I might be missing something here but, the way you wrote the code in your question, conditions A and B are completely independent of each other. You therefore won’t cover all of the code unless you test both conditionals. In MCDC each condition should be evaluated at least once which affects the decision outcome independently.

The study identified various forms of prolonged transmission time as the most promising coverage enhancement techniques. The fact that many of the IoT applications of interest have very relaxed requirements on data rates and latency can be exploited to enhance the coverage through repetition or retransmission techniques. The study concluded that 20dB coverage enhancement can be achieved using the identified techniques. The EC-PDTCH/U peak physical layer data rate for a GMSK only device is limited to 153.6kbps over the 20ms TTI. However, this set of tests does not satisfy branch coverage since neither case will meet the if condition.

Coverage criteria

Test automation is the key for assuring working software, frequent delivery, sustainable development, and a constant pace. Only a few investigate non-functional testing such as performance testing, load testing, and usability testing. It is considered another important scenario for mMTC communication, that is over-the-air firmware update. Given the presence of many devices per cell, a simple unicast update of the firmware generates a considerable amount of traffic which should be processed properly in order to avoid network saturation. In this work the transmission of one MBytes of firmware data is required in presence of normal application traffic. The performance using unicast transmission is compared to the one using Single Cell Point-to-Multipoint (SC-PTM), a feature introduced in Rel-14 of NB-IoT standard to enable multicast communication.

Some of the most basic are the percentage of program subroutines and the percentage of program statements called during execution of the test suite. The first group of tools multiple condition coverage is used to generate test cases from models. Since test cases are the most important artifact in software testing, also the editing of such based on test models is important.

Code coverage

A test coverage criteria which requires enough test cases such that all possible combinations of conditions outcomes in each decision, and all points of entry, are invoked at least once. Contrast with branch coverage, condition, decision coverage, path coverage, path coverage, statement coverage. C1 stands for statement coverage and C2 for branch or condition coverage. With a combination of C1 and C2, it is possible to cover most statements in a code base.

] is an open-source tool based on extended finite-state machines specialized for testing the APIs of software. A Scala-based domain-specific language is used to create the models with features for probabilistic and nondeterministic transitions, component models with inheritance, and exceptions. Test cases are generated as sequences of method calls to the API that can be directly executed against the SUT. To spread the transmissions over several multiframes instead of transmitting them consecutively in time, will provide time diversity, improving the reception of the block. •Statement coverage is the proportion of source statements exercised by the test set.

4 Relationship Between CT and Structural Coverage

The EC-PDTCH/U peak physical layer data rate matches the EC-PDTCH/D 489.6kbps across the 20ms TTI. For devices only supporting GMSK modulation on the transmitter side, the highest modulation and coding scheme is MCS-4, https://www.globalcloudteam.com/ which contains a RLC/MAC header of 4 octets and a single RLC block of 44 octets. In this case 16 MCS-4 RLC blocks can be scheduled during 40ms every 120ms leading to an uplink peak MAC-layer data rate of 51.2kbps.

• However for MCDC the above test cases are not sufficient because in MCDC each Boolean variable should be evaluated to TRUE and FALSE at least once and also affect the decision outcome.
• Applied combinatorial methods in producing MCDC-adequate test suites for a component of software defined radio system, showing that tests based on covering arrays could produce 100% MCDC coverage.
• On the other hand, in condition coverage, all possible outcomes of all conditions must be tested at least once.
• Condition/decision coverage requires that both decision and condition coverage be satisfied.
• All meanings are written according to their generally accepted international interpretation.

To fulfil condition coverage, Boolean expression X, Y and Z will be evaluated in TRUE and FALSE form, at least once. In Multiple Condition Coverage for each decision all the combinations of conditions should be evaluated. It is also highly recommended for SIL 4 in part 3 Annex B of the basic safety publication and ASIL D in part 6 of automotive standard ISO 26262.

Other coverage criteria

However, for safety-critical applications it is often required that modified condition/decision coverage (MC/DC) be satisfied. This criterion extends condition/decision criteria with requirements that each condition should affect the decision outcome independently. However, what is wrong in the previous statement is the definition of decision. A decision includes ‘any’ boolean expression, even for assignments to variables. In this case, the three assignments should be treated as a decision for MC/DC purposes and therefore the changed code needs exactly the same tests and number of tests to achieve MC/DC than the first one. Some code coverage tools do not use this strict interpretation of a decision and may produce false positives (reporting 100% code coverage when indeed this is not the case).

There is a compound condition, a && b && c, with three basic conditions, a, b and c. It takes only two test cases, one where all basic conditions are true and one where all are false, to get full basic condition coverage. It doesn’t matter that the basic conditions happen to be part of a compound condition. Presents EC-PDTCH MAC-layer data rates in the range of 0.5–0.6kbps and 0.5–2.3kbps in the uplink and downlink, respectively. These data rates are applicable under extreme coverage conditions.

Meaning of multiple condition coverage

We believe that model-based techniques, in particular model-based testing, can help in dealing with these challenges. Thereby, we can use abstract models as primary development and testing artifacts for different tasks of developers and testers, e.g., for supporting the communication, documentation, and automation. However, in practice, these principles are likely to be misinterpreted such that developers often neglect documenting customer requirements properly. Frequently, this leads to chaos in the development process and to conflicts during the delivery and acceptance. Thus, it is a challenge to follow the principles of the agile manifesto and thereby not to lose sight of the proper documentation and communication of customer needs and of the efficient and effective development.

Unfortunately, since MBT often requires a separate model for testing purposes, the reuse of models created by developers constitutes another challenge. Another challenge of the state-of-the-art MBT is the missing support for non-functional testing. And then tested with the objective of achieving MCDC requirements specified by the Federal Aviation Administration.

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I’m trying to get my head around the differences between these 2 coverage criteria and I can’t work out how they differ. I think I’m failing to understand exactly what decision coverage is. My software testing textbook states that compound decision coverage can be costly .