"use strict";
var fs = require("fs");
var XMLSplitter = require("xml-splitter");
var coberturaParser = require("./coberturaReportParser");
module.exports = parseIstanbulReport;
/**
* Parses a given istanbul report file path and returns the XML "coverage" element containing the report results.
*
* @param {String} reportFilePath The location where the istanbul report in cobertura xml format is located.
* @param {Function} callback Th regular CPS function.
*/
function parseIstanbulReport(reportFilePath, callback) {
if (!reportFilePath) {
return callback(new Error("The istanbul report file path must be provided!"));
}
// Read the XML cobertura report
fs.readFile(reportFilePath, function(err, coberturaXmlReport) {
if (err && err.code === "ENOENT") {
return callback(new Error("The istanbul report file '" + reportFilePath + "' does not exist!"));
} else Iif (err) {
return callback(new Error("Error while reading the istanbul file '" + reportFilePath + "': " + err.message));
}
// Parse the cobertura root element.
var xs = new XMLSplitter("/coverage");
var errorOnce = false;
// Calculate the final percent based on the line and branch rates
xs.on("data", function parsingCoverageTag(xml) {
// Calculate the function rate based on the functions collected.
var methods = {
total: 0,
passed: 0
};
// Parse the xml in regards to the methods above.
coberturaParser(xml, methods);
// All the rates for the final result.
var functionRate = parseFloat(methods.passed / methods.total);
var lineRate = parseFloat(xml["line-rate"]);
var branchRate = parseFloat(xml["branch-rate"]);
// Calculate the final percent based on the line and branch rates$
var percent = Math.floor(((functionRate + lineRate + branchRate) / 3) * 100);
return callback(null, {
overallPercent: percent,
functionRate: functionRate,
lineRate: lineRate,
branchRate: branchRate
});
}).on("error", function handlingError(error) {
var parsingError = new Error("Error parsing the given istanbul report (" + reportFilePath + "): ");
parsingError.stack = error.stack;
if (!errorOnce) {
errorOnce = true;
return callback(parsingError);
}
}).parseString(coberturaXmlReport);
});
}
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