Process Automation for Simulink Test

A model testing process for testing Simulink® Models

Overview

Process Automation for Simulink Test is an interactive add-on for the Process Advisor app that streamlines and automates verification and validation of Simulink models within Model-Based Design workflows.

The add-on provides a model testing process to streamline the interactive, cross-product workflow of testing a Simulink® model using Simulink® Test™, Simulink® Coverage™, Requirements Toolbox™, and Embedded Coder™. You can use and tailor this workflow to meet your coverage goals, perform back-to-back testing, or help comply with standards such as ISO 26262, DO-178, and ASPICE. This process model leverages the new interactive tasks, assessments, and task guidance introduced in the CI Support Package for Simulink® to guide you through the testing process.

Key Capabilities

• Automated Task Execution: Systematically execute predefined tasks to assess units and components
• Requirements-Based Testing: Verify requirement-to-test traceability and identifies coverage gaps
• Normal and SIL Mode Assessment: Run tests in both Normal and Software-in-the-Loop modes to verify behavior and collect aggregate coverage data
• Translation Validation: Perform back-to-back testing to compare model behavior against generated code
• Interactive Issue Resolution: Create test files, link tests to requirements, create tests for requirements, and resolve coverage gaps directly within the interface
• Customization: Modify the testing process by editing `addProcess.m` to add or remove tasks and to adjust assessment goals

Workflow Subprocesses

1. Setup: Define models as Units or Integration Components and specify architecture categories
2. Test Authoring: Create test files, configure simulation settings, create tests for requirements, and link tests to requirements
3. Model Testing: Execute requirements-based tests in Normal mode. Resolve test failures and coverage gaps to check design compliance
4. SIL Testing: Generate code with Embedded Coder and execute tests in SIL mode. Resolve test failures and coverage gaps to check design compliance
5. Back-to-Back Testing: Compare outputs between Normal and SIL results to validate translation

Benefits

• Safety Standard Compliance: Assists in fulfilling objectives for ISO 26262, IEC 61508, DO-178C, and EN 50128
• Efficiency: Streamlines identification of unintended functionality before deployment
• Traceability: Maintains one-to-one mapping between units, test files, and requirements

Requirements

MATLAB Version: R2024a - R2025b

Required Products:

• CI Support Package for Simulink - Process Advisor app. Install the support package from the Add-On Explorer.
• Simulink Check™ - Required to install the CI Support Package for Simulink.
• Simulink Test - Author and execute tests and collect assessment information. Open the Model Testing Process by using Simulink Test Manager.
• Embedded Coder® - Generate code prior to executing tests.
• Requirements Toolbox™ - Author and view requirements.
• Simulink Coverage™ - Assess model and code coverage.

Limitations

• Static model and code analysis, PIL, and HIL testing are not covered
• Workflow applies only to models with interface type specified as "Unit"