Quality Assurance Consulting: The Reasons Why Testers Fail to Achieve 100% Code Coverage

Quality Assurance Consulting: The Reasons Why Testers Fail to Achieve 100% Code Coverage

On top of everything else, business bakers and stakeholders are also responsible for choosing the coverage metric used to test a given IT product. The goal is to always attain 100% coverage using the chosen metric. Monitoring code coverage for apps helps to determine if there is a necessity to increase the amount of testing by including additional tests in test project. If the goal is to achieve 100% branch coverage – it can be achieved with a reduced set of tests and then testing can be stopped, since it is obvious that all important branches have been implemented in this application. When branch coverage is less than 100%, additional tests are required to ultimately get full branch coverage. Quality assurance consulting gives you the chance to acquire invaluable knowledge on how to build better software.

It is impossible to achieve 100% coverage due to a number of factors.

1. There is an inaccessible code. Testers can, in conversation with developers, raise the issue on removing this inaccessible code.
2. The source code has additional functions that are not documented in the original specification. Testers should consult the authoritative person of the project and determine whether or not this issue was caused by incomplete or inaccurate documentation and whether it needs to be corrected.
3. Statement coverage can also depend on the compiler ignoring parts of the logical expressions that do not affect the outcome. For example, when the logical expression XAM)Y is evaluated, if FALSE value is set to X, the full expression will be assigned FALSE, not taking into account the Y value. Although such “scheme cancellation” function saves test execution time, the uncompleted parts of expressions can contain errors. Testers should turn to the developers for help – to put forward all these problems for consideration and thus assess the seriousness of the situation. Quality assurance organizations will make it possible for you to achieve 100% code, branch and statement coverage.

Although there are many more types of test coverage, the three types – condition, decision / branch, statement coverage – provide extensive feedback for evaluating the effectiveness of the tests obtained from the decision table. When choosing between a shortened and an extended set of tests, an adequate criterion can be the achievement of 100% branch coverage. Software testing lab is a well-equipped room where qualified testers and quality assurance specialists conduct quality analyses in the most effective way.