slcoverage.CodeSelector Class
Namespace: slcoverage
Select custom C or C++ code for coverage filter
Description
Use objects of the slcoverage.CodeSelector
class to specify custom
C or C++ code selection criteria for a filter rule.
The slcoverage.CodeSelector
class is a handle
class.
Creation
sel = slcoverage.CodeSelector(type,fileName)
creates
CodeSelector
object of the specified type
based
on the specified fileName
and sets the Type
and FileName
properties.
sel = slcoverage.CodeSelector(type,fileName,functionName)
creates
a CodeSelector
object based on the specified C or C++
functionName
in the file and sets the FunctionName
property.
Filtering all functions that contain call points of
another function does not automatically filter the callee function. You must manually
add the callee function to the filter file.
sel = slcoverage.CodeSelector(type,fileName,functionName,expr,exprIndex)
creates a CodeSelector
object for the specified expression and expression
index and sets the Expr
and ExprIndex
properties.
sel = slcoverage.CodeSelector(type,fileName,functionName,expr,exprIndex,outcomeIndex)
creates a CodeSelector
object based on the specified coverage outcome and
sets the OutcomeIndex
property.
sel = slcoverage.CodeSelector(type,fileName,functionName,expr,exprIndex,outcomeIndex,parentExprIndex)
creates a CodeSelector
object based on the specified coverage outcome
that belongs to an expression owned by parentExprIndex
and sets the
DecOrCondIndex
property
to parentExprIndex
.
Properties
Type
— Type of custom C or C++ code to select
slcoverage.CodeSelectorType
value
Type of custom C or C++ code to select, specified as an enumeration of the
slcoverage.CodeSelectorType
class:
slcoverage.CodeSelectorType.File
— A custom C or C++ code file name.slcoverage.CodeSelectorType.Function
— A custom C or C++ code function name.slcoverage.CodeSelectorType.Decision
— A custom C or C++ code decision.slcoverage.CodeSelectorType.Condition
— A custom C or C++ code condition.slcoverage.CodeSelectorType.DecisionOutcome
— A custom C or C++ code decision outcome.slcoverage.CodeSelectorType.ConditionOutcome
— A custom C or C++ code condition outcome.slcoverage.CodeSelectorType.MCDCOutcome
— A custom C or C++ code MCDC outcome.slcoverage.CodeSelectorType.RelationalBoundaryOutcome
— A custom C or C++ code relational boundary outcome.
Example: slcoverage.CodeSelectorType.Function
Attributes
SetAccess | protected |
Data Types: slcoverage.CodeSelectorType
FileName
— C or C++ file to select
character array | string array
C or C++ file to select, specified as a character array or string array.
Example: 'myfile.c'
Attributes
SetAccess | protected |
Data Types: char
| string
FunctionName
— C or C++ function to select
character array | string array
C or C++ function to select, specified as a character array or string array.
Example: 'counterbusFcn'
Attributes
SetAccess | protected |
Data Types: char
| string
Expr
— Decision or condition expression to select
character array | string array
Decision or condition expression to select, specified as a character array or string array.
Example: 'x | y'
Attributes
SetAccess | protected |
Data Types: char
| string
ExprIndex
— Expression index
integer
Expression index, specified as an integer. If you are filtering an outcome, this property is the index of the expression that owns that outcome. If you are filtering an expression, this property is the index of that expression inside the body of the function.
Example: 2
Attributes
SetAccess | protected |
Data Types: single
| double
| int
OutcomeIndex
— Index of outcome to select
integer
Index of outcome to select, specified as an integer:
For a Boolean expression, enter
1
for theF
outcome or2
for theT
outcome.For a switch/case statement, enter
1
for the first case,2
for the second case, and so on.For relational boundary
Integer type:
enter
1
for type-1
.enter
2
for type+1
.enter
3
for type0
.
Float type:
enter
1
for[-tol 0]
or[-tol 0)
.enter
2
for(0 tol]
or[0 tol]
is outcome2
For more information about relational boundary coverage, see Relational Boundary Coverage.
Example: 2
Attributes
SetAccess | protected |
Data Types: single
| double
| int
DecOrCondIndex
— Parent expression index
integer
Parent expression index, specified as an integer. Use this input when you are filtering an expression owned by a parent decision or condition. This property is the index of the parent decision or condition relative to the function.
Example: 2
Attributes
SetAccess | protected |
Data Types: single
| double
| int
ConstructorCode
— Code used to create this selector object
character array
Code used to create this selector object, returned as a character vector.
Attributes:
GetAccess | public |
SetAccess | protected |
Description
— Description of the selector
character vector
Description of the selector, returned as a character vector. Simulink® Coverage™ creates the description based on the selector.
Attributes:
GetAccess | public |
SetAccess | protected |
Id
— Model element identifier
Simulink ID (default) | property | handle
This property is empty for the slcoverage.CodeSelector
class.
Attributes
SetAccess | protected |
Data Types: char
| string
| handle
| integer
Methods
Public Methods
allSelectors | Selectors for model or code element |
Examples
Add Code Selector Rules to a Filter
This example shows how to select custom C or C++ code for which you want to add a filter rule.
Load the model.
modelName = 'slcovCCallerExample'; Simulink.importExternalCTypes('my_func.h','EnumClass','dynamic'); load_system(modelName)
Configure coverage settings using a Simulink.SimulationInput
object.
covSet = Simulink.SimulationInput(modelName); covSet = covSet.setModelParameter('CovEnable','on'); covSet = covSet.setModelParameter('CovMetricStructuralLevel','MCDC'); covSet = covSet.setModelParameter('CovSFcnEnable','on'); covSet = covSet.setModelParameter('CovSaveSingleToWorkspaceVar','on'); covSet = covSet.setModelParameter('CovSaveName','covData'); covSet = covSet.setModelParameter('SimAnalyzeCustomCode','on');
Simulate the model using covSet
object as the input.
simOut = sim(covSet); covData = simOut.covData;
Create a selector object to filter the custom C function timesK
.
sel = slcoverage.CodeSelector(slcoverage.CodeSelectorType.Function,... 'my_func.c', 'timesK');
Create a filter object and create a rule based on the selector, then add the rule to the filter.
filt = slcoverage.Filter; rule = slcoverage.FilterRule(sel,'Tested elsewhere',... slcoverage.FilterMode.Exclude); addRule(filt,rule); setFilterName(filt,'Code Filter')
Save the filter as codefilter
and add it to the cvdata
object for my_func.c
. Because the coverage data is stored in a cv.cvdatagroup
object, use the get
method to set the property.
save(filt,'codefilter'); covData.get('my_func.c').filter = 'codefilter';
Generate a coverage report.
cvhtml('codeCovReport',covData);
Review the report. Under Custom Code File(s), click my_func.c
and find the filter rule that you added under Objects Filtered from Coverage Analysis.
Create a C Code Outcome Selector
This example shows how to use an slcoverage.CodeSelector
object to filter a code outcome in a custom C or C++ program called by a C Caller block.
Open the Model and Enable Coverage Analysis
Open the model.
modelName = 'slcovCCallerExample'; Simulink.importExternalCTypes('my_func.h','EnumClass','dynamic'); load_system(modelName)
Configure coverage settings using a Simulink.SimulationInput
object.
covSet = Simulink.SimulationInput(modelName); covSet = covSet.setModelParameter('CovEnable','on'); covSet = covSet.setModelParameter('CovMetricStructuralLevel','ConditionDecision'); covSet = covSet.setModelParameter('CovSFcnEnable','on'); covSet = covSet.setModelParameter('CovSaveSingleToWorkspaceVar','on'); covSet = covSet.setModelParameter('CovSaveName','covData');
Simulate the model using covSet
as the input.
simOut = sim(covSet); covData = simOut.covData;
The simulation returns the coverage data as a cv.cvdatagroup
object when both the model and custom code are analyzed for coverage. To extract the code coverage data, use the get
method of the cvdatagroup
class.
codeCovData = get(covData,'my_func.c');
Justify the Missing Outcome
In this example, you justify the F
outcome of the inputGElower
condition in the (u1->limits.upper_saturation_limit >= limit) && inputGElower
decision, which is located inside the counterbusFcn
function in the my_func.c
source file.
Create a selector object using slcoverage.CodeSelector
. The first input is a CodeSelectorType
enumeration. To justify a condition outcome, use a ConditionOutcome
enumeration. The second input is the code source file, my_func.c
. The third input is the name of the function that contains the outcome, counterbusFcn
. The fourth input is the expression which contains the outcome, (u1->limits.upper_saturation_limit >= limit) && inputGElower
. The fifth input is the index of the expression that owns the outcome. In this case, inputGElower
is the second condition within its parent condition, so this input is 2
. The sixth input is the condition outcome index, which is 1
for the F
outcome of a Boolean expression. The seventh input is the index of the parent decision or condition, which is 1
for (u1->limits.upper_saturation_limit >= limit) && inputGElower
because it is the first decision in the function.
enum = slcoverage.CodeSelectorType.ConditionOutcome; sel = slcoverage.CodeSelector(enum,'my_func.c','counterbusFcn',... '(u1->limits.upper_saturation_limit >= limit) && inputGElower',2,1,1);
Create a Filter
object and a FilterRule
object and apply the rule to the filter.
filt = slcoverage.Filter;
rule = slcoverage.FilterRule(sel,'condition does not apply');
addRule(filt,rule);
Save the filter to a filter file and then apply the filter to the cvdata
object.
save(filt,'codeOutcomeFilter'); codeCovData.filter = 'codeOutcomeFilter';
Review the Coverage Report
Verify the outcome is filtered by generating a coverage report using cvhtml
.
cvhtml('filteredCodeCovReport',codeCovData);
Version History
Introduced in R2018bR2021a: Justify unsatisfied code coverage outcomes
You can use the new slcoverage.CodeSelectorType
enumerations to
justify code coverage outcomes without excluding the entire expression:
slcoverage.CodeSelectorType.DecisionOutcome
slcoverage.CodeSelectorType.ConditionOutcome
slcoverage.CodeSelectorType.MCDCOutcome
slcoverage.CodeSelectorType.RelationalBoundaryOutcome
When using the new slcoverage.CodeSelectorType
enumerations, use
these new properties as optional input arguments:
outcomeIndex
DecOrCondIndex
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