symlinks.js
1 var path = require('path'); 2 var fs = require('fs'); 3 var test = require('tape'); 4 var map = require('array.prototype.map'); 5 var resolve = require('../'); 6 7 var symlinkDir = path.join(__dirname, 'resolver', 'symlinked', 'symlink'); 8 var packageDir = path.join(__dirname, 'resolver', 'symlinked', '_', 'node_modules', 'package'); 9 var modADir = path.join(__dirname, 'symlinks', 'source', 'node_modules', 'mod-a'); 10 var symlinkModADir = path.join(__dirname, 'symlinks', 'dest', 'node_modules', 'mod-a'); 11 try { 12 fs.unlinkSync(symlinkDir); 13 } catch (err) {} 14 try { 15 fs.unlinkSync(packageDir); 16 } catch (err) {} 17 try { 18 fs.unlinkSync(modADir); 19 } catch (err) {} 20 try { 21 fs.unlinkSync(symlinkModADir); 22 } catch (err) {} 23 24 try { 25 fs.symlinkSync('./_/symlink_target', symlinkDir, 'dir'); 26 } catch (err) { 27 // if fails then it is probably on Windows and lets try to create a junction 28 fs.symlinkSync(path.join(__dirname, 'resolver', 'symlinked', '_', 'symlink_target') + '\\', symlinkDir, 'junction'); 29 } 30 try { 31 fs.symlinkSync('../../package', packageDir, 'dir'); 32 } catch (err) { 33 // if fails then it is probably on Windows and lets try to create a junction 34 fs.symlinkSync(path.join(__dirname, '..', '..', 'package') + '\\', packageDir, 'junction'); 35 } 36 try { 37 fs.symlinkSync('../../source/node_modules/mod-a', symlinkModADir, 'dir'); 38 } catch (err) { 39 // if fails then it is probably on Windows and lets try to create a junction 40 fs.symlinkSync(path.join(__dirname, '..', '..', 'source', 'node_modules', 'mod-a') + '\\', symlinkModADir, 'junction'); 41 } 42 43 test('symlink', function (t) { 44 t.plan(2); 45 46 resolve('foo', { basedir: symlinkDir, preserveSymlinks: false }, function (err, res, pkg) { 47 t.error(err); 48 t.equal(res, path.join(__dirname, 'resolver', 'symlinked', '_', 'node_modules', 'foo.js')); 49 }); 50 }); 51 52 test('sync symlink when preserveSymlinks = true', function (t) { 53 t.plan(4); 54 55 resolve('foo', { basedir: symlinkDir }, function (err, res, pkg) { 56 t.ok(err, 'there is an error'); 57 t.notOk(res, 'no result'); 58 59 t.equal(err && err.code, 'MODULE_NOT_FOUND', 'error code matches require.resolve'); 60 t.equal( 61 err && err.message, 62 'Cannot find module \'foo\' from \'' + symlinkDir + '\'', 63 'can not find nonexistent module' 64 ); 65 }); 66 }); 67 68 test('sync symlink', function (t) { 69 var start = new Date(); 70 t.doesNotThrow(function () { 71 t.equal( 72 resolve.sync('foo', { basedir: symlinkDir, preserveSymlinks: false }), 73 path.join(__dirname, 'resolver', 'symlinked', '_', 'node_modules', 'foo.js') 74 ); 75 }); 76 t.ok(new Date() - start < 50, 'resolve.sync timedout'); 77 t.end(); 78 }); 79 80 test('sync symlink when preserveSymlinks = true', function (t) { 81 t.throws(function () { 82 resolve.sync('foo', { basedir: symlinkDir }); 83 }, /Cannot find module 'foo'/); 84 t.end(); 85 }); 86 87 test('sync symlink from node_modules to other dir when preserveSymlinks = false', function (t) { 88 var basedir = path.join(__dirname, 'resolver', 'symlinked', '_'); 89 var fn = resolve.sync('package', { basedir: basedir, preserveSymlinks: false }); 90 91 t.equal(fn, path.resolve(__dirname, 'resolver/symlinked/package/bar.js')); 92 t.end(); 93 }); 94 95 test('async symlink from node_modules to other dir when preserveSymlinks = false', function (t) { 96 t.plan(2); 97 var basedir = path.join(__dirname, 'resolver', 'symlinked', '_'); 98 resolve('package', { basedir: basedir, preserveSymlinks: false }, function (err, result) { 99 t.notOk(err, 'no error'); 100 t.equal(result, path.resolve(__dirname, 'resolver/symlinked/package/bar.js')); 101 }); 102 }); 103 104 test('packageFilter', function (t) { 105 function relative(x) { 106 return path.relative(__dirname, x); 107 } 108 109 function testPackageFilter(preserveSymlinks) { 110 return function (st) { 111 st.plan('is 1.x' ? 3 : 5); // eslint-disable-line no-constant-condition 112 113 var destMain = 'symlinks/dest/node_modules/mod-a/index.js'; 114 var destPkg = 'symlinks/dest/node_modules/mod-a/package.json'; 115 var sourceMain = 'symlinks/source/node_modules/mod-a/index.js'; 116 var sourcePkg = 'symlinks/source/node_modules/mod-a/package.json'; 117 var destDir = path.join(__dirname, 'symlinks', 'dest'); 118 119 /* eslint multiline-comment-style: 0 */ 120 /* v2.x will restore these tests 121 var packageFilterPath = []; 122 var actualPath = resolve.sync('mod-a', { 123 basedir: destDir, 124 preserveSymlinks: preserveSymlinks, 125 packageFilter: function (pkg, pkgfile, dir) { 126 packageFilterPath.push(pkgfile); 127 } 128 }); 129 st.equal( 130 relative(actualPath), 131 path.normalize(preserveSymlinks ? destMain : sourceMain), 132 'sync: actual path is correct' 133 ); 134 st.deepEqual( 135 map(packageFilterPath, relative), 136 map(preserveSymlinks ? [destPkg, destPkg] : [sourcePkg, sourcePkg], path.normalize), 137 'sync: packageFilter pkgfile arg is correct' 138 ); 139 */ 140 141 var asyncPackageFilterPath = []; 142 resolve( 143 'mod-a', 144 { 145 basedir: destDir, 146 preserveSymlinks: preserveSymlinks, 147 packageFilter: function (pkg, pkgfile) { 148 asyncPackageFilterPath.push(pkgfile); 149 } 150 }, 151 function (err, actualPath) { 152 st.error(err, 'no error'); 153 st.equal( 154 relative(actualPath), 155 path.normalize(preserveSymlinks ? destMain : sourceMain), 156 'async: actual path is correct' 157 ); 158 st.deepEqual( 159 map(asyncPackageFilterPath, relative), 160 map( 161 preserveSymlinks ? [destPkg, destPkg, destPkg] : [sourcePkg, sourcePkg, sourcePkg], 162 path.normalize 163 ), 164 'async: packageFilter pkgfile arg is correct' 165 ); 166 } 167 ); 168 }; 169 } 170 171 t.test('preserveSymlinks: false', testPackageFilter(false)); 172 173 t.test('preserveSymlinks: true', testPackageFilter(true)); 174 175 t.end(); 176 });