Razorcat Development GmbH

TESSY automates the entire test cycle including regression tests for embedded software in C / C++. TESSY is a test tool for creating, automatically executing and evaluating unit and integration test cases. The test data can be defined or imported into TESSY using various editors. The test environment is created automatically by TESSY. Tests are executed on the target system, with instruction set simulators or on the PC. Different cross compilers or the integrated GNU/x86 compiler can be used. TESSY supports all leading compilers, debuggers and microcontrollers.

TESSY is certified for the development of safety-relevant software according to IEC 61508, IEC 62304, ISO 26262 and EN 50128 and is used for safety-critical applications in the automotive, railway, aerospace, mechanical and medical engineering industries.

For the analysis of code coverage, TESSY provides up to 8 different coverage measurement methods, whose measurement results are automatically analyzed and visually displayed. The most recent measurement method is the Call Pair Coverage (CPC) measurement, which checks whether all call points of functions or methods within the test object have been executed at least once.

TESSY has an integrated requirements management with which it is possible to create requirements or to import and export requirements in different formats for requirements tools, such as the RegIF format. Requirements can be managed and linked to test cases. All documents are generated automatically and can be used directly for certifications or assessments.

A scenario editor specially developed for the integration test can be used to test the interaction of different functions and modules temporally.

The new TESSY version 4.2 offers many high-quality new functions and enhancements. The CTE has been enhanced with an automatic generation of the classification tree, where equivalence classes are automatically linked to values. A cross-project interface dictionary also offers the possibility to assign the appropriate specification names to the implementation variables, which can then be used in all CTE test specifications.

Another new feature is the expansion of the scenario editor, which now supports software components with C++ source code. The necessary objects for calling the handler functions and stimulated methods are created as synthetic variables within the test interface.

Reliably quantifying the time required for testing is an important task in software testing projects. TESSY 4.2 offers a new test effort estimation based on the available metrics of the tool. Other new metrics, such as the number of statements and calls and the nesting depth, can also be used within a customizable time estimation formula. When a module is analyzed, the estimated time is updated according to the formula.

A new task element in TESSY 4.2 offers the possibility to log external tests and reviews and link them to requirements. This allows the complete coverage of requirements that cannot be tested with a normal unit or integration test. The test result of each task - passed or failed - is stored together with PDF or image files for the documentation of the review process. The result of an item counts as one completed test for all associated requirements, allowing full coverage to be achieved using external tests or reviews.

The classification tree editor - CTE - is used for the systematic development of test cases according to the classification tree method. The classification tree method is an intuitive and systematic method for transforming a (functional) specification into a number of test cases.

The CTE is fully integrated in TESSY, so that test cases created with the CTE can be executed immediately. In the test result reports generated by TESSY, the classification tree is included as a graphic. The development of unit, integration, or system tests is greatly facilitated with TESSY and the CTE.

With TESSY version 4.1, the CTE has been redesigned as an Eclipse-based editor and enhanced with new functionalities, which improves the design of test cases and the assignment of test data to tree nodes: Dependencies can be defined which automatically remove and add class markers for each test case. Test cases can be generated automatically for its classes or for the entire classification tree based on the classification selected in the tree. Colors can be defined individually for each CTE object and the design of the classification tree can be predefined using CSS style sheets, which makes working in a test team easier.

In the current TESSY version 4.2, the CTE has been extended with an automatic generation of the classification tree. This generator simplifies test design by generating a suitable tree based on the interface of a test object. For each input variable a classification with the possible values is generated as classes according to the equivalence class method and directly linked to the values of the implementation variables and functions. A cross-project Interface Dictionary also allows you to assign the appropriate specification names to the implementation variables, which can then be used in all CTE test specifications. When the interface is changed, the Interface Dictionary entries are synchronized and the corresponding CTE classifications are automatically updated.

The classification tree method addresses the aspect of model-based testing and meets the test requirements of the standards for safety-critical software developments. The CTE is ideal for black box testing based solely on the specification of the software under test. Independent of TESSY, the CTE is also available as a single-user version.

The test platform Integrated Test Environment - ITE - enables project managers and test engineers an easy access to all requirements, test cases and results for the certification of safety critical systems.

In ITE requirements can be defined or imported and exported using various formats. The standard format for requirements exchange (ReqIF) is supported as well as special interfaces of requirement tools like the IBM Rational DOORS.

Requirements-based tests can be developed, executed and evaluated. It is possible to create the test cases separately or within test campaigns and to link them with corresponding requirements and then to execute them either automatically or manually.

ITE provides an optimal overview on the whole test process at any time. Therefore it is easy to manage complex software and hardware test projects in all test phases. The test evaluation is simplified, because the test results and the test procedures are graphically displayed and the documentation is automated.

ITE is optimized for large test teams in client-server environments. With a powerful programmable search feature covering the entire content of the system it is easy to define your own test metrics for requirements, test cases and test results. The documents generated by ITE can directly be used for certifications and assessments. A powerful change management and the ability to manage test equipment significantly facilitate the validation phase of software projects.

The latest ITE version 2.1 has been enhanced by the management of test incidents: Test incidents can be created and managed. The test incidents can be linked to requirement, test cases, test runs and test equipment. The incident elements attributes are flexibly configurable and integrated via reports and the search function of ITE. For more information please visit us at our booth.

With the test specification language Check Case Definition Language – CCDL - you can define test cases at the system level in a well-readable language and link test cases to requirements. This reduces the high effort to program and to document system tests manually and the tests can be created faster.

Due to open interfaces, system tests which are defined with CCDL can be executed on test benches or within a simulation. CCDL is already an integrated part of ITE.

In the development environment of CCDL the tests are created and compiled for the implementation automatically into an executable test control program. The system tests can be executed either in a simulation or due to open interfaces as real-time process on customer specific test benches and on third-party test benches like the Middleware Platform Gamma from RST Automation.

CCDL is applicable for black box system testing with input and output interfaces which are used for stimulation and checking of expected system reactions.

CCDL automatically executes, evaluates and visualizes each test run and reports the behavior of the system under test which eases the creation of sophisticated test scenarios for efficient and in-depth testing.

It is possible to integrate CCDL in custom test management systems or in third-party management systems. CCDL is already included in our test platform ITE. For more information please visit us at our booth.

Razorcat has been developing test tools for more than 20 years. The portfolio covers the entire verification path of development processes. Take advantage of our long term experience in many safety-critical software testing projects.

Our expert team will advise you in all phases of the test process, and trains you specifically in seminars. We plan, manage, create and execute standard-conforming unit- / module tests, integration tests, and system tests according to your requirements.

As an independent and neutral test team, we ensure the compliance of standards and the application of appropriate test methods for the creation of the tests. Our documentation can be directly used for assessments and certifications.

Our testing services includes:

- Test management and customized process integration

- Developing and creating test plans and test strategies

- Set up of test environments

- Efficient test implementation by qualified test engineers

- Linking requirements and test cases

- Executing test cases with automated test tools like TESSY

- Regular reports of the test status and test results

- Code reviews and test case reviews

- Providing of the configuration, the test environment and test data

- Test result reports and test coverage reports

- On-side installation

- Training and coaching

For more information please visit us at our booth.