Sebastian Bergmann

The upcoming 3.2 release of PHPUnit adds a couple of software metrics to the data that is stored in PHPUnit's test database. Below is a list of the metrics that are calculated and collected:

• Project Level
  • Number of Interfaces (INTERFS)
  • Number of Abstract Classes (CLSa)
  • Number of Concrete Classes (CLSc)
  • Number of Classes (CLS)
  • Number of Root Classes (ROOTS)
  • Number of Leaf Classes (LEAFS)
  • Maximum Depth of Intheritance Tree (maxDIT)
• File Level
  • Lines of Code (LOC)
  • Comment Lines of Code (CLOC)
  • Non-Comment Lines of Code (NCLOC)
  • Lines of Executable Code (ELOC)
  • Lines of Executed Code
  • Code Coverage
• Function Level
  • Lines of Code (LOC)
  • Lines of Executable Code (ELOC)
  • Lines of Executed Code
  • Code Coverage
  • Cyclomatic Complexity
  • Change Risk Analysis and Predictions (CRAP) Index
• Class Level
  • Lines of Code (LOC)
  • Lines of Executable Code (ELOC)
  • Lines of Executed Code
  • Code Coverage
  • Attribute Inheritance Factor (AIF)
  • Attribute Hiding Factor (AHF)
  • Class Size (CSZ)
  • Class Interface Size (CIS)
  • Depth of Inheritance Tree (DIT)
  • Method Inheritance Factor (MIF)
  • Method Hiding Factor (MHF)
  • Number of Children (NOC)
  • Number of Interfaces Implemented (IMPL)
  • Number of Variables (VARS)
  • Number of Non-Private Variables (VARSnp)
  • Number of Variables (VARSi)
  • Polymorphism Factor (PF)
  • Weighted Methods per Class (WMC)
  • Weighted Non-Private Methods per Class (WMCnp)
  • Weighted Inherited Methods per Class (WMCi)
• Method Level
  • Lines of Code (LOC)
  • Lines of Executable Code (ELOC)
  • Lines of Executed Code
  • Code Coverage
  • Cyclomatic Complexity
  • Change Risk Analysis and Predictions (CRAP) Index

The example below shows how you can access, for instance, the Cyclomatic Complexity information for all methods of a project.