/// <summary>
/// Calculates traditional defect density for specified code.
/// Total code size is LOC at the moment
/// (added code minus removed code).
/// </summary>
/// <param name="code">Code set to calc metric for.</param>
/// <returns>Defect density.</returns>
public static double CalculateTraditionalDefectDensity(this CodeBlockSelectionExpression code)
{
code = code.Added().Fixed();
return(CalculateDefectDensity(
code.CalculateLOC() + code.ModifiedBy().Deleted().CalculateLOC(),
code.CalculateNumberOfDefects()
));
}
/// <summary>
/// Calculates alternative defect density for specified code.
/// Total code size is added LOC at the moment.
/// </summary>
/// <param name="code"></param>
/// <returns></returns>
public static double CalculateDefectDensity(this CodeBlockSelectionExpression code)
{
code = code.Added().Fixed();
return(CalculateDefectDensity(
code.CalculateLOC(),
code.CalculateNumberOfDefects()
));
}
public static double CalculateDefectCodeSizePerDefect(this CodeBlockSelectionExpression code, string revision)
{
code = code.Fixed();
int numberOfDefects = code.CalculateNumberOfDefects(revision);
return(numberOfDefects > 0 ?
code.CalculateDefectCodeSize(revision) / numberOfDefects
:
0);
}
public static double CalculateDefectDensity(this CodeBlockSelectionExpression code, string revision)
{
code = code
.Commits().TillRevision(revision)
.CodeBlocks().Again().AddedInitiallyInCommits().Fixed();
return(CalculateDefectDensity(
code.CalculateLOC(),
code.CalculateNumberOfDefects(revision)
));
}
/// <summary>
/// Calculate traditional defect density for specified code
/// were added in revision or before it.
/// </summary>
public static double CalculateTraditionalDefectDensity(this CodeBlockSelectionExpression code, string revision)
{
code = code
.Commits().TillRevision(revision)
.CodeBlocks().Again().AddedInitiallyInCommits().Fixed();
return(CalculateDefectDensity(
code.CalculateNumberOfDefects(revision),
code.CalculateLOC()
+
code
.Modifications().InCommits()
.CodeBlocks().Again().ModifiedBy().Removed().InModifications().CalculateLOC()
));
}