The Sleeper

Definition:

• A test that is destined to fail at some specific time and date in the future. This is often caused by incorrect bounds checking when testing code which uses a Date or Calendar object. Sometimes, the test may fail if run at a very specific time of day, such as midnight.

Also Known As:

• Mount Vesuvius

References:

Quality attributes

• - Code Example

• - Cause and Effect

• - Frequency

• - Refactoring

• Anti-Patterns - Digital Tapestry

• Categorising Test Smells

• Unit testing Anti-patterns catalogue