ExpressoInsanely fast TDD framework for node featuring code coverage reporting. | |
| bin/expresso |
!/usr/bin/env node
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!
* Expresso
* Copyright(c) TJ Holowaychuk <tj@vision-media.ca>
* (MIT Licensed)
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Module dependencies.
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var assert = require('assert'),
childProcess = require('child_process'),
http = require('http'),
path = require('path'),
sys = require('sys'),
cwd = process.cwd(),
fs = require('fs'),
defer;
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Expresso version.
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var version = '0.6.1';
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Failure count.
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var failures = 0;
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Number of tests executed.
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var testcount = 0;
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Whitelist of tests to run.
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var only = [];
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Boring output.
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var boring = false;
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Growl notifications.
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var growl = false;
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Server port.
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var port = 5555;
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Watch mode.
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var watch = false;
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Execute serially.
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var serial = false;
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Usage documentation.
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var usage = ''
+ '[bold]{Usage}: expresso [options] <file ...>'
+ '\n'
+ '\n[bold]{Options}:'
+ '\n -w, --watch Watch for modifications and re-execute tests'
+ '\n -g, --growl Enable growl notifications'
+ '\n -c, --coverage Generate and report test coverage'
+ '\n -r, --require PATH Require the given module path'
+ '\n -o, --only TESTS Execute only the comma sperated TESTS (can be set several times)'
+ '\n -I, --include PATH Unshift the given path to require.paths'
+ '\n -p, --port NUM Port number for test servers, starts at 5555'
+ '\n -s, --serial Execute tests serially'
+ '\n -b, --boring Suppress ansi-escape colors'
+ '\n -v, --version Output version number'
+ '\n -h, --help Display help information'
+ '\n';
var files = [],
args = process.argv.slice(2);
while (args.length) {
var arg = args.shift();
switch (arg) {
case '-h':
case '--help':
print(usage + '\n');
process.exit(1);
break;
case '-v':
case '--version':
sys.puts(version);
process.exit(1);
break;
case '-i':
case '-I':
case '--include':
if (arg = args.shift()) {
require.paths.unshift(arg);
} else {
throw new Error('--include requires a path');
}
break;
case '-o':
case '--only':
if (arg = args.shift()) {
only = only.concat(arg.split(/ *, */));
} else {
throw new Error('--only requires comma-separated test names');
}
break;
case '-p':
case '--port':
if (arg = args.shift()) {
port = parseInt(arg, 10);
} else {
throw new Error('--port requires a number');
}
break;
case '-r':
case '--require':
if (arg = args.shift()) {
require(arg);
} else {
throw new Error('--require requires a path');
}
break;
case '-c':
case '--cov':
case '--coverage':
defer = true;
childProcess.exec('rm -fr lib-cov && node-jscoverage lib lib-cov', function(err){
if (err) throw err;
require.paths.unshift('lib-cov');
run(files);
})
break;
case '-b':
case '--boring':
boring = true;
break;
case '-w':
case '--watch':
watch = true;
break;
case '-g':
case '--growl':
growl = true;
break;
case '-s':
case '--serial':
serial = true;
break;
default:
if (/\.js$/.test(arg)) {
files.push(arg);
}
break;
}
}
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Colorized sys.error().
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function print(str){
sys.error(colorize(str));
}
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Colorize the given string using ansi-escape sequences.
Disabled when --boring is set.
param: String str return: String
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function colorize(str){
var colors = { bold: 1, red: 31, green: 32, yellow: 33 };
return str.replace(/\[(\w+)\]\{([^]*?)\}/g, function(_, color, str){
return boring
? str
: '\x1B[' + colors[color] + 'm' + str + '\x1B[0m';
});
}
assert.eql = assert.deepEqual;
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Assert that val is null.
param: Mixed val param: String msg
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assert.isNull = function(val, msg) {
assert.strictEqual(null, val, msg);
};
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Assert that val is not null.
param: Mixed val param: String msg
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assert.isNotNull = function(val, msg) {
assert.notStrictEqual(null, val, msg);
};
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Assert that val is undefined.
param: Mixed val param: String msg
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assert.isUndefined = function(val, msg) {
assert.strictEqual(undefined, val, msg);
};
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Assert that val is not undefined.
param: Mixed val param: String msg
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assert.isDefined = function(val, msg) {
assert.notStrictEqual(undefined, val, msg);
};
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Assert that obj is type.
param: Mixed obj param: String type api: public
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assert.type = function(obj, type, msg){
var real = typeof obj;
msg = msg || 'typeof ' + sys.inspect(obj) + ' is ' + real + ', expected ' + type;
assert.ok(type === real, msg);
};
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Assert that str matches regexp.
param: String str param: RegExp regexp param: String msg
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assert.match = function(str, regexp, msg) {
msg = msg || sys.inspect(str) + ' does not match ' + sys.inspect(regexp);
assert.ok(regexp.test(str), msg);
};
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Assert that val is within obj.
Examples
assert.includes('foobar', 'bar');
assert.includes(['foo', 'bar'], 'foo');
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assert.includes = function(obj, val, msg) {
msg = msg || sys.inspect(obj) + ' does not include ' + sys.inspect(val);
assert.ok(obj.indexOf(val) >= 0, msg);
};
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Assert length of val is n.
param: Mixed val param: Number n param: String msg
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assert.length = function(val, n, msg) {
msg = msg || sys.inspect(val) + ' has length of ' + val.length + ', expected ' + n;
assert.equal(n, val.length, msg);
};
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Assert response from server with
the given req object and res assertions object.
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assert.response = function(server, req, res, msg){
var callback = typeof res === 'function'
? res
: typeof msg === 'function'
? msg
: function(){};
if (typeof msg === 'function') msg = null;
msg = msg || assert.testTitle;
msg += '. ';
server.__pending = server.__pending || 0;
server.__pending++;
if (!server.fd) {
server.listen(server.__port = port++, '127.0.0.1');
server.client = http.createClient(server.__port);
}
var timer,
client = server.client,
method = req.method || 'GET',
status = res.status || res.statusCode,
data = req.data || req.body,
timeout = req.timeout || 0;
var request = client.request(method, req.url, req.headers);
if (timeout) {
timer = setTimeout(function(){
--server.__pending || server.close();
delete req.timeout;
assert.fail(msg + 'Request timed out after ' + timeout + 'ms.');
}, timeout);
}
if (data) request.write(data);
request.addListener('response', function(response){
response.body = '';
response.setEncoding('utf8');
response.addListener('data', function(chunk){ response.body += chunk; });
response.addListener('end', function(){
--server.__pending || server.close();
if (timer) clearTimeout(timer);
if (res.body !== undefined) {
assert.equal(
response.body,
res.body,
msg + 'Invalid response body.\n'
+ ' Expected: ' + sys.inspect(res.body) + '\n'
+ ' Got: ' + sys.inspect(response.body)
);
}
if (typeof status === 'number') {
assert.equal(
response.statusCode,
status,
msg + colorize('Invalid response status code.\n'
+ ' Expected: [green]{' + status + '}\n'
+ ' Got: [red]{' + response.statusCode + '}')
);
}
if (res.headers) {
var keys = Object.keys(res.headers);
for (var i = 0, len = keys.length; i < len; ++i) {
var name = keys[i],
actual = response.headers[name.toLowerCase()],
expected = res.headers[name];
assert.equal(
actual,
expected,
msg + colorize('Invalid response header [bold]{' + name + '}.\n'
+ ' Expected: [green]{' + expected + '}\n'
+ ' Got: [red]{' + actual + '}')
);
}
}
callback(response);
});
});
request.end();
};
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Pad the given string to the maximum width provided.
param: String str param: Number width return: String
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function lpad(str, width) {
str = String(str);
var n = width - str.length;
if (n < 1) return str;
while (n--) str = ' ' + str;
return str;
}
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Pad the given string to the maximum width provided.
param: String str param: Number width return: String
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function rpad(str, width) {
str = String(str);
var n = width - str.length;
if (n < 1) return str;
while (n--) str = str + ' ';
return str;
}
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Report test coverage.
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function reportCoverage(cov) {
populateCoverage(cov);
print('\n [bold]{Test Coverage}\n');
var sep = ' +------------------------------------------+----------+------+------+--------+',
lastSep = ' +----------+------+------+--------+';
sys.puts(sep);
sys.puts(' | filename | coverage | LOC | SLOC | missed |');
sys.puts(sep);
for (var name in cov) {
var file = cov[name];
if (Array.isArray(file)) {
sys.print(' | ' + rpad(name, 40));
sys.print(' | ' + lpad(file.coverage.toFixed(2), 8));
sys.print(' | ' + lpad(file.LOC, 4));
sys.print(' | ' + lpad(file.SLOC, 4));
sys.print(' | ' + lpad(file.totalMisses, 6));
sys.print(' |\n');
}
}
sys.puts(sep);
sys.print(' ' + rpad('', 40));
sys.print(' | ' + lpad(cov.coverage.toFixed(2), 8));
sys.print(' | ' + lpad(cov.LOC, 4));
sys.print(' | ' + lpad(cov.SLOC, 4));
sys.print(' | ' + lpad(cov.totalMisses, 6));
sys.print(' |\n');
sys.puts(lastSep);
for (var name in cov) {
if (name.match(/\.js$/)) {
var file = cov[name];
print('\n [bold]{' + name + '}:');
print(file.source);
sys.print('\n');
}
}
}
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Populate code coverage data.
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function populateCoverage(cov) {
cov.LOC =
cov.SLOC =
cov.totalFiles =
cov.totalHits =
cov.totalMisses =
cov.coverage = 0;
for (var name in cov) {
var file = cov[name];
if (Array.isArray(file)) {
++cov.totalFiles;
cov.totalHits += file.totalHits = coverage(file, true);
cov.totalMisses += file.totalMisses = coverage(file, false);
file.totalLines = file.totalHits + file.totalMisses;
cov.SLOC += file.SLOC = file.totalLines;
if (!file.source) file.source = [];
cov.LOC += file.LOC = file.source.length;
file.coverage = (file.totalHits / file.totalLines) * 100;
var width = file.source.length.toString().length;
file.source = file.source.map(function(line, i){
++i;
var hits = file[i] === 0 ? 0 : (file[i] || ' ');
if (!boring) {
if (hits === 0) {
hits = '\x1b[31m' + hits + '\x1b[0m';
line = '\x1b[41m' + line + '\x1b[0m';
} else {
hits = '\x1b[32m' + hits + '\x1b[0m';
}
}
return '\n ' + lpad(i, width) + ' | ' + hits + ' | ' + line;
}).join('');
}
}
cov.coverage = (cov.totalHits / cov.SLOC) * 100;
}
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Total coverage for the given file data.
param: Array data return: Type
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function coverage(data, val) {
var n = 0;
for (var i = 0, len = data.length; i < len; ++i) {
if (data[i] !== undefined && data[i] == val) ++n;
}
return n;
}
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Run the given test files, or try test/*.
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function run(files) {
if (!files.length) {
try {
files = fs.readdirSync('test').map(function(file){
return 'test/' + file;
});
} catch (err) {
print('\n failed to load tests in [bold]{./test}\n');
++failures;
process.exit(1);
}
}
if (watch) watchFiles(files);
runFiles(files);
}
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Show the cursor when show is true, otherwise hide it.
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function cursor(show) {
if (show) {
sys.print('\x1b[?25h');
} else {
sys.print('\x1b[?25l');
}
}
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Run the given test files.
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function runFiles(files) {
files.forEach(runFile);
}
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Run tests for the given file.
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function runFile(file) {
if (file.match(/\.js$/)) {
var title = path.basename(file),
file = path.join(cwd, file),
mod = require(file.replace(/\.js$/, ''));
(function check(){
var len = Object.keys(mod).length;
if (len) {
runSuite(title, mod);
} else {
setTimeout(check, 20);
}
})();
}
}
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Clear the module cache for the given file.
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function clearCache(file) {
var keys = Object.keys(module.moduleCache);
for (var i = 0, len = keys.length; i < len; ++i) {
var key = keys[i];
if (key.indexOf(file) === key.length - file.length) {
delete module.moduleCache[key];
}
}
}
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Watch the given files for changes.
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function watchFiles(files) {
var p = 0,
c = ['▫ ', '▫▫ ', '▫▫▫ ', ' ▫▫▫',
' ▫▫', ' ▫', ' ▫', ' ▫▫',
'▫▫▫ ', '▫▫ ', '▫ '],
l = c.length;
cursor(false);
setInterval(function(){
sys.print(colorize(' [green]{' + c[p++ % l] + '} watching\r'));
}, 100);
files.forEach(function(file){
fs.watchFile(file, { interval: 100 }, function(curr, prev){
if (curr.mtime > prev.mtime) {
print(' [yellow]{◦} ' + file);
clearCache(file);
runFile(file);
}
});
});
}
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Report err for the given test and suite.
param: String suite param: String test param: Error err
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function error(suite, test, err) {
++failures;
var name = err.name,
stack = err.stack.replace(err.name, ''),
label = test === 'uncaught'
? test
: suite + ' ' + test;
print('\n [bold]{' + label + '}: [red]{' + name + '}' + stack + '\n');
if (watch) notify(label + ' failed');
}
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Run the given tests.
param: String title param: Object tests
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var dots = 0;
function runSuite(title, tests) {
var keys = only.length
? only.slice(0)
: Object.keys(tests);
var setup = tests.setup || function(fn){ fn(); };
(function next(){
if (keys.length) {
var key,
test = tests[key = keys.shift()];
if (key === 'setup') return next();
if (test) {
try {
++testcount;
assert.testTitle = key;
if (serial) {
if (!watch) {
sys.print('.');
if (++dots % 25 === 0) sys.print('\n');
}
setup(function(){
if (test.length < 2) {
test(assert);
next();
} else {
var id = setTimeout(function(){
throw new Error("'" + key + "' timed out");
}, 2000);
test(assert, function(){
clearTimeout(id);
next();
});
}
});
} else {
test(assert, function(fn){
process.addListener('beforeExit', function(){
try {
fn();
} catch (err) {
error(title, key, err);
}
});
});
}
} catch (err) {
error(title, key, err);
}
}
if (!serial) next();
}
})();
}
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Report exceptions.
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function report() {
process.emit('beforeExit');
if (failures) {
print('\n [bold]{Failures}: [red]{' + failures + '}\n\n');
notify('Failures: ' + failures);
} else {
if (serial) print('');
print('\n [green]{100%} ' + testcount + ' tests\n');
notify('100% ok');
}
if (typeof _$jscoverage === 'object') {
reportCoverage(_$jscoverage);
}
}
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Growl notify the given msg.
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function notify(msg) {
if (growl) {
childProcess.exec('growlnotify -name Expresso -m "' + msg + '"');
}
}
process.addListener('uncaughtException', function(err){
error('uncaught', 'uncaught', err);
});
['INT', 'TERM', 'QUIT'].forEach(function(sig){
process.addListener('SIG' + sig, function(){
cursor(true);
process.exit(1);
});
});
var orig = process.emit;
process.emit = function(event){
if (event === 'exit') {
report();
process.reallyExit(failures);
}
orig.apply(this, arguments);
};
if (!defer) run(files);
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