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decisioninfo - Display decision coverage information for model object

Syntax

coverage = decisioninfo(cvdo, object) coverage = decisioninfo(cvdo, object, ignore_descendants) [coverage, description] = decisioninfo(cvdo, object)

Description

coverage = decisioninfo(cvdo, object) returns decision coverage results from the cvdata object cvdo for the model component specified by object.

coverage = decisioninfo(cvdo, object, ignore_descendants) returns decision coverage results for object, depending on the value of ignore_descendants.

[coverage, description] = decisioninfo(cvdo, object) returns decision coverage results and text descriptions of decision points associated with object.

Inputs

cvdo

cvdata object

ignore_descendants

Specifies to ignore the coverage of descendant objects if ignore_descendants is set to 1.

object

The object argument specifies an object in the model or Stateflow chart that received decision coverage. Valid values for object include the following:

Object Specification Description

BlockPath
Full path to a model or block

BlockHandle
Handle to a model or block

slObj
Handle to a Simulink API object

sfID
Stateflow ID

sfObj
Handle to a Stateflow API object

{BlockPath, sfID}
Cell array with the path to a Stateflow chart and the ID of an object contained in that chart

{BlockPath, sfObj}
Cell array with the path to a Stateflow chart and a Stateflow object API handle contained in that chart

[BlockHandle, sfID]
Array with a Stateflow chart handle and the ID of an object contained in that chart

Outputs

coverage

The value of coverage is a two-element vector of the form [covered_outcomes total_outcomes].coverage is empty if cvdo does not contain decision coverage results for object. The two elements are:

covered_outcomes Number of decision outcomes satisfied for object

total_outcomes Number of decision outcomes for object

description

description is a structure array containing the following fields:

decision.text String describing a decision point, e.g., 'U > LL'

decision.outcome.text String describing a decision outcome, i.e., 'true' or 'false'

decision.outcome. executionCount Number of times a decision outcome occurred in a simulation

Examples

Open the slvnvdemo_cv_small_controller model and create the test specification object testObj. Enable decision coverage for testObjand execute testObj using cvsim. Use decisioninfo to retrieve the decision coverage results for the Saturation block and determine the percentage of decision outcomes covered:

mdl = 'slvnvdemo_cv_small_controller';
open_system(mdl)
testObj = cvtest(mdl)
testObj.settings.decision = 1;
data = cvsim(testObj)
blk_handle = get_param([mdl, '/Saturation'], 'Handle');
cov = decisioninfo(data, blk_handle)
percent_cov = 100 * cov(1) / cov(2)

Alternatives

To collect and display decision coverage results:

Open the model.
In the Model Editor, select Tools > Coverage Settings.
On the Coverage tab, under Coverage Metrics, select Decision Coverage.
Click OK to close the Coverage Settings dialog box.
Simulate the model and review the results.