Google Web Toolkit

Reproducible Test Cases

The key to a high-bandwidth interaction with the support team is the effective communication of the issue you are experiencing. The best way to communicate issues with the tool is through a test case that we can run on our end that demonstrates the problem. Once we can feel your pain we can more easily diagnose and address it.

What defines a good test case?

There are a few ingredients that make up a good test case. Good test cases are:

  • Isolated -- the test should be runnable in isolation. Tests that expect the environment to be in a particular state when run violate this premise.
  • Standalone -- the test should be as stand-alone as possible. Ideally the test should be a single class (or package) that can be imported into a developer's workspace. If necessary, the test might also be parceled up in a new project.
  • Lean -- the test should be as minimal as possible. This means:
    • it should be as simple as possible and
    • it should introduce a minimal set of dependencies (ideally none).

If your test case triggers a specific exception, please include your entire Eclipse ".log" file (found in your <workspace>/.metadata directory) and not just the exception itself as important clues may appear earlier in the log. Also include your complete Eclipse configuration from "Help > About > Installation Details > Configuration".

This goes for Features Too!

In addition to communicating about bugs, this is also an effective way to communicate about feature ideas too. Feature requests that are fleshed out with reproducible examples are much easier for developers to dig into, assess and estimate. They also provide a good shared language for exchanging ideas.

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