Solutions for Embedded Systems & Software Engineering

We help embedded engineering teams

to build better embedded software

with the right tools, expert guidance ...

and trusted support

🔴 Automated Software Testing

Validate your Software against Real-World Requirements

Automated Testing with TESSY enables the systematic and automated verification of embedded software. Developers define test cases based on requirements, configure the test environment, and automatically execute unit, component, and regression tests. Code coverage analysis shows which parts of the software have actually been exercised by the tests. Automatically generated test reports provide traceability and documented evidence for quality assurance and functional safety processes.

A Typical Embedded Software Testing Workflow

1️⃣

Define the test object

Select the functions or software modules to be tested
Analyze the source code and dependencies
Identify interfaces, input, and output parameters
Specify the test environment and target platform

2️⃣

Specify test cases

Derive test cases from the software requirements
Define input values and expected results
Consider normal, boundary, and error cases
Manage test data in a structured manner

3️⃣

Prepare the test environment

Generate required drivers and test harnesses
Handle dependencies on other software modules
Replace unavailable functions or hardware with stubs
Configure the compiler and target environment

4️⃣

Run tests automatically

Automatically compile and execute test cases
Run tests on the host or target
Automatically compare actual results with expected results
Immediately identify failed tests

5️⃣

Measure code coverage

Determine which parts of the code were executed by tests
Analyze statement, branch, and other coverage criteria
Identify untested code areas
Demonstrate the required coverage levels for safety-related development processes

6️⃣

Analyze errors and improve tests

Investigate failed test cases
Distinguish between code errors and test errors
Supplement or adapt test cases
Re-run tests after code changes

7️⃣

Automate regression tests

Re-run existing tests after every relevant software change
Detect the impact of changes early
Integrate tests into automated build and CI processes
Continuously verify that software changes do not introduce regressions

8️⃣

Document test results

Document test results and coverage
Automatically generate test reports
Traceably link requirements, test cases, and results
Provide evidence for reviews, audits, and safety processes

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Update: August 30th, 2026