AIS Administrative Information Services GS General Services Department

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep How do

AIS What is Software Quality? GS Functional Requirements: • Is the software useful to

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Find the

AIS The 10. 000 ft view • Is at the right level • Aggregates

AIS Metrics • Lines of Code • Size of Method • Size of Classes

AIS Functional Requirements Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Code Coverage

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Test/Code Ratio

AIS Cyclomatic Complexity GS A control flow graph of a simple program. The program

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Toxicity Chart

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Dependency Structure

AIS GS Dependency Structure Matrix ir a fa a t s a P Internet

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Dependency graphs

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Tree Maps

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep System Complexity

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Environment Set

AIS How do you see quality? Making comparisions • Industry standards • Trends •

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Beware of

AIS GS Спасибо! David. Gonzalez. Maline@cern. ch Internet Services CERN GS Department CH-1211 Genève

Slides: 26

Download presentation

AIS Administrative Information Services GS General Services Department How to be aware of Software Quality Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep David Gonzalez Maline May 15 th 2012 GS

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep How do we measure SQ? GS

AIS What is Software Quality? GS Functional Requirements: • Is the software useful to the users? Non Functional Requirements: • Is the design appropriate? Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep • Is it easy to understand/maintain?

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Find the right perspective GS

AIS The 10. 000 ft view • Is at the right level • Aggregates data and metrics • Uses visual techniques • Depends on the question Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep http: //softarch. 97 things. oreilly. com/wiki/index. php/Get_the_1000 ft_view GS

AIS Metrics • Lines of Code • Size of Method • Size of Classes • Duplication Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep • Different complexities GS

AIS Functional Requirements Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep http: //www. alfredodehoces. com/fuckowski-on-line GS

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Code Coverage GS

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Test/Code Ratio GS

AIS Cyclomatic Complexity GS A control flow graph of a simple program. The program begins executing at the red node, then enters a loop (group of three nodes immediately below the red node). On exiting the loop, there is a conditional statement (group below the loop), and finally the program exits at the blue node. For this graph, E = 9, N = 8 and P = 1, so the cyclomatic complexity of the program is 9 8 + (2*1) = 3. Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Toxicity Chart GS

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Dependency Structure Matrix GS

AIS GS Dependency Structure Matrix ir a fa a t s a P Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep ! n

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Dependency Structure Matrix GS

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Dependency graphs GS

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Tree Maps GS

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep System Complexity View GS

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Environment Set Up GS

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Environment Set Up Introscope® Workstation GS

AIS How do you see quality? Making comparisions • Industry standards • Trends • Outliers Aesthetics • Symmetry Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep • Balance/harmony GS

AIS Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep Beware of this religion! GS

AIS GS Спасибо! David. Gonzalez. Maline@cern. ch Internet Services CERN GS Department CH-1211 Genève 23 Switzerland cern. ch/gs-dep