Added tests and converted dictionary key generator to es6

test/key_generators/dictionary_spec.js

@@ -0,0 +1,33 @@
+/* global describe, it */
+
+const assert = require('assert');
+
+const fs = require('fs');
+
+const Generator = require('../../lib/key_generators/dictionary');
+
+describe('RandomKeyGenerator', function() {
+  describe('randomKey', function() {
+    it('should throw an error if given no options', () => {
+      assert.throws(() => {
+        new Generator();
+      }, Error);
+    });
+
+    it('should throw an error if given no path', () => {
+      assert.throws(() => {
+        new Generator({});
+      }, Error);
+    });
+
+    it('should return a key of the proper number of words from the given dictionary', () => {
+      const path = '/tmp/haste-server-test-dictionary';
+      const words = ['cat'];
+      fs.writeFileSync(path, words.join('\n'));
+
+      const gen = new Generator({path}, () => {
+        assert.equal('catcatcat', gen.createKey(3));
+      });
+    });
+  });
+});