Glossary of software testing terms

The status of a test result in which the actual result does not match the expected result.

The backup operational mode in which the functions of a system that becomes unavailable are assumed by a secondary system.

An event in which a component or system does not perform a required function within specified limits. [Reference: After ISO 24765]

The physical or functional manifestation of a failure. [Reference: ISO 24765]

A systematic approach to risk identification and analysis of identifying possible modes of failure and attempting to prevent their occurrence. - See also: Failure Mode, Effect and Criticality Analysis

The ratio of the number of failures of a given category to a given unit of measure. [Reference: ISO 24765]

See false-positive result.

A test result which fails to identify the presence of a defect that is actually present in the test object.

See false-negative result.