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var common = require('../common');
var assert = require('assert');
var fs = require('fs');
var path = require('path');
var exec = require('child_process').exec;
var async_completed = 0, async_expected = 0, unlink = [];
function tmp(p) {
return path.join(common.tmpDir, p);
}
var fixturesAbsDir;
var tmpAbsDir;
function getAbsPaths(cb) {
var failed = false;
var did = 0;
var expect = 2;
bashRealpath(common.fixturesDir, function(er, path) {
if (failed) return;
if (er) return cb(failed = er);
fixturesAbsDir = path;
did++;
if (did === expect) cb();
});
bashRealpath(common.tmpDir, function(er, path) {
if (failed) return;
if (er) return cb(failed = er);
tmpAbsDir = path;
did++;
if (did === expect) cb();
});
}
function asynctest(testBlock, args, callback, assertBlock) {
async_expected++;
testBlock.apply(testBlock, args.concat(function(err) {
var ignoreError = false;
if (assertBlock) {
try {
ignoreError = assertBlock.apply(assertBlock, arguments);
}
catch (e) {
err = e;
}
}
async_completed++;
callback(ignoreError ? null : err);
}));
}
function bashRealpath(path, callback) {
exec("cd '" + path.replace("'", "\\'") + "' && pwd -P", function(err, o) {
callback(err, o.trim());
});
}
// sub-tests:
function test_simple_relative_symlink(callback) {
console.log('test_simple_relative_symlink');
var entry = common.tmpDir + '/symlink',
expected = common.tmpDir + '/cycles/root.js';
[
[entry, '../tmp/cycles/root.js']
].forEach(function(t) {
try {fs.unlinkSync(t[0]);}catch (e) {}
fs.symlinkSync(t[1], t[0]);
unlink.push(t[0]);
});
var result = fs.realpathSync(entry);
assert.equal(result, expected,
'got ' + common.inspect(result) + ' expected ' +
common.inspect(expected));
asynctest(fs.realpath, [entry], callback, function(err, result) {
assert.equal(result, expected,
'got ' +
common.inspect(result) +
' expected ' +
common.inspect(expected));
});
}
function test_simple_absolute_symlink(callback) {
console.log('test_simple_absolute_symlink');
var entry = tmpAbsDir + '/symlink',
expected = fixturesAbsDir + '/nested-index/one/index.js';
[
[entry, expected]
].forEach(function(t) {
try {fs.unlinkSync(t[0]);} catch (e) {}
fs.symlinkSync(t[1], t[0]);
unlink.push(t[0]);
});
var result = fs.realpathSync(entry);
assert.equal(result, expected,
'got ' +
common.inspect(result) +
' expected ' +
common.inspect(expected));
asynctest(fs.realpath, [entry], callback, function(err, result) {
assert.equal(result, expected,
'got ' +
common.inspect(result) +
' expected ' +
common.inspect(expected));
});
}
function test_deep_relative_file_symlink(callback) {
console.log('test_deep_relative_file_symlink');
var expected = path.join(common.fixturesDir, 'cycles', 'root.js');
var linkData1 = '../../cycles/root.js';
var linkPath1 = path.join(common.fixturesDir,
'nested-index', 'one', 'symlink1.js');
try {fs.unlinkSync(linkPath1);} catch (e) {}
fs.symlinkSync(linkData1, linkPath1);
var linkData2 = '../one/symlink1.js';
var entry = path.join(common.fixturesDir,
'nested-index', 'two', 'symlink1-b.js');
try {fs.unlinkSync(entry);} catch (e) {}
fs.symlinkSync(linkData2, entry);
unlink.push(linkPath1);
unlink.push(entry);
assert.equal(fs.realpathSync(entry), expected);
asynctest(fs.realpath, [entry], callback, function(err, result) {
assert.equal(result, expected,
'got ' +
common.inspect(result) +
' expected ' +
common.inspect(expected));
});
}
function test_deep_relative_dir_symlink(callback) {
console.log('test_deep_relative_dir_symlink');
var expected = path.join(common.fixturesDir, 'cycles', 'folder');
var linkData1b = '../../cycles/folder';
var linkPath1b = path.join(common.fixturesDir,
'nested-index', 'one', 'symlink1-dir');
try {fs.unlinkSync(linkPath1b);} catch (e) {}
fs.symlinkSync(linkData1b, linkPath1b);
var linkData2b = '../one/symlink1-dir';
var entry = path.join(common.fixturesDir,
'nested-index', 'two', 'symlink12-dir');
try {fs.unlinkSync(entry);} catch (e) {}
fs.symlinkSync(linkData2b, entry);
unlink.push(linkPath1b);
unlink.push(entry);
assert.equal(fs.realpathSync(entry), expected);
asynctest(fs.realpath, [entry], callback, function(err, result) {
assert.equal(result, expected,
'got ' +
common.inspect(result) +
' expected ' +
common.inspect(expected));
});
}
function test_cyclic_link_protection(callback) {
console.log('test_cyclic_link_protection');
var entry = common.tmpDir + '/cycles/realpath-3a';
[
[entry, '../cycles/realpath-3b'],
[common.tmpDir + '/cycles/realpath-3b', '../cycles/realpath-3c'],
[common.tmpDir + '/cycles/realpath-3c', '../cycles/realpath-3a']
].forEach(function(t) {
try {fs.unlinkSync(t[0]);} catch (e) {}
fs.symlinkSync(t[1], t[0]);
unlink.push(t[0]);
});
assert.throws(function() { fs.realpathSync(entry); });
asynctest(fs.realpath, [entry], callback, function(err, result) {
assert.ok(err && true);
return true;
});
}
function test_cyclic_link_overprotection(callback) {
console.log('test_cyclic_link_overprotection');
var cycles = common.tmpDir + '/cycles';
var expected = fs.realpathSync(cycles);
var folder = cycles + '/folder';
var link = folder + '/cycles';
var testPath = cycles;
for (var i = 0; i < 10; i++) testPath += '/folder/cycles';
try {fs.unlinkSync(link)} catch (ex) {}
fs.symlinkSync(cycles, link);
unlink.push(link);
assert.equal(fs.realpathSync(testPath), expected);
asynctest(fs.realpath, [testPath], callback, function(er, res) {
assert.equal(res, expected);
});
}
function test_relative_input_cwd(callback) {
console.log('test_relative_input_cwd');
var p = common.tmpDir.lastIndexOf('/');
var entrydir = common.tmpDir.substr(0, p);
var entry = common.tmpDir.substr(p + 1) + '/cycles/realpath-3a';
var expected = common.tmpDir + '/cycles/root.js';
[
[entry, '../cycles/realpath-3b'],
[common.tmpDir + '/cycles/realpath-3b', '../cycles/realpath-3c'],
[common.tmpDir + '/cycles/realpath-3c', 'root.js']
].forEach(function(t) {
var fn = t[0];
if (fn.charAt(0) !== '/') fn = entrydir + '/' + fn;
try {fs.unlinkSync(fn);} catch (e) {}
fs.symlinkSync(t[1], fn);
unlink.push(fn);
});
var origcwd = process.cwd();
process.chdir(entrydir);
assert.equal(fs.realpathSync(entry), expected);
asynctest(fs.realpath, [entry], callback, function(err, result) {
process.chdir(origcwd);
assert.equal(result, expected,
'got ' +
common.inspect(result) +
' expected ' +
common.inspect(expected));
return true;
});
}
function test_deep_symlink_mix(callback) {
console.log('test_deep_symlink_mix');
// todo: check to see that common.fixturesDir is not rooted in the
// same directory as our test symlink.
// obtain our current realpath using bash (so we can test ourselves)
/*
/tmp/node-test-realpath-f1 -> ../tmp/node-test-realpath-d1/foo
/tmp/node-test-realpath-d1 -> ../node-test-realpath-d2
/tmp/node-test-realpath-d2/foo -> ../node-test-realpath-f2
/tmp/node-test-realpath-f2
-> /node/test/fixtures/nested-index/one/realpath-c
/node/test/fixtures/nested-index/one/realpath-c
-> /node/test/fixtures/nested-index/two/realpath-c
/node/test/fixtures/nested-index/two/realpath-c -> ../../cycles/root.js
/node/test/fixtures/cycles/root.js (hard)
*/
var entry = tmp('node-test-realpath-f1');
try { fs.unlinkSync(tmp('node-test-realpath-d2/foo')); } catch (e) {}
try { fs.rmdirSync(tmp('node-test-realpath-d2')); } catch (e) {}
fs.mkdirSync(tmp('node-test-realpath-d2'), 0700);
try {
[
[entry, '../tmp/node-test-realpath-d1/foo'],
[tmp('node-test-realpath-d1'), '../tmp/node-test-realpath-d2'],
[tmp('node-test-realpath-d2/foo'), '../node-test-realpath-f2'],
[tmp('node-test-realpath-f2'), fixturesAbsDir +
'/nested-index/one/realpath-c'],
[fixturesAbsDir + '/nested-index/one/realpath-c', fixturesAbsDir +
'/nested-index/two/realpath-c'],
[fixturesAbsDir + '/nested-index/two/realpath-c',
'../../../tmp/cycles/root.js']
].forEach(function(t) {
//common.debug('setting up '+t[0]+' -> '+t[1]);
try { fs.unlinkSync(t[0]); } catch (e) {}
fs.symlinkSync(t[1], t[0]);
unlink.push(t[0]);
});
} finally {
unlink.push(tmp('node-test-realpath-d2'));
}
var expected = tmpAbsDir + '/cycles/root.js';
assert.equal(fs.realpathSync(entry), expected);
asynctest(fs.realpath, [entry], callback, function(err, result) {
assert.equal(result, expected,
'got ' +
common.inspect(result) +
' expected ' +
common.inspect(expected));
return true;
});
}
function test_non_symlinks(callback) {
console.log('test_non_symlinks');
var p = tmpAbsDir.lastIndexOf('/');
var entrydir = tmpAbsDir.substr(0, p);
var entry = tmpAbsDir.substr(p + 1) + '/cycles/root.js';
var expected = tmpAbsDir + '/cycles/root.js';
var origcwd = process.cwd();
process.chdir(entrydir);
assert.equal(fs.realpathSync(entry), expected);
asynctest(fs.realpath, [entry], callback, function(err, result) {
process.chdir(origcwd);
assert.equal(result, expected,
'got ' +
common.inspect(result) +
' expected ' +
common.inspect(expected));
return true;
});
}
var upone = path.join(process.cwd(), '..');
function test_escape_cwd(cb) {
console.log('test_escape_cwd');
asynctest(fs.realpath, ['..'], cb, function(er, uponeActual) {
assert.equal(upone, uponeActual,
'realpath("..") expected: ' + upone + ' actual:' + uponeActual);
});
}
var uponeActual = fs.realpathSync('..');
assert.equal(upone, uponeActual,
'realpathSync("..") expected: ' + upone + ' actual:' + uponeActual);
// absolute symlinks with children.
// .
// `-- a/
// |-- b/
// | `-- c/
// | `-- x.txt
// `-- link -> /tmp/node-test-realpath-abs-kids/a/b/
// realpath(root+'/a/link/c/x.txt') ==> root+'/a/b/c/x.txt'
function test_abs_with_kids(cb) {
console.log('test_abs_with_kids');
var root = tmpAbsDir + '/node-test-realpath-abs-kids';
function cleanup() {
['/a/b/c/x.txt',
'/a/link'
].forEach(function(file) {
try {fs.unlinkSync(root + file)} catch (ex) {}
});
['/a/b/c',
'/a/b',
'/a',
''
].forEach(function(folder) {
try {fs.rmdirSync(root + folder)} catch (ex) {}
});
}
function setup() {
cleanup();
['',
'/a',
'/a/b',
'/a/b/c'
].forEach(function(folder) {
console.log('mkdir ' + root + folder);
fs.mkdirSync(root + folder, 0700);
});
fs.writeFileSync(root + '/a/b/c/x.txt', 'foo');
fs.symlinkSync(root + '/a/b', root + '/a/link');
}
setup();
var linkPath = root + '/a/link/c/x.txt';
var expectPath = root + '/a/b/c/x.txt';
var actual = fs.realpathSync(linkPath);
// console.log({link:linkPath,expect:expectPath,actual:actual},'sync');
assert.equal(actual, expectPath);
asynctest(fs.realpath, [linkPath], cb, function(er, actual) {
// console.log({link:linkPath,expect:expectPath,actual:actual},'async');
assert.equal(actual, expectPath);
cleanup();
});
}
// ----------------------------------------------------------------------------
var tests = [
test_simple_relative_symlink,
test_simple_absolute_symlink,
test_deep_relative_file_symlink,
test_deep_relative_dir_symlink,
test_cyclic_link_protection,
test_cyclic_link_overprotection,
test_relative_input_cwd,
test_deep_symlink_mix,
test_non_symlinks,
test_escape_cwd,
test_abs_with_kids
];
var numtests = tests.length;
function runNextTest(err) {
if (err) throw err;
var test = tests.shift();
if (!test) console.log(numtests +
' subtests completed OK for fs.realpath');
else test(runNextTest);
}
getAbsPaths(function(er) {
if (er) throw er;
var tmpDirs = ['cycles', 'cycles/folder'];
tmpDirs.forEach(function(t) {
t = tmp(t);
var s;
try { s = fs.statSync(t); } catch (ex) {}
if (s) return;
fs.mkdirSync(t, 0700);
});
fs.writeFileSync(tmp('cycles/root.js'), "console.error('roooot!');");
runNextTest();
});
assert.equal('/', fs.realpathSync('/'));
fs.realpath('/', function(err, result) {
assert.equal(null, err);
assert.equal('/', result);
});
process.addListener('exit', function() {
unlink.forEach(function(path) { try {fs.unlinkSync(path);} catch (e) {} });
assert.equal(async_completed, async_expected);
});