THE TEST MODEL

THE TEST MODEL

The test model is a representation of what will be tested and how it will be tested . It is a view of the design and implementation models, depicting the tests themselves , as well as aspects of the target-of-test that are relevant to the testing effort. It includes the collection of the test cases, test procedures, test scripts, and expected test results along with a description of their relationships.

The test model includes the following:

• Test cases

  The set of test data, execution conditions, and expected test results developed for a specific test objective. Test cases can be derived from use cases, design documents, or the software code. A test case can be implemented by one or more test procedures.

• Test procedures

  The set of detailed instructions for the setup, execution, and evaluation of test results for test cases. A test procedure implements one or more test cases. A test procedure may also implement only part of a test case, such as some alternate flow in a use case.

• Test scripts

  The computer-readable instructions that automate the execution of test procedures. A test script automates the execution of (the whole or parts of) one or more test procedures.

• Test classes and components

  The classes and components that realize the test designs, including drivers and stubs.

• Test collaborations

  The collaborations, represented as collaboration or sequence diagrams, that depict time- sequenced message flow between test components and targets-of-test that occur during testing.

• Notes

  Textual information that describes constraints or additional information used in the test model. Notes can be attached to any test model element.

Figure 12-1 shows the major elements in the test model and their relationships.

Figure 12.01. Test cases, test procedures, and test scripts for an ATM system