The test cases in HBT has a NINE-dimensional form (or shape), with each dimension focusing on a specific attribute of goodness of the test case.

The nine dimensions are are as shown below:

1Cleanliness levelWhat level of quality or cleanliness are these (test cases) focused on?
2Entity being validatedIs it an elemental component, technical feature or business flow?
3Potential defect type expected to be uncoveredWhat type (or class of defect) is it expected to uncover? And the types of tests needed to uncover these?
4Focus (Conformance or Robustness) Does it validate the correct use or recover-ability in the case of abuse?
5Priority/ImportanceThe perceived importance of the test case to the overall customer experience.
6Stage it needs to be executedAt what stage of development is it expected to be executed?- Sanity check, Validation check,Regression.
7Intended execution frequencyHow frequently do we expect these to execute? Daily, weekly, once a build, etc.
8Optimal sequencing or threading of test casesWhich is the next text case to execute when the current one fails? This is especially useful for test automation to ensure that we do not “baby sit” the scripts to ensure unattended long runs.
9Mode of executionHow do we intend to execute? Manually or Automated?
The first FOUR dimensions focus on efficacy aspects of test cases while the remaining FIVE dimensions focus on efficiency of execution.