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1var path = require('path')
2
3var test = require('tap').test
4
5var readdir = require('graceful-fs').readdir
6var readdirSync = require('graceful-fs').readdirSync
7var rmdir = require('graceful-fs').rmdir
8var statSync = require('graceful-fs').statSync
9var writeFile = require('graceful-fs').writeFile
10var mkdirp = require('mkdirp')
11var mkdtemp = require('tmp').dir
12var tmpFile = require('tmp').file
13var EEXIST = require('errno').code.EEXIST
14var ENOTEMPTY = require('errno').code.ENOTEMPTY
15
16var requireInject = require('require-inject')
17var vacuum = requireInject('../vacuum.js', {
18  'graceful-fs': {
19    'lstat': require('graceful-fs').lstat,
20    'readdir': function (dir, cb) {
21      readdir(dir, function (err, files) {
22        // Simulate racy removal by creating a file after vacuum
23        // thinks the directory is empty
24        if (dir === partialPath && files.length === 0) {
25          tmpFile({dir: dir}, function (err, path, fd) {
26            if (err) throw err
27            cb(err, files)
28          })
29        } else {
30          cb(err, files)
31        }
32      })
33    },
34    'rmdir': function (dir, cb) {
35      rmdir(dir, function (err) {
36        // Force EEXIST error from rmdir if the directory is non-empty
37        var mockErr = EEXIST
38        if (err) {
39          if (err.code === ENOTEMPTY.code) {
40            err.code = err.errno = mockErr.code
41            err.message = mockErr.code + ': ' + mockErr.description + ', ' + err.syscall + ' \'' + dir + '\''
42          }
43        }
44        cb(err)
45      })
46    },
47    'unlink': require('graceful-fs').unlink
48  }
49})
50
51// CONSTANTS
52var TEMP_OPTIONS = {
53  unsafeCleanup: true,
54  mode: '0700'
55}
56var SHORT_PATH = path.join('i', 'am', 'a', 'path')
57var PARTIAL_PATH = path.join(SHORT_PATH, 'that', 'ends', 'at', 'a')
58var FULL_PATH = path.join(PARTIAL_PATH, 'file')
59
60var messages = []
61function log () { messages.push(Array.prototype.slice.call(arguments).join(' ')) }
62
63var testBase, partialPath, fullPath
64test('xXx setup xXx', function (t) {
65  mkdtemp(TEMP_OPTIONS, function (er, tmpdir) {
66    t.ifError(er, 'temp directory exists')
67
68    testBase = path.resolve(tmpdir, SHORT_PATH)
69    partialPath = path.resolve(tmpdir, PARTIAL_PATH)
70    fullPath = path.resolve(tmpdir, FULL_PATH)
71
72    mkdirp(partialPath, function (er) {
73      t.ifError(er, 'made test path')
74
75      writeFile(fullPath, new Buffer('hi'), function (er) {
76        t.ifError(er, 'made file')
77
78        t.end()
79      })
80    })
81  })
82})
83
84test('racy removal should quit gracefully', function (t) {
85  vacuum(fullPath, {purge: false, base: testBase, log: log}, function (er) {
86    t.ifError(er, 'cleaned up to base')
87
88    t.equal(messages.length, 3, 'got 2 removal & 1 quit message')
89    t.equal(messages[2], 'quitting because new (racy) entries in ' + partialPath)
90
91    var stat
92    var verifyPath = fullPath
93
94    function verify () { stat = statSync(verifyPath) }
95
96    // handle the file separately
97    t.throws(verify, verifyPath + ' cannot be statted')
98    t.notOk(stat && stat.isFile(), verifyPath + ' is totally gone')
99    verifyPath = path.dirname(verifyPath)
100
101    for (var i = 0; i < 4; i++) {
102      t.doesNotThrow(function () {
103        stat = statSync(verifyPath)
104      }, verifyPath + ' can be statted')
105      t.ok(stat && stat.isDirectory(), verifyPath + ' is still a directory')
106      verifyPath = path.dirname(verifyPath)
107    }
108
109    t.doesNotThrow(function () {
110      stat = statSync(testBase)
111    }, testBase + ' can be statted')
112    t.ok(stat && stat.isDirectory(), testBase + ' is still a directory')
113
114    var files = readdirSync(testBase)
115    t.equal(files.length, 1, 'base directory untouched')
116
117    t.end()
118  })
119})
120