Kashura WirralMerseysideEngland. Views Read Edit View history. Static analysis initiates LDRA Testbed activity by undertaking lexical and syntactic analysis of the source code for a single file or a complete system. The LDRA tool suite includes a dynamic coverage amodule. It is used primarily where software is required to be reliable, rugged, and testber error-free as possible, such as in safety critical aerospace electronics or avionics.
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History[ edit ] Liverpool Data Research Associates LDRA was founded in by Professor Michael Hennell to commercialize a software test-bed created to perform quality assessments on the mathematical libraries on which his nuclear physics research at the University of Liverpool depended.
It is a commercial implementation of the software test-bed created by Hennell as part of his university research. It was the first commercial product to include support for the Linear Code Sequence and Jump software analysis method, which resulted from the same research. It is used primarily where software is required to be reliable, rugged, and as error-free as possible, such as in safety critical aerospace electronics or avionics.
Static analysis[ edit ] Static analysis initiates LDRA Testbed activity by undertaking lexical and syntactic analysis of the source code for a single file or a complete system. Programming standards checking[ edit ] The enforcement of programming standards or coding standards is commonly regarded as good practice.
Main Static Analysis searches the source code for any programming standards violations, by checking the source files against the superset supplied with LDRA Testbed. This system can be configured for: User definable filters — switch standards on or off Change standards from mandatory to optional or vice versa.
Use annotations to switch off standards for specific instances of violations. LDRA Testbed reports violations of the chosen set of standards in both textual reports and as annotations to graphical displays Dynamic coverage analysis[ edit ] Dynamic coverage analysis explores the semantics of the program-under-test via test data selection.
It uses control and data flow models and compares them with the actual control and data flow as the program executes. Dynamic Analysis, therefore, forces the selection of test data which explores the structure of the source code. The LDRA tool suite includes a dynamic coverage amodule. It is used to beneficial effect on software robustness and reliability during both development and maintenance cycles.
Quality report[ edit ] Quality metrics such as Halstead complexity measures , cyclomatic complexity , Knots metric are designed to verify that code is clear, maintainable and testable.
The quality report in the LDRA tool suite presents both a summary and detailed breakdown of quality metrics which are deduced during static analysis.
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