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Ouput test duration and stack trace in TAP YAML block #1209

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Ouput test duration and stack trace in TAP YAML block #1209

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74cd900
Ouput test duration and stack trace in TAP YAML block
albanf May 7, 2014
cf92bcc
Output must use "duration_ms" property and be in seconds
albanf May 7, 2014
5c00c4d
Report in ms instead of s
albanf May 20, 2014
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21 changes: 20 additions & 1 deletion lib/reporters/tap.js
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
var Base = require('./base')
, cursor = Base.cursor
, color = Base.color;
var YAML = require('yamljs');

/**
* Expose `TAP`.
Expand Down Expand Up @@ -45,12 +46,13 @@ function TAP(runner) {
runner.on('pass', function(test){
passes++;
console.log('ok %d %s', n, title(test));
writeDiagnostic(test);
});

runner.on('fail', function(test, err){
failures++;
console.log('not ok %d %s', n, title(test));
if (err.stack) console.log(err.stack.replace(/^/gm, ' '));
writeDiagnostic(test, err);
});

runner.on('end', function(){
Expand All @@ -71,3 +73,20 @@ function TAP(runner) {
function title(test) {
return test.fullTitle().replace(/#/g, '');
}

/**
* Output TAP diagnostic in YAML format
* @param {Object} test
* @param {Object} err
* @api private
*/
function writeDiagnostic(test, err){
var obj = {};
if (test.duration) obj.duration_ms = test.duration / 1000;
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Wait, so the name suggest it's milliseconds (duration_ms) when in fact it is seconds (/ 1000)?!

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what? ms = seconds / 1000

A millisecond (from milli- and second; abbreviation: ms) is a thousandth (10−3 or 1/1,000) of a second.[1] Its symbol is ms. One millisecond is to one second as one second is to 16.67 minutes.

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Hmm, a couple of things went wrong here :) I assumed that test.duration was in milliseconds, since that's the standard unit in javascript.

Also, 1000ms === 1s so to convert from seconds to milliseconds we need to multiply it with 1000, since it takes 1000ms to make up 1s. Heh, converting between time units is always a pain.

The correct code should, I think, be obj.duration_ms = test.duration * 1000.

if (err && err.stack) obj.stacktrace = err.stack;
if (Object.keys(obj).length > 0) {
console.log(' ---');
console.log(YAML.stringify(obj, 4).replace(/^/gm, ' '));
console.log(' ...');
}
}
3 changes: 2 additions & 1 deletion package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,8 @@
"diff": "1.0.7",
"debug": "*",
"mkdirp": "0.3.5",
"glob": "3.2.3"
"glob": "3.2.3",
"yamljs": "0.1.5"
},
"devDependencies": {
"should": ">= 2.0.x",
Expand Down