updated package.json

node_modules/ncp/test/fixtures/src/a

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+Hello world

node_modules/ncp/test/fixtures/src/b

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+Hello ncp

node_modules/ncp/test/fixtures/src/sub/a

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+Hello nodejitsu

node_modules/ncp/test/ncp-test.js

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+var assert = require('assert'),
+    path = require('path'),
+    rimraf = require('rimraf'),
+    vows = require('vows'),
+    readDirFiles = require('read-dir-files'),
+    ncp = require('../').ncp;
+
+var fixtures = path.join(__dirname, 'fixtures'),
+    src = path.join(fixtures, 'src'),
+    out = path.join(fixtures, 'out');
+
+vows.describe('ncp').addBatch({
+  'When copying a directory of files': {
+    topic: function () {
+      var cb = this.callback;
+      rimraf(out, function () {
+        ncp(src, out, cb);
+      });
+    },
+    'files should be copied': {
+      topic: function () {
+        var cb = this.callback;
+
+        readDirFiles(src, 'utf8', function (srcErr, srcFiles) {
+          readDirFiles(out, 'utf8', function (outErr, outFiles) {
+            cb(outErr, srcFiles, outFiles);
+          });
+        });
+      },
+      'and the destination should match the source': function (err, srcFiles, outFiles) {
+        assert.isNull(err);
+        assert.deepEqual(srcFiles, outFiles);
+      }
+    }
+  }
+}).addBatch({
+  'When copying files using filter': {
+    topic: function() {
+      var cb = this.callback;
+      var filter = function(name) {
+        return name.substr(name.length - 1) != 'a'
+      }
+      rimraf(out, function () {
+        ncp(src, out, {filter: filter}, cb);
+      });
+    },
+    'it should copy files': {
+      topic: function () {
+        var cb = this.callback;
+
+        readDirFiles(src, 'utf8', function (srcErr, srcFiles) {
+          function filter(files) {
+            for (var fileName in files) {
+              var curFile = files[fileName];
+              if (curFile instanceof Object)
+                return filter(curFile);
+              if (fileName.substr(fileName.length - 1) == 'a')
+                delete files[fileName];
+            }
+          }
+          filter(srcFiles);
+          readDirFiles(out, 'utf8', function (outErr, outFiles) {
+            cb(outErr, srcFiles, outFiles);
+          });
+        });
+      },
+      'and destination files should match source files that pass filter': function (err, srcFiles, outFiles) {
+        assert.isNull(err);
+        assert.deepEqual(srcFiles, outFiles);
+      }
+    }
+  }
+}).addBatch({
+   'When copying files using transform': {
+      'it should pass file descriptors along to transform functions': function() {
+         ncp(src, out, {
+            transform: function(read,write,file) {
+               assert.notEqual(file.name, undefined);
+               assert.strictEqual(typeof file.mode,'number');
+               read.pipe(write);
+            }
+         }, function(){});
+      }
+  }
+}).export(module);
+