelStudio?

CDD (short for Contract Driven Development) is a project developed at ETH Zurich. The extension adds full support for unit testing to EiffelStudio. It also introduces the new idea of extracting test cases automatically from failures observed via the debugger. The following lists the main features of CDD:

  • Automated extraction of test cases from failures (For every exception thrown a new test case is created)
  • Visualization of test cases and their outcomes
  • One button creation of manual test cases
  • Automated execution of test cases in the background
  • Limit visible test cases via predefined filters and custom tags
  • Testing occurs in the background and is undisruptive to the developer
  • Easy test case management through tags

If you have questions, feedback, or would like to report a bug please visit the CDD forum

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Download CDD

The following packages contain the full EiffelStudio 6.1 plus the CDD extension. You do not need to have EiffelStudio installed already in order to install below packages. On Windows you do have to have either the Platform SDK or Visual C++ installed. Do not use EiffelStudio with the gcc/mingw or the .Net backend.


Download the above file and install it just like you would install a EiffelStudio tar ball. Afterwards proceed to section "Using CDD". Make sure you set/update the environment variables PATH, ISE_EIFFEL, and ISE_PLATFORM according to the installation instructions.


  • Full Windows version (with installer):
  • Note 1: Installation is independent of installations of official EiffelStudio 6.1 (neither overwrites nor invalidates nor is influenced by those)
  • Note 2: If you have a previous installation of the CDD Edition of EiffelStudio installed, you need to uninstall it first. If you want to reuse the installation directory, you need to manually delete all EIFGENs in its subdirectories after the uninstall procedure.
  • Note 3: Do not use the gcc/mingw or the .NET compiler backend. You will have to use the Microsoft C compiler. You can get it either by installing Visual C++, or via (the freely available) Microsoft Platform SDK.Have a look at to learn how to install either compiler.