Fix total coverage calculation #17
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Per https://confluence.atlassian.com/pages/viewpage.action?pageId=79986990 which is already referenced for the calculation: So in order to calculate the Total Percentage Coverage metric using data from an XML report you have to use the following equation: TPC = (coveredconditionals + coveredstatements + coveredmethods) / (conditionals + statements + methods) Using elements is incorrect because, as that page notes, "elements" is conditionals + statements, which means the previous calculation would double-count statements. Also, the clover-format XML includes multiple `metrics` elements which were being redundantly counted. Each `file` element contains a `metrics` element, but then there is also a `metrics` element within each `class` defined in that file. Finally, there is a `project` level `metrics` element which summarizes all the files tested. Therefore, we only need to pick out the `project` level element to get the total metrics, and the summing is not necessary. However, I've left the summing in place so that this could be extended with, for instance, a coverage check on only modified files.
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@ggilder fancy repeating your PR over here? https://github.com/willpower232/cloverparser/blob/537ab3a8807b7c9bce9148a0e674278b3fb64952/src/CloverParser.php#L102-L109 |
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Per https://confluence.atlassian.com/pages/viewpage.action?pageId=79986990 which is already referenced for the calculation:
Using elements is incorrect because, as that page notes, "elements" is conditionals + statements, which means the previous calculation would double-count statements.
Also, the clover-format XML includes multiple
metricselements which were being redundantly counted. Eachfileelement contains ametricselement, but then there is also ametricselement within eachclassdefined in that file. Finally, there is aprojectlevelmetricselement which summarizes all the files tested.Therefore, we only need to pick out the
projectlevel element to get the total metrics, and the summing is not necessary. However, I've left the summing in place so that this could be extended with, for instance, a coverage check on only modified files.