20.8. Glossary¶

assert statement: A statement that verifies that a boolean condition is true.
design by contract: An approach to designing functions that specifies function behavior using preconditions and postconditions.
postcondition: Part of a function specification that states the work the function completed by the function if the precondition is satisfied.
precondition: A boolean condition that the caller of a function must ensure is true in order for the function to produce correct results
specification-based tests: tests that are designed based only on the information in the function specification, without considering any of the details in the function implementation.
unit test: Code that tests a function to determine if it works properly