Fix #247 - sh.cwd() not updating cwd on success, with test.

src/shell/shell.js

@@ -36,7 +36,7 @@ function Shell(fs, options) {
    * we can access cwd without exposing it externally.
    */
   this.cd = function(path, callback) {
-    path = Path.resolve(this.cwd, path);
+    path = Path.resolve(cwd, path);
     // Make sure the path actually exists, and is a dir
     fs.stat(path, function(err, stats) {
       if(err) {

tests/bugs/issue247.js

@@ -0,0 +1,36 @@
+var Filer = require('../..');
+var util = require('../lib/test-utils.js');
+var expect = require('chai').expect;
+
+describe('sh.cd doesn\'t seem to be working from a relative path if I am one or more folders deep, #247', function() {
+  beforeEach(util.setup);
+  afterEach(util.cleanup);
+
+  it('should properly deal with relative paths missing ./ and ../', function(done) {
+    var fs = util.fs();
+    var sh = fs.Shell();
+
+    sh.mkdirp('/home/scott', function(err) {
+      if(err) throw err;
+
+      sh.cd('/', function(err) {
+        if(err) throw err;
+
+        expect(sh.pwd()).to.equal('/');
+
+        sh.cd('home', function(err) {
+          if(err) throw err;
+
+          expect(sh.pwd()).to.equal('/home');
+
+          sh.cd('scott', function(err) {
+            if(err) throw err;
+
+            expect(sh.pwd()).to.equal('/home/scott');
+            done();
+          });
+        });
+      });
+    });
+  });
+});

tests/index.js

@@ -69,3 +69,4 @@ require("./bugs/issue105");
 require("./bugs/issue106");
 require("./bugs/issue239");
 require("./bugs/ls-depth-bug");
+require("./bugs/issue247.js");