9 tips for better code coverage measurement

Measuring code coverage is increasingly important for embedded systems but requires some experience. This is because there are a few hurdles to overcome, especially with small targets. However, with the right approaches and suitable tools, measuring test coverage is possible without excessive effort. Nine practical tips help you get started.
Measuring test coverage, also known as code coverage, is becoming increasingly important for embedded systems. In many cases, these devices are critical to safety or business. Processes are based on IoT devices, patients rely on working pacemakers and intelligent insulin pumps, automotive and aviation is no longer conceivable without embedded software. This list could be continued almost endlessly.
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Measuring code coverage for embedded software

For a long time already, embedded software has been used for critical applications where safety is highly important. As embedded devices are often clients that are connected with other devices on the Internet of Things (IoT), security aspects need to be considered as well. This means that the quality of embedded devices is extremely important – both from a security point of view and from a functional safety point of view.
For safe and reliable embedded devices, testing is an indispensable part of quality assurance. It is not without reason that the standards for safety-critical software development set precise requirements for test methods and test coverage.
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Software quality demands both static code analysis and dynamic testing

Increased recall campaigns, delayed deliveries, difficulties in delivering the promised functions on time: software quality is not evident. The development of good software is only possible through consistent action, adherence to standards and the use of mature test and quality assurance tools. Bad software leads to monetary losses and deterioration of the corporate image. Embedded software is even more critical, as it is mostly used in safety-critical applications. Here, software errors can endanger human lives and must therefore be avoided at all costs. For this reason, standards like ISO 26262, IEC 61508 or DO178-C have strict requirements regarding the quality of development and testing of software.
By Royd Lüdtke, 16 November 2021     Read the entire article here.

10 criteria for selecting a code coverage tool

Particularly in safety-critical software development, industry standards prescribe precise requirements for code coverage, so that products cannot be certified here without proof of sufficient test coverage. But also in other development projects, companies increasingly attach great importance to software quality and measure code coverage.
Various code coverage analyzers are available on the market for measuring code coverage. They differ significantly in terms of handling and quality.
By Klaus Lambertz, 9 September 2021     Read the entire article here.

Code Coverage on Embedded Devices

Software for embedded devices requires broad testing before the concerning products reach market maturity. Especially when it comes to safety critical environments, proof of testing is required by various certifications and safety standards such as IEC 61508.
However, in most cases code coverage faces the constraints of limited storage capacity of the targets and CPU performance. Thus, it is vital to choose the right approach in order to facilitate monitoring code coverage analysis on embedded systems.
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Testwell CTC++ Code Coverage Analyzer: Customer Testimonial from medical industry

... ISD chose Testwell CTC++ Code Coverage Analyzer, a product of Verifysoft to support them in the verification. Being a typical bare metal embedded system without a file system, counters are needed to store information and later download from the target to source. One of the biggest challenges is the limited memory in the systems of ISD. Testwell CTC++ requires a very small footprint for its instrumentation and the Host target add-on makes integrations to any system very easy. ... There are no restrictions with compilers, IDEs or debug tools. ... Embedded-Computing.com, 12 May 2017

Guaranteeing proper software behavior is a challenge: New Testwell CTC++ customer testimonial

“Our reputation is built on products which work properly” says Kees Valkhof, Lely’s Configuration Manager, who has given us an insight into the software testing demands for agricultural solutions and explained why they are using Testwell CTC++ for measuring code coverage...
Professional Tester, October 2016

Beijing Siener Electronics Tech. Development Ltd. Becomes Distributor for Testwell-Tools in China

Verifysoft, vendor of the leading Code Coverage Analyzer Testwell CTC++ and the software testing and analysis tools Testwell CTA++, CMT++, and CMTJava announced the appointment of Beijing Siener Electronics Tech. Development Ltd. as its distributor in China.
Beijing Siener, a privately held company with headquarters in Beijing/China with offices in Shanghai/China, represents already companies like HighTec EDV-Systeme GmbH, pls Development Tools, and GLIWA GmbH in the fast growing Chineese market.
Professional Tester, February 2016

Verifysoft announces new version 8.0 of Testwell CTC++ Code Coverage Analyzer

Verifysoft Technology announces the release of version 8.0 of its flagship tool Testwell CTC++ Code Coverage Analyzer.
New major features of Testwell CTC++ 8.0 include improved the overall architecture of the HTML form coverage report, introduced "line coverage" in the HTML report, introduced "annotations", improved reporting of header files, improved merging of coverage data of independently tested code files...
Professional Tester, 31 December 2015

Software certification: Qualification kit for Testwell CTC++

Verifysoft Technology presents a qualification kit for the Code Coverage Analyzer Testwell CTC++, covering the safety standards DO-178C, EN 50128, IEC 61508, and ISO 26262. The qualification kit simplifies the certification of embedded software, which has been analysed with Testwell CTC++. This Code Coverage Analyzer shows all coverage levels up to MC/DC Coverage and Modified Condition Coverage. Testwell CTC++ works with all compilers and all - even the smallest - embedded targets and microcontrollers.
The Official Daily 2014, 25 February 2014

Testwell CTC++: Code Coverage Analysis for safety-critical Embedded Systems

Software for embedded systems is often used in safety-critical systems. In this area malfunctions could lead to accidents or damages of high magnitude and even to loss of lives. Therefore, safety standards such as the DO178-C (aviation), the ISO 26262 (automotive) or the EN 50128 (railway) demand harsh proof of code coverage. In dependency to the criticality, a suitable level of code coveage has to be applied.
DSP Valley Newsletter 5/2013 (November 2013)

How good are your software tests?

Testwell CTC++ Code Coverage Analyzer will show you
Test coverage is used to evaluate the completeness of software tests. There are many standards which require test coverage measurements. ISO 26262 Road Vehicules Functional Safety requires according to the Safety Integrity Level statement coverage, branch coverage or MC/DC (Modified Condition/Decision Coverage). The aeronautics standard DO178-B requires test coverage up to MC/DC coverage. Coverage analysis is also widely used in healthcare industry and companies which are aware of higher software quality. ...

DSP Valley Newsletter 1/2012