wallet-core/node_modules/readdirp/test/readdirp-stream.js
2017-05-03 15:35:00 +02:00

339 lines
9.1 KiB
JavaScript

/*jshint asi:true */
var debug //= true;
var test = debug ? function () {} : require('tap').test
var test_ = !debug ? function () {} : require('tap').test
, path = require('path')
, fs = require('fs')
, util = require('util')
, TransformStream = require('readable-stream').Transform
, through = require('through2')
, proxyquire = require('proxyquire')
, streamapi = require('../stream-api')
, readdirp = require('..')
, root = path.join(__dirname, 'bed')
, totalDirs = 6
, totalFiles = 12
, ext1Files = 4
, ext2Files = 3
, ext3Files = 2
;
// see test/readdirp.js for test bed layout
function opts (extend) {
var o = { root: root };
if (extend) {
for (var prop in extend) {
o[prop] = extend[prop];
}
}
return o;
}
function capture () {
var result = { entries: [], errors: [], ended: false }
, dst = new TransformStream({ objectMode: true });
dst._transform = function (entry, _, cb) {
result.entries.push(entry);
cb();
}
dst._flush = function (cb) {
result.ended = true;
this.push(result);
cb();
}
return dst;
}
test('\nintegrated', function (t) {
t.test('\n# reading root without filter', function (t) {
t.plan(2);
readdirp(opts())
.on('error', function (err) {
t.fail('should not throw error', err);
})
.pipe(capture())
.pipe(through.obj(
function (result, _ , cb) {
t.equals(result.entries.length, totalFiles, 'emits all files');
t.ok(result.ended, 'ends stream');
t.end();
cb();
}
));
})
t.test('\n# normal: ["*.ext1", "*.ext3"]', function (t) {
t.plan(2);
readdirp(opts( { fileFilter: [ '*.ext1', '*.ext3' ] } ))
.on('error', function (err) {
t.fail('should not throw error', err);
})
.pipe(capture())
.pipe(through.obj(
function (result, _ , cb) {
t.equals(result.entries.length, ext1Files + ext3Files, 'all ext1 and ext3 files');
t.ok(result.ended, 'ends stream');
t.end();
cb();
}
))
})
t.test('\n# files only', function (t) {
t.plan(2);
readdirp(opts( { entryType: 'files' } ))
.on('error', function (err) {
t.fail('should not throw error', err);
})
.pipe(capture())
.pipe(through.obj(
function (result, _ , cb) {
t.equals(result.entries.length, totalFiles, 'returned files');
t.ok(result.ended, 'ends stream');
t.end();
cb();
}
))
})
t.test('\n# directories only', function (t) {
t.plan(2);
readdirp(opts( { entryType: 'directories' } ))
.on('error', function (err) {
t.fail('should not throw error', err);
})
.pipe(capture())
.pipe(through.obj(
function (result, _ , cb) {
t.equals(result.entries.length, totalDirs, 'returned directories');
t.ok(result.ended, 'ends stream');
t.end();
cb();
}
))
})
t.test('\n# both directories + files', function (t) {
t.plan(2);
readdirp(opts( { entryType: 'both' } ))
.on('error', function (err) {
t.fail('should not throw error', err);
})
.pipe(capture())
.pipe(through.obj(
function (result, _ , cb) {
t.equals(result.entries.length, totalDirs + totalFiles, 'returned everything');
t.ok(result.ended, 'ends stream');
t.end();
cb();
}
))
})
t.test('\n# directory filter with directories only', function (t) {
t.plan(2);
readdirp(opts( { entryType: 'directories', directoryFilter: [ 'root_dir1', '*dir1_subdir1' ] } ))
.on('error', function (err) {
t.fail('should not throw error', err);
})
.pipe(capture())
.pipe(through.obj(
function (result, _ , cb) {
t.equals(result.entries.length, 2, 'two directories');
t.ok(result.ended, 'ends stream');
t.end();
cb();
}
))
})
t.test('\n# directory and file filters with both entries', function (t) {
t.plan(2);
readdirp(opts( { entryType: 'both', directoryFilter: [ 'root_dir1', '*dir1_subdir1' ], fileFilter: [ '!*.ext1' ] } ))
.on('error', function (err) {
t.fail('should not throw error', err);
})
.pipe(capture())
.pipe(through.obj(
function (result, _ , cb) {
t.equals(result.entries.length, 6, '2 directories and 4 files');
t.ok(result.ended, 'ends stream');
t.end();
cb();
}
))
})
t.test('\n# negated: ["!*.ext1", "!*.ext3"]', function (t) {
t.plan(2);
readdirp(opts( { fileFilter: [ '!*.ext1', '!*.ext3' ] } ))
.on('error', function (err) {
t.fail('should not throw error', err);
})
.pipe(capture())
.pipe(through.obj(
function (result, _ , cb) {
t.equals(result.entries.length, totalFiles - ext1Files - ext3Files, 'all but ext1 and ext3 files');
t.ok(result.ended, 'ends stream');
t.end();
}
))
})
t.test('\n# no options given', function (t) {
t.plan(1);
readdirp()
.on('error', function (err) {
t.similar(err.toString() , /Need to pass at least one argument/ , 'emits meaningful error');
t.end();
})
})
t.test('\n# mixed: ["*.ext1", "!*.ext3"]', function (t) {
t.plan(1);
readdirp(opts( { fileFilter: [ '*.ext1', '!*.ext3' ] } ))
.on('error', function (err) {
t.similar(err.toString() , /Cannot mix negated with non negated glob filters/ , 'emits meaningful error');
t.end();
})
})
})
test('\napi separately', function (t) {
t.test('\n# handleError', function (t) {
t.plan(1);
var api = streamapi()
, warning = new Error('some file caused problems');
api.stream
.on('warn', function (err) {
t.equals(err, warning, 'warns with the handled error');
})
api.handleError(warning);
})
t.test('\n# when stream is paused and then resumed', function (t) {
t.plan(6);
var api = streamapi()
, resumed = false
, fatalError = new Error('fatal!')
, nonfatalError = new Error('nonfatal!')
, processedData = 'some data'
;
api.stream
.on('warn', function (err) {
t.equals(err, nonfatalError, 'emits the buffered warning');
t.ok(resumed, 'emits warning only after it was resumed');
})
.on('error', function (err) {
t.equals(err, fatalError, 'emits the buffered fatal error');
t.ok(resumed, 'emits errors only after it was resumed');
})
.on('data', function (data) {
t.equals(data, processedData, 'emits the buffered data');
t.ok(resumed, 'emits data only after it was resumed');
})
.pause()
api.processEntry(processedData);
api.handleError(nonfatalError);
api.handleFatalError(fatalError);
setTimeout(function () {
resumed = true;
api.stream.resume();
}, 1)
})
t.test('\n# when a stream is paused it stops walking the fs', function (t) {
var resumed = false,
mockedAPI = streamapi();
mockedAPI.processEntry = function (entry) {
if (!resumed) t.notOk(true, 'should not emit while paused')
t.ok(entry, 'emitted while resumed')
}.bind(mockedAPI.stream)
function wrapper () {
return mockedAPI
}
var readdirp = proxyquire('../readdirp', {'./stream-api': wrapper})
, stream = readdirp(opts())
.on('error', function (err) {
t.fail('should not throw error', err);
})
.on('end', function () {
t.end()
})
.pause();
setTimeout(function () {
resumed = true;
stream.resume();
}, 5)
})
t.test('\n# when a stream is destroyed, it emits "closed", but no longer emits "data", "warn" and "error"', function (t) {
var api = streamapi()
, fatalError = new Error('fatal!')
, nonfatalError = new Error('nonfatal!')
, processedData = 'some data'
, plan = 0;
t.plan(6)
var stream = api.stream
.on('warn', function (err) {
t.ok(!stream._destroyed, 'emits warning until destroyed');
})
.on('error', function (err) {
t.ok(!stream._destroyed, 'emits errors until destroyed');
})
.on('data', function (data) {
t.ok(!stream._destroyed, 'emits data until destroyed');
})
.on('close', function () {
t.ok(stream._destroyed, 'emits close when stream is destroyed');
})
api.processEntry(processedData);
api.handleError(nonfatalError);
api.handleFatalError(fatalError);
setTimeout(function () {
stream.destroy()
t.notOk(stream.readable, 'stream is no longer readable after it is destroyed')
api.processEntry(processedData);
api.handleError(nonfatalError);
api.handleFatalError(fatalError);
process.nextTick(function () {
t.pass('emits no more data, warn or error events after it was destroyed')
t.end();
})
}, 10)
})
})