SSCH63-150 — Unit Testing For Legacy Code

SSCH63-150 governs unit testing for legacy code and provides best practices for newly developed code.

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  • Publication number: SSCH63-150
  • Title: UNIT TESTING FOR LEGACY CODE
  • Date: 2024-12-12

View SSCH63-150 on armypubs.army.mil

It covers unit-testing concepts, test objectives and benefits, isolated test design, automation, code coverage, and legacy-code best practices. It describes how developers create, execute, and analyze unit tests, including test-driven development and automated testing frameworks.

Applies to: This publication applies to all SSC commands, including SSC-gained Air National Guard, Air Force Reserve Command, and United States Air Force members.

Topics covered

  • Unit testing for legacy code
  • Test-driven development
  • Automated test scenarios
  • Code coverage techniques
  • Isolated unit tests
  • Unit testing frameworks
  • Test execution and analysis

Questions and answers

When should the unit test be created in test-driven development?

TDD requires the developer to create the unit test first based on the requirement or user story that has been provided. (paragraph 4)

What happens when a unit test is executed?

Once executed, each test will result in a pass or failure representing the behavior of the unit with the designed scenario. (paragraph 3)

When can errors or issues with the code be identified and resolved?

Errors or issues with the code can be identified and resolved at this point. (paragraph 4)

What does a unit test need to do when code requires other system data?

The unit test needs to run in isolation.

How should unit tests be handled before deployment when embedded in the code?

If the unit tests are embedded within the code itself, developers will comment out the unit tests (or remove them altogether) just prior to deployment. (paragraph 5)

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