Documentation

decisioninfo

Retrieve decision coverage information from cvdata object

Syntax

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

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.

Input Arguments

cvdo

cvdata object

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 SpecificationDescription

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 from a singly instantiated Stateflow chart

{BlockPath, sfID}

Cell array with the path to a Stateflow chart or atomic subchart and the ID of an object contained in that chart or subchart

{BlockPath, sfObj}

Cell array with the path to a Stateflow chart or subchart and a Stateflow object API handle contained in that chart or subchart

{BlockHandle, sfID}

Cell array with a handle to a Stateflow chart or atomic subchart and the ID of an object contained in that chart or subchart

When specifying an S-function block, valid values for object include the following:

Object SpecificationDescription

{BlockPath, fName}

Cell array with the path to an S-Function block and the name of a source file.

{BlockHandle, fName}

Cell array with an S-Function block handle and the name of a source file.

{BlockPath, fName, funName}

Cell array with the path to an S-Function block, the name of a source file, and a function name.

{BlockHandle, fName, funName}

Cell array with an S-Function block handle, the name of a source file an a function name.

For coverage data collected during Software-in-the-Loop (SIL) mode or Processor-in-the-Loop (PIL) simulation mode, valid values for object include the following:

Object SpecificationDescription

{fileName, funName}

Cell array with the name of a source file and a function name.

{Model, fileName}

Cell array with a model name (or model handle) and the name of a source file.

{Model, fileName, funName}

Cell array with a model name (or model handle), the name of a source file, and a function name.

mode

The mode argument specifies the simulation mode for coverage. Valid values for mode include the following:

Object SpecificationDescription

'Normal'

Model in Normal simulation mode.

'SIL' (or 'PIL')

Model in Software-in-the-Loop (SIL) or Processor-in-the-Loop (PIL) simulation mode.

'ModelRefSIL' (or 'ModelRefPIL')

Model reference in Software-in-the-Loop (SIL) or Processor-in-the-Loop (PIL) simulation mode.

'ModelRefTopSIL' (or 'ModelRefTopPIL')

Model reference in Software-in-the-Loop (SIL or Processor-in-the-Loop (PIL) simulation mode with code interface set to top model.

ignore_descendants

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

Output Arguments

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_outcomesNumber of decision outcomes satisfied for object
total_outcomesNumber of decision outcomes for object

description

description is a structure array containing the following fields:

decision.textString describing a decision point, e.g., 'U > LL'
decision.outcome.textString 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 slvnvdemo_cv_small_controller and 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

Use the coverage settings to collect and display decision coverage results:

  1. Open the model.

  2. In the Model Editor, select Analysis > Coverage > Settings.

  3. On the Coverage pane of the Configuration Parameters dialog box, select Enable coverage analysis.

  4. Under Coverage metrics, select Decision as the structural coverage level.

  5. On the Coverage > Resultspane, specify the output you need.

  6. Click OK to close the Configuration Parameters dialog box and save your changes.

  7. Simulate the model and review the results.

Introduced in R2006b

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