json-cov.js
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/**
* Module dependencies.
*/
var Base = require('./base');
/**
* Expose `JSONCov`.
*/
exports = module.exports = JSONCov;
/**
* Initialize a new `JsCoverage` reporter.
*
* @api public
* @param {Runner} runner
* @param {boolean} output
*/
function JSONCov(runner, output) {
Base.call(this, runner);
output = arguments.length === 1 || output;
var self = this;
var tests = [];
var failures = [];
var passes = [];
runner.on('test end', function(test) {
tests.push(test);
});
runner.on('pass', function(test) {
passes.push(test);
});
runner.on('fail', function(test) {
failures.push(test);
});
runner.on('end', function() {
var cov = global._$jscoverage || {};
var result = self.cov = map(cov);
result.stats = self.stats;
result.tests = tests.map(clean);
result.failures = failures.map(clean);
result.passes = passes.map(clean);
if (!output) {
return;
}
process.stdout.write(JSON.stringify(result, null, 2));
});
}
/**
* Map jscoverage data to a JSON structure
* suitable for reporting.
*
* @api private
* @param {Object} cov
* @return {Object}
*/
function map(cov) {
var ret = {
instrumentation: 'node-jscoverage',
sloc: 0,
hits: 0,
misses: 0,
coverage: 0,
files: []
};
for (var filename in cov) {
if (Object.prototype.hasOwnProperty.call(cov, filename)) {
var data = coverage(filename, cov[filename]);
ret.files.push(data);
ret.hits += data.hits;
ret.misses += data.misses;
ret.sloc += data.sloc;
}
}
ret.files.sort(function(a, b) {
return a.filename.localeCompare(b.filename);
});
if (ret.sloc > 0) {
ret.coverage = (ret.hits / ret.sloc) * 100;
}
return ret;
}
/**
* Map jscoverage data for a single source file
* to a JSON structure suitable for reporting.
*
* @api private
* @param {string} filename name of the source file
* @param {Object} data jscoverage coverage data
* @return {Object}
*/
function coverage(filename, data) {
var ret = {
filename: filename,
coverage: 0,
hits: 0,
misses: 0,
sloc: 0,
source: {}
};
data.source.forEach(function(line, num) {
num++;
if (data[num] === 0) {
ret.misses++;
ret.sloc++;
} else if (data[num] !== undefined) {
ret.hits++;
ret.sloc++;
}
ret.source[num] = {
source: line,
coverage: data[num] === undefined ? '' : data[num]
};
});
ret.coverage = ret.hits / ret.sloc * 100;
return ret;
}
/**
* Return a plain-object representation of `test`
* free of cyclic properties etc.
*
* @api private
* @param {Object} test
* @return {Object}
*/
function clean(test) {
return {
duration: test.duration,
fullTitle: test.fullTitle(),
title: test.title
};
}