Model Testing Metrics

R2026b

The Model Testing Dashboard collects metric data from the model design and testing artifacts in a project, such as requirements, models, and test results. Use the metric data to assess the status and quality of your model testing. Each metric in the dashboard measures a different aspect of the quality of the testing of your model and reflects guidelines in industry-recognized software development standards, such as ISO 26262 and DO-178. You can collect these metrics programmatically by using the metric.Engine API.

Use these tables to explore the model testing metrics, view their metric IDs, and access information about each metric.

The model testing metrics cover these areas:

To collect available model testing metrics programmatically, use the getAvailableMetricIds and execute functions.

metricEngine = metric.Engine;
modelTestingMetricIds = getAvailableMetricIds(metricEngine,App="DashboardApp",Dashboard="ModelUnitTesting");
results = execute(metricEngine,modelTestingMetricIds)

For more information, see Collect Metrics on Model Testing Artifacts Programmatically.

If your scripts reference metric IDs from R2026a or earlier, see Migrate from Earlier Metrics.

Model Testing

Assess the traceability between requirements and tests and learn more about the types of tests for a unit by using the test analysis metrics.

Requirements Linked to Tests

Assess requirements traceability by analyzing how requirements are linked to tests and identifying requirements that might be over-tested or under-tested.

Metric	Metric ID
Tests Per Requirement Distribution	`modeltesting.TestAnalysis[slcomp.TestsPerRequirementDistribution]`
Tests Per Requirement Ratio	`modeltesting.TestAnalysis[slcomp.TestsPerRequirementRatio]`
Tests Per Requirement Distribution Details	`modeltesting.TestAnalysis[slcomp.TestsPerRequirementDistributionDetails]`

Tests Linked to Requirements

Assess test traceability by analyzing how tests are linked to requirements and identifying tests with limited or broad requirement coverage.

Metric	Metric ID
Requirements Per Test Ratio	`modeltesting.TestAnalysis[slcomp.RequirementsPerTestRatio]`
Requirements Per Test Distribution	`modeltesting.TestAnalysis[slcomp.RequirementsPerTestDistribution]`
Requirements Per Test Distribution Details	`modeltesting.TestAnalysis[slcomp.RequirementsPerTestDistributionDetails]`

Test Information

Analyze the composition of the test suite by examining test types, tags, and detailed test information.

Metric	Metric ID
Component Tests	`modeltesting.TestAnalysis[slcomp.ComponentTests]`
Independent Tests	`modeltesting.TestAnalysis[slcomp.IndependentTests]`
Test Breakdown Details	`modeltesting.TestAnalysis[slcomp.TestBreakdownDetails]`
Test Type Distribution	`modeltesting.TestAnalysis[slcomp.TestTypeDistribution]`
Test Tag Distribution	`modeltesting.TestAnalysis[slcomp.TestTagDistribution]`

Model Testing Results

Assess the status of model test results for a unit by using the result analysis metrics.

Status of Model Tests

Evaluate the status of model test results by examining test outcome distributions and detailed test results.

Metric	Metric ID
Test Status Distribution	`modeltesting.TestResultAnalysis[slcomp.TestStatusDistribution]`
Test Status Distribution Details	`modeltesting.TestResultAnalysis[slcomp.TestStatusDistributionDetails]`

Model Coverage

Evaluate how thoroughly testing exercises your models by reviewing aggregated coverage results and model coverage details.

Metric	Metric ID
Model Coverage Breakdown	`slcomp.mt.CoverageBreakdown`
Model Coverage Fragment	`slcomp.mt.CoverageFragment`

Requirements-Based Tests

Determine how much of the achieved coverage comes from requirements-based tests.

Metric	Metric ID
Requirements-Based Coverage Ratio	`modeltesting.RequirementsBasedCoverage[slcomp.CoverageRatio]`
Requirements-Based Coverage Fragments	`modeltesting.RequirementsBasedCoverage[slcomp.CoverageFragments]`

Unit-Boundary Tests

Determine how much of the achieved coverage comes from unit-boundary tests.

Metric	Metric ID
Component Boundary Coverage Ratio	`modeltesting.ComponentBoundaryCoverage[slcomp.CoverageRatio]`
Component Boundary Coverage Fragments	`modeltesting.ComponentBoundaryCoverage[slcomp.CoverageFragments]`

Migrate from Earlier Metrics

Since R2026b

Starting in R2026b, the model testing metrics use a different naming convention and can return results in improved table-based formats. If you have scripts that call earlier metric IDs, use the tables in this section to identify the replacement metrics. The new coverage metrics consolidate per-coverage-type metrics into single metrics that return all coverage types (execution, decision, condition, MC/DC) in one result.

To collect all metrics in a group at once, use the group name with empty brackets. For example:

metric_engine = metric.Engine;
results = execute(metric_engine,"modeltesting.TestAnalysis[]")

Migrate Test Analysis Metrics

Earlier Metric ID	Replacement Metric ID
`slcomp.mt.ComponentTests`	`modeltesting.TestAnalysis[slcomp.ComponentTests]`
`slcomp.mt.IndependentTests`	`modeltesting.TestAnalysis[slcomp.IndependentTests]`
`slcomp.mt.TestCaseInfo`	`modeltesting.TestAnalysis[slcomp.TestBreakdownDetails]`
`slcomp.mt.TestCaseTypeDistribution`	`modeltesting.TestAnalysis[slcomp.TestTypeDistribution]`
`slcomp.mt.TestCaseTagDistribution`	`modeltesting.TestAnalysis[slcomp.TestTagDistribution]`
`slcomp.mt.TestCaseWithRequirementDistribution`	`modeltesting.TestAnalysis[slcomp.RequirementsPerTestRatio]`
`slcomp.mt.RequirementsPerTestCase`	`modeltesting.TestAnalysis[slcomp.RequirementsPerTestDistributionDetails]`
`slcomp.mt.RequirementsPerTestCaseDistribution`	`modeltesting.TestAnalysis[slcomp.RequirementsPerTestDistribution]`
`slcomp.mt.RequirementWithTestCaseDistribution`	`modeltesting.TestAnalysis[slcomp.TestsPerRequirementRatio]`
`slcomp.mt.ComponentRequirements`
`slcomp.mt.TestCasesPerRequirement`	`modeltesting.TestAnalysis[slcomp.TestsPerRequirementDistributionDetails]`
`slcomp.mt.TestCasesPerRequirementDistribution`	`modeltesting.TestAnalysis[slcomp.TestsPerRequirementDistribution]`

Migrate Test Result Metrics

Earlier Metric ID	Replacement Metric ID
`slcomp.mt.TestStatus`	`modeltesting.TestResultAnalysis[slcomp.TestStatusDistribution]`
`slcomp.mt.TestStatusDistribution`	`modeltesting.TestResultAnalysis[slcomp.TestStatusDistributionDetails]`

Migrate Requirements-Based Coverage Metrics

Earlier Metric ID	Replacement Metric ID
`slcomp.mt.RequirementsExecutionCoverageBreakdown`	`modeltesting.RequirementsBasedCoverage[slcomp.CoverageRatio]`
`slcomp.mt.RequirementsDecisionCoverageBreakdown`
`slcomp.mt.RequirementsConditionCoverageBreakdown`
`slcomp.mt.RequirementsMCDCCoverageBreakdown`
`slcomp.mt.RequirementsExecutionCoverageFragment`	`modeltesting.RequirementsBasedCoverage[slcomp.CoverageFragments]`
`slcomp.mt.RequirementsDecisionCoverageFragment`
`slcomp.mt.RequirementsConditionCoverageFragment`
`slcomp.mt.RequirementsMCDCCoverageFragment`

Migrate Unit-Boundary Coverage Metrics

Earlier Metric ID	Replacement Metric ID
`slcomp.mt.UnitBoundaryExecutionCoverageBreakdown`	`modeltesting.ComponentBoundaryCoverage[slcomp.CoverageRatio]`
`slcomp.mt.UnitBoundaryDecisionCoverageBreakdown`
`slcomp.mt.UnitBoundaryConditionCoverageBreakdown`
`slcomp.mt.UnitBoundaryMCDCCoverageBreakdown`
`slcomp.mt.UnitBoundaryExecutionCoverageFragment`	`modeltesting.ComponentBoundaryCoverage[slcomp.CoverageFragments]`
`slcomp.mt.UnitBoundaryDecisionCoverageFragment`
`slcomp.mt.UnitBoundaryConditionCoverageFragment`
`slcomp.mt.UnitBoundaryMCDCCoverageFragment`