public:99_annexes:annex-b-terms-and-definitions:f:fault

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public:99_annexes:annex-b-terms-and-definitions:f:fault [2026/09/12 17:42] – removed - external edit (Unknown date) 127.0.0.1public:99_annexes:annex-b-terms-and-definitions:f:fault [2026/09/12 17:43] (current) – ↷ Links adapted because of a move operation nick_dido
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 +====== Fault ======
  
 +[[public:99_annexes:annex-b-terms-and-definitions:start|Go up to Terms and Definitions]]
 +
 +===== Discussion =====
 +
 +A Fault is a condition of a test object or its operating environment that causes or contributes to a difference between specified and actual behaviour.
 +
 +A Fault differs from a Failure. A Fault is a condition that causes or contributes to incorrect behaviour. A Failure occurs when the test object does not perform a required function or does not satisfy a specified requirement.
 +
 +A Fault also differs from a [[public:99_annexes:annex-b-terms-and-definitions:t:test_execution_exception|Test Execution Exception]]. A Fault exists within or affects the test object or its operating environment. A Test Execution Exception identifies a condition arising during [[public:99_annexes:annex-b-terms-and-definitions:t:test_execution|Test Execution]] that differs from a governing requirement, procedure, precondition, sequence, constraint, or expected result.
 +
 +A Fault may exist without producing an immediately observable Failure. The Fault may remain dormant until a particular state, input, interaction, timing condition, or resource condition activates it.
 +
 +===== Definition =====
 +
 +a condition of a test object or its operating environment that causes or contributes to a difference between specified and actual behavior
 +
 +===== Source =====
 +
 +DIDO-TE controlled definition, informed by the dependability and software-engineering concepts in ISO/IEC/IEEE 24765, //Systems and software engineering — Vocabulary//.
 +
 +===== Note =====
 +
 +The governing [[public:99_annexes:annex-b-terms-and-definitions:t:test_definition|Test Definition]] identifies the specified behavior used to determine whether a Fault causes or contributes to a difference.
 +
 +A Fault may affect state, activity, interaction, processing, timing, input, output, communication, resource use, or another specified operating condition.
 +
 +A Fault may originate within the test object or within a condition governing its operation.
 +
 +===== Example =====
 +
 +A Test Definition specifies that a Node SHALL respond to an authorized request within 200 milliseconds. A deliberately introduced communication delay causes the response to exceed that limit. The communication-delay condition is a Fault. The response exceeding 200 milliseconds is the resulting difference between specified and actual behavior.
 +
 +----
 +
 +<WRAP centeralign>
 +© 2026 Dido Solutions, Inc. and Jackrabbit Consulting, Inc.
 +</WRAP>