diff --git a/lib/models/post.js b/lib/models/post.js
index f574b4f2d7..558faeab1c 100644
--- a/lib/models/post.js
+++ b/lib/models/post.js
@@ -47,7 +47,8 @@ module.exports = function(ctx) {
   });
 
   Post.virtual('permalink').get(function() {
-    return ctx.config.url + '/' + this.path;
+    var url_for = ctx.extend.helper.get('url_for');
+    return ctx.config.url + url_for.call(ctx, this.path);
   });
 
   Post.virtual('full_source').get(function() {
diff --git a/test/scripts/helpers/list_archives.js b/test/scripts/helpers/list_archives.js
index fc1371dc0b..b1e7179d9d 100644
--- a/test/scripts/helpers/list_archives.js
+++ b/test/scripts/helpers/list_archives.js
@@ -22,12 +22,14 @@ describe('list_archives', function() {
   }
 
   before(function() {
-    return Post.insert([
-      {source: 'foo', slug: 'foo', date: new Date(2014, 1, 2)},
-      {source: 'bar', slug: 'bar', date: new Date(2013, 5, 6)},
-      {source: 'baz', slug: 'baz', date: new Date(2013, 9, 10)},
-      {source: 'boo', slug: 'boo', date: new Date(2013, 5, 8)}
-    ]).then(function() {
+    return hexo.init().then(function() {
+      return Post.insert([
+        {source: 'foo', slug: 'foo', date: new Date(2014, 1, 2)},
+        {source: 'bar', slug: 'bar', date: new Date(2013, 5, 6)},
+        {source: 'baz', slug: 'baz', date: new Date(2013, 9, 10)},
+        {source: 'boo', slug: 'boo', date: new Date(2013, 5, 8)}
+      ]);
+    }).then(function() {
       resetLocals();
     });
   });
diff --git a/test/scripts/helpers/list_categories.js b/test/scripts/helpers/list_categories.js
index 39a549c8d2..45d89671c1 100644
--- a/test/scripts/helpers/list_categories.js
+++ b/test/scripts/helpers/list_categories.js
@@ -18,12 +18,14 @@ describe('list_categories', function() {
   var listCategories = require('../../../lib/plugins/helper/list_categories').bind(ctx);
 
   before(function() {
-    return Post.insert([
-      {source: 'foo', slug: 'foo'},
-      {source: 'bar', slug: 'bar'},
-      {source: 'baz', slug: 'baz'},
-      {source: 'boo', slug: 'boo'}
-    ]).then(function(posts) {
+    return hexo.init().then(function() {
+      return Post.insert([
+        {source: 'foo', slug: 'foo'},
+        {source: 'bar', slug: 'bar'},
+        {source: 'baz', slug: 'baz'},
+        {source: 'boo', slug: 'boo'}
+      ]);
+    }).then(function(posts) {
       return Promise.each([
         ['baz'],
         ['baz', 'bar'],
diff --git a/test/scripts/helpers/list_posts.js b/test/scripts/helpers/list_posts.js
index 0533570a4b..15dd7850a2 100644
--- a/test/scripts/helpers/list_posts.js
+++ b/test/scripts/helpers/list_posts.js
@@ -18,12 +18,12 @@ describe('list_posts', function() {
   hexo.config.permalink = ':title/';
 
   before(function() {
-    return Post.insert([
-      {source: 'foo', slug: 'foo', title: 'Its', date: 1e8},
-      {source: 'bar', slug: 'bar', title: 'Chemistry', date: 1e8 + 1},
-      {source: 'baz', slug: 'baz', title: 'Bitch', date: 1e8 - 1}
-    ]).then(function() {
-      return hexo.init();
+    return hexo.init().then(function() {
+      return Post.insert([
+        {source: 'foo', slug: 'foo', title: 'Its', date: 1e8},
+        {source: 'bar', slug: 'bar', title: 'Chemistry', date: 1e8 + 1},
+        {source: 'baz', slug: 'baz', title: 'Bitch', date: 1e8 - 1}
+      ]);
     }).then(function() {
       hexo.locals.invalidate();
       ctx.site = hexo.locals.toObject();
diff --git a/test/scripts/helpers/list_tags.js b/test/scripts/helpers/list_tags.js
index 4564051b3b..4c00951b0a 100644
--- a/test/scripts/helpers/list_tags.js
+++ b/test/scripts/helpers/list_tags.js
@@ -18,12 +18,14 @@ describe('list_tags', function() {
   var listTags = require('../../../lib/plugins/helper/list_tags').bind(ctx);
 
   before(function() {
-    return Post.insert([
-      {source: 'foo', slug: 'foo'},
-      {source: 'bar', slug: 'bar'},
-      {source: 'baz', slug: 'baz'},
-      {source: 'boo', slug: 'boo'}
-    ]).then(function(posts) {
+    return hexo.init().then(function() {
+      return Post.insert([
+        {source: 'foo', slug: 'foo'},
+        {source: 'bar', slug: 'bar'},
+        {source: 'baz', slug: 'baz'},
+        {source: 'boo', slug: 'boo'}
+      ]);
+    }).then(function(posts) {
       // TODO: Warehouse needs to add a mutex lock when writing data to avoid data sync problem
       return Promise.each([
         ['foo'],
diff --git a/test/scripts/helpers/tagcloud.js b/test/scripts/helpers/tagcloud.js
index 60120095d9..66bdfdb8ff 100644
--- a/test/scripts/helpers/tagcloud.js
+++ b/test/scripts/helpers/tagcloud.js
@@ -18,12 +18,14 @@ describe('tagcloud', function() {
   var tagcloud = require('../../../lib/plugins/helper/tagcloud').bind(ctx);
 
   before(function() {
-    return Post.insert([
-      {source: 'foo', slug: 'foo'},
-      {source: 'bar', slug: 'bar'},
-      {source: 'baz', slug: 'baz'},
-      {source: 'boo', slug: 'boo'}
-    ]).then(function(posts) {
+    return hexo.init().then(function() {
+      return Post.insert([
+        {source: 'foo', slug: 'foo'},
+        {source: 'bar', slug: 'bar'},
+        {source: 'baz', slug: 'baz'},
+        {source: 'boo', slug: 'boo'}
+      ]);
+    }).then(function(posts) {
       // TODO: Warehouse needs to add a mutex lock when writing data to avoid data sync problem
       return Promise.each([
         ['bcd'],
diff --git a/test/scripts/models/post.js b/test/scripts/models/post.js
index 013d985807..e336651ec0 100644
--- a/test/scripts/models/post.js
+++ b/test/scripts/models/post.js
@@ -77,6 +77,7 @@ describe('Post', function() {
   });
 
   it('permalink - virtual', function() {
+    hexo.config.root = '/';
     return Post.insert({
       source: 'foo.md',
       slug: 'bar'
@@ -86,6 +87,17 @@ describe('Post', function() {
     });
   });
 
+  it('permalink_prefix - virtual', function() {
+    hexo.config.root = '/root/';
+    return Post.insert({
+      source: 'foo.md',
+      slug: 'bar'
+    }).then(function(data) {
+      data.permalink.should.eql(hexo.config.url + '/root/' + data.path);
+      return Post.removeById(data._id);
+    });
+  });
+
   it('full_source - virtual', function() {
     return Post.insert({
       source: 'foo.md',