add tests for digester

package.json

@@ -9,7 +9,8 @@
     "vows": "~0.7.0",
     "mocha": "~1.7.4",
     "supertest": "~0.5.1",
-    "express": "~2.5.11"
+    "express": "~2.5.11",
+    "should": "~1.2.1"
   },
   "scripts": {
     "test": "./node_modules/.bin/mocha --reporter spec --bail"
@@ -21,4 +22,4 @@
     "send": "~0.1.0",
     "mkdirp": "~0.3.4"
   }
-}
+}

src/digester.js

@@ -32,20 +32,28 @@ function routeName(entry) {
 digester.process = function (opts, callback) {
   var root = opts.root || '.';
   var vdir = opts.vdir || '/images/';
+  var filter   = opts.fileFilter || ['*.gif', '*.jpg', '*.jpeg', '*.png'];
+  var silent   = opts.silent;
   var strategy = selectStrategy(opts);
-  var start = Date.now();
-  var base = process.cwd();
+  var start    = Date.now();
+  var base     = process.cwd();
 
   vdir = url.parse(vdir);
 
-  readdirp({root: root}, function (err, tree) {
+  function log () {
+    if (!silent) {
+      console.log.apply(null, Array.prototype.slice.call(arguments));
+    }
+  }
+
+  readdirp({root: root, fileFilter: filter}, function (err, tree) {
     if (err) {
       return callback(err);
     }
 
     var processed = [];
     var entries = tree.files.filter(notHidden).map(toPaths);
-    console.log('processing %d file(s)', entries.length);
+    log('processing %d file(s)', entries.length);
 
     async.forEachLimit(
       entries,
@@ -68,7 +76,7 @@ digester.process = function (opts, callback) {
     }
 
     function processEntry(entry, done) {
-      console.log('   \x1b[36mprocess\x1b[0m : ' + entry.key);
+      log('   \x1b[36mprocess\x1b[0m : ' + entry.key);
 
       strategy(entry, function (err, entry) {
         if (!err) {
@@ -88,10 +96,10 @@ digester.process = function (opts, callback) {
             entry.route = routeName(entry);
             return entry;
           })
-          .values();
+          .value();
 
         var delay = Date.now() - start;
-        console.log('processed %d file(s) in %d ms', entries.length, delay);
+        log('processed %d file(s) in %d ms', entries.length, delay);
 
         return callback(null, config);
       }

test/digester.js

@@ -0,0 +1,65 @@
+var vows   = require('should');
+var path   = require('path');
+
+describe('Digester', function () {
+  var digester = require('../src/digester');
+
+  describe('digest directory', function () {
+    var entries, error;
+
+    before(function (done) {
+      var opts = {
+        root:       __dirname,
+        fileFilter: ["*.gif"],
+        silent:     true
+      };
+
+      digester.process(opts, cb);
+
+      function cb (err, res) {
+        error = err;
+        entries = res;
+        done();
+      }
+    });
+
+    it('entries should be an array', function () {
+      entries.should.be.an.instanceOf(Array);
+    });
+
+    it('entries should be .gif', function () {
+      entries.forEach(isGif);
+
+      function isGif(e) {
+        path.extname(e.fullPath).should.equal(".gif");
+      }
+    });
+
+    it('entries should sorted by fullPath', function () {
+      var paths = entries.map(toPath).sort();
+
+      entries.forEach(checkSort);
+
+      function toPath(e) {
+        return e.fullPath;
+      }
+
+      function checkSort(e, i, arr) {
+        e.fullPath.should.equal(paths[i]);
+      }
+    });
+
+    it('entries should have properties', function () {
+      entries.forEach(verify);
+
+      function verify (e) {
+        e.should.have.property('fullPath');
+        e.should.have.property('key');
+        e.should.have.property('url');
+        e.should.have.property('mtime');
+        e.should.have.property('digest');
+        e.should.have.property('route');
+      }
+    });
+  });
+});