====== ENV-004l — Validate Environmental Determinism ======
[[dido:03-dido-te:99-annexes:annex-c-requirements:03-functional-requirements:03-01-test-environment-requirements:env-004-provide-deterministic-test-environment:start|Go to ENV-004 — Provide Deterministic Test Environment]]
===== Statement =====
The [[dido:99_annexes:annex-b-terms-and-definitions:d:dido-te|DIDO-TE]] SHALL validate environmental determinism before each [[dido:99_annexes:annex-b-terms-and-definitions:t:test_execution|Test Execution]].
===== Derived From =====
* [[dido:03-dido-te:99-annexes:annex-c-requirements:03-functional-requirements:03-01-test-environment-requirements:env-004-provide-deterministic-test-environment:start|ENV-004 — Provide Deterministic Test Environment]]
* [[dido:03-dido-te:99-annexes:annex-c-requirements:03-functional-requirements:03-01-test-environment-requirements:env-004-provide-deterministic-test-environment:env-004j-detect-environmental-variation|ENV-004j — Detect Environmental Variation]]
* [[dido:03-dido-te:99-annexes:annex-c-requirements:03-functional-requirements:03-01-test-environment-requirements:env-004-provide-deterministic-test-environment:env-004k-record-environmental-variation|ENV-004k — Record Environmental Variation]]
* [[dido:03-dido-te:99-annexes:annex-b-references:dte-005|[DTE5] DIDO-TE Requirements Register]], source requirement identifier and obligation to be assigned
* [[dido:03-dido-te:99-annexes:annex-b-references:dte-006|[DTE6] Structured Information Processing Reference Architecture (SIP-RA)]]
* [[dido:03-dido-te:99-annexes:annex-b-references:dte-007|[DTE7] Federated Data Interpretation Systems Reference Architecture (FDIS-RA)]]
===== Rationale =====
Environmental determinism exists when the [[dido:99_annexes:annex-b-terms-and-definitions:t:test_environment|Test Environment]] satisfies the controlled conditions specified by the applicable [[dido:99_annexes:annex-b-terms-and-definitions:t:test_definition|Test Definition]].
Validation determines whether the applicable Baselines, Configurations, Test Inputs, time sources, random value sources, execution-ordering controls, resource allocations, external dependencies, and communication conditions satisfy their specified criteria.
Pre-execution validation prevents an invalid environmental condition from undermining the interpretation, [[dido:99_annexes:annex-b-terms-and-definitions:r:reproducibility|Reproducibility]], or [[dido:99_annexes:annex-b-terms-and-definitions:c:comparability|Comparability]] of the resulting [[dido:99_annexes:annex-b-terms-and-definitions:t:test_result|Test Results]].
===== Applies To =====
* [[dido:99_annexes:annex-b-terms-and-definitions:t:test_environment|Test Environment]]
* [[dido:99_annexes:annex-b-terms-and-definitions:t:test_definition|Test Definition]]
* [[dido:99_annexes:annex-b-terms-and-definitions:t:test_execution|Test Execution]]
* [[dido:99_annexes:annex-b-terms-and-definitions:t:test_object|Test Object]]
* [[dido:99_annexes:annex-b-terms-and-definitions:n:node|Node]]
* [[dido:99_annexes:annex-b-terms-and-definitions:t:test_input|Test Input]]
* [[dido:99_annexes:annex-b-terms-and-definitions:t:test_resource|Test Resource]]
* [[dido:99_annexes:annex-b-terms-and-definitions:b:baseline|Baseline]]
* [[dido:99_annexes:annex-b-terms-and-definitions:c:configuration|Configuration]]
* [[dido:99_annexes:annex-b-terms-and-definitions:c:constraint|Constraint]]
* [[dido:99_annexes:annex-b-terms-and-definitions:e:evidence|Evidence]]
===== Verification =====
Verification confirms that:
* The applicable Test Definition identifies each environmental condition subject to validation.
* Each validation criterion has a specified value, state, range, sequence, or tolerance.
* The DIDO-TE evaluates each validation criterion before Test Execution.
* The DIDO-TE identifies each criterion as satisfied or unsatisfied.
* The DIDO-TE produces an environmental-determinism validation outcome.
* A valid outcome requires satisfaction of every mandatory environmental criterion.
* The validation outcome identifies each unsatisfied criterion.
* The validation outcome identifies each detected environmental variation.
* The DIDO-TE records the validation outcome as [[dido:99_annexes:annex-b-terms-and-definitions:e:evidence|Evidence]].
* The DIDO-TE maintains [[dido:99_annexes:annex-b-terms-and-definitions:t:traceability|Traceability]] among the validation outcome, the Test Definition, the environmental conditions, and the proposed Test Execution.
* An omitted, incomplete, incorrect, unsupported, or untraceable validation constitutes nonconformance with this requirement.
Verification includes:
* Inspection of the environmental criteria specified by the Test Definition
* Inspection of environmental-determinism validation procedures
* Observation of validation before Test Execution
* Comparison of specified and observed environmental conditions
* Testing with an environment that satisfies every mandatory criterion
* Testing with an unsatisfied Baseline or Configuration criterion
* Testing with an unsatisfied Test Input, time-source, or random-value criterion
* Testing with an unsatisfied ordering, resource, dependency, or communication criterion
* Inspection of validation outcomes, Evidence, and Traceability records
* Confirmation that each unsatisfied mandatory criterion produces an invalid outcome
===== Referenced By =====
{{backlinks>.}}
===== Related Architecture Sections =====
* Add links to the architecture sections governing environmental validation, deterministic execution, Test Definition, Test Execution, Evidence, and Traceability.
===== Delivery Phase =====
Assign the applicable delivery phase.
===== Requirement Status =====
Draft
===== Statement Reference =====
Use the following syntax to reference this requirement’s Statement section from another DokuWiki page:
{{section>dido:03-dido-te:99-annexes:annex-c-requirements:02-test-environment-requirements:env-004-provide-deterministic-test-environment:env-004l-validate-environmental-determinism#Statement&noheader&nofooter&noeditbtn}}
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