User`s guide

Coverage Filter Rules and Files
20-3
Coverage Filter Rules and Files
In this section...
“What Is a Coverage Filter Rule?” on page 20-3
“What Is a Coverage Filter File?” on page 20-3
What Is a Coverage Filter Rule?
A coverage filter rule is a rule that specifies a model object or set of objects to exclude
from coverage recording:
Each coverage filter rule includes the following fields:
• Name—Name or path of the object to be filtered from coverage
• Type—Whether a specific object is filtered or all objects of a given type are filtered
• Rationale—An optional description that explains why this object is filtered from
coverage
What Is a Coverage Filter File?
A coverage filter file is a collection of coverage filter rules. Each rule specifies one or more
objects to exclude from coverage recording.
To apply the coverage filter rules during coverage recording, you must first attach a
coverage filter file to your model. After you attach the coverage filter file, when you
simulate the model, the specified objects are excluded from coverage. You can attach
a coverage filter file to several Simulink models. However, a model can have only one
attached coverage filter file.
MATLAB saves coverage filter files in the MATLAB Current Folder, unless
you specify a different folder. The default name for a coverage filter file is
<model_name>_covfilter.cvf.
If you use the default file name and the coverage filter file exists on the MATLAB path,
each time you open the model, you see the coverage filter rules, unless another coverage
filter file is already attached to that model.