Simulink Test

Develop, manage, and execute simulation-based tests

Simulink Test™ provides tools for authoring, managing, and executing systematic, simulation-based tests of models, generated code, and simulated or physical hardware. It includes simulation, baseline, and equivalence test templates that let you perform functional, unit, regression, and back-to-back testing using software-in-the-loop (SIL), processor-in-the-loop (PIL), and real-time hardware-in-the-loop (HIL) modes.

With Simulink Test you can create nonintrusive test harnesses to isolate the component under test. You can define requirements-based assessments using a text-based language, and specify test input, expected outputs, and tolerances in a variety of formats, including Microsoft^® Excel^®. Simulink Test includes a Test Sequence block that lets you construct complex test sequences and assessments, and a test manager for managing and executing tests. Observer blocks let you access any signal in the design without changing the model or the model interface. Large sets of tests can be organized and executed in parallel or on continuous integration systems.

You can trace tests to requirements (with Requirements Toolbox™) and generate reports that include test coverage information from Simulink Coverage™.

Support for industry standards is available through IEC Certification Kit (for ISO 26262 and IEC 61508) and DO Qualification Kit (for DO-178 and DO-254).

What Is Simulink Test?

Graphic showing a system under test in the middle, list of inputs on the left , parameters at bottom and asssements on the right.

Author Requirements-Based, Back-to-Back, and Regression Tests

Use test templates to create simulation, baseline, and equivalence tests. Define test data with multiple formats: MAT-files, Excel spreadsheets, MATLAB^® code, graphically using Signal Editor blocks, programmatic test input sequences using the Test Sequence block, or automatically generate test inputs using Simulink Design Verifier™.

How to Perform Back-to-Back Testing in Simulink (2:14)

Documentation | Examples

Automate Testing with Continuous Integration

Increase throughput for large test suites, iterations, and large Simulink^® models by using parallel execution. Tests can be executed individually or in a batch to automate testing and set up a standardized testing environment. Run model tests using MATLAB Unit Test, enabling you to integrate within continuous integration (CI) systems such as Jenkins™.

Continuous Integration for Verification of Simulink Models Using GitLab

Documentation | Examples

Plots of signals from the results of testing in the Simulation Data Inspector

Execute Tests, View Results, and Debug

Execute and debug tests in normal simulation mode, accelerator mode, rapid accelerator model, software-in-the-loop (SIL) mode, processor-in-the-loop (PIL) mode, or real-time hardware-in-the-loop (HIL) real-time mode with Simulink Real-Time™.

Debug Baseline Test Failures Using Model Slicer (4:03)

Documentation | Examples

The Create Test Harness dialog for the component under test and the test harness with a test sequence block, test assessment block and the component under test

Isolate Components for Unit Testing

Test harnesses provide an integrated simulation environment that isolates the Simulink model or model component. Run test-specific simulations on models or model components while synchronizing design changes between the model and the test harness. With observers, debug and test Simulink signals without adding ports, blocks, connections, or interfaces that are only for testing.

Monitor Signals Without Adding Signal Lines with Observer Blocks (2:23)

Documentation | Examples

Test Sequence Editor shows columns with steps, transition and next steps for a sequence. Test harness with Test Sequence block is also visible.

Author Test Sequence and Assessments

Author tests and assess simulation results with step-based and temporal test sequences using a subset of MATLAB language features, including temporal operators, signal generators, and conditional constructs.

Documentation | Examples

Temporal Assessment editor in the Test Manager shows

Verify Temporal Requirements

Author tests with temporal assessments with precise semantics in a natural language format. These tests accurately model complex timing-dependent behavior with conditions, events, signal values, and delays.

Verify Requirements with Temporal Assessments in Simulink Test (6:26)

Documentation | Examples

Generate reports to document test results.

Generate Test Reports and Archive Test Results

Simulink Test displays a summary and details of tests that have been executed. To share the results with others, export test results to a file, which can be reviewed later in the test manager. Generate reports that include the test outcome, test summary, and any criteria used for test comparisons. These reports can be customized using Simulink Report Generator™.

Develop ISO 26262-Compliant ADAS Applications with Model-Based Design (4:22)

Documentation | Examples

Image of aggregated coverage section from test manager showing coverage with an arrow pointing to coverage report.

Measure Model and Code Coverage

Coverage metrics, such as decision, condition, modified condition/decision coverage (MC/DC), and relational boundary coverage, can be collected with Simulink Coverage™. From the coverage results in the test manager, generate test cases for missing coverage by using Simulink Design Verifier.

What Is Simulink Coverage? (1:50)

Documentation | Examples

Graphic shows box for Test Manager on left with option to setup test with different releases. An arrow from this box shows a flow where multiple releases are spawned for the test and then the tests results flow back to the Test Manager.

Run Test Cases Using Multiple MATLAB Releases

Run test cases using multiple MATLAB releases, starting with R2011b, which enables you to execute your model in its production version but use the latest verification features of Simulink Test.

Documentation | Examples

Product Resources:

Documentation Examples Videos User Stories Technical Articles Requirements Release notes

LG Electronics inverter for electrical and hybrid electric vehicles.

“Model-Based Design helped us apply the design and verification methods required by ISO 26262, including back-to-back verification and test coverage assessment. In particular, the automated test cases and reports in Simulink Test contributed significantly to reduced testing efforts.”
Jeongwon Sohn, LG Electronics