diff --git a/core/router/admin.coffee b/core/router/admin.coffee
index 39a2fb3..7e58c63 100644
--- a/core/router/admin.coffee
+++ b/core/router/admin.coffee
@@ -1,6 +1,5 @@
 {express, async, _} = app.libs
 {requireAdminAuthenticate} = app.middleware
-{plaggable} = app
 {Account, Ticket, Financials, CouponCode} = app.models
 
 module.exports = exports = express.Router()
@@ -56,30 +55,28 @@ exports.get '/ticket', (req, res) ->
     res.render 'ticket/list', result
 
 exports.post '/confirm_payment', (req, res) ->
-  Account.findOne req.body.account_id, (err, account) ->
+  Account.findById req.body.account_id, (err, account) ->
     unless account
       return res.error 'account_not_exist'
 
-    amount = parseFloat req.body.amount
-
-    if _.isNaN amount
+    unless _.isFinite req.body.amount
       return res.error 'invalid_amount'
 
-    account.incBalance amount, 'deposit',
+    account.incBalance req.body.amount, 'deposit',
       type: req.body.type
       order_id: req.body.order_id
     , ->
       res.json {}
 
 exports.post '/delete_account', (req, res) ->
-  Account.findOne req.body.account_id, (err, account) ->
+  Account.findById req.body.account_id, (err, account) ->
     unless account
       return res.error 'account_not_exist'
 
     unless _.isEmpty account.billing.plans
       return res.error 'already_in_plan'
 
-    unless account.attribute.balance <= 0
+    unless account.billing.balance <= 0
       return res.error 'balance_not_empty'
 
     Account.findByIdAndRemove account._id, ->
@@ -88,5 +85,5 @@ exports.post '/delete_account', (req, res) ->
 exports.post '/generate_coupon_code', (req, res) ->
   coupon_code = _.pick req.body, 'expired', 'available_times', 'type', 'meta'
 
-  CouponCode.createCodes coupon_code, req.body.count, (err, coupon_codes) ->
+  CouponCode.createCodes coupon_code, req.body.count, (err, coupon_codes...) ->
     res.json coupon_codes
diff --git a/core/test/model/CouponCode.test.coffee b/core/test/model/CouponCode.test.coffee
index 51507ce..edce46c 100644
--- a/core/test/model/CouponCode.test.coffee
+++ b/core/test/model/CouponCode.test.coffee
@@ -39,7 +39,7 @@ describe 'model/CouponCode', ->
         coupon1.type.should.be.equal 'amount'
         coupon1.meta.amount.should.be.equal 4
 
-        coupon1.code.should.not.equal coupon2
+        coupon1.code.should.not.equal coupon2.code
 
         for coupon in coupons
           created_objects.couponcodes.push coupon._id
diff --git a/core/test/router/admin.test.coffee b/core/test/router/admin.test.coffee
index 5625330..1a80038 100644
--- a/core/test/router/admin.test.coffee
+++ b/core/test/router/admin.test.coffee
@@ -4,6 +4,7 @@ describe 'router/admin', ->
 
   agent = null
   csrf_token = null
+  account_id = null
 
   before ->
     {utils} = app
@@ -37,6 +38,16 @@ describe 'router/admin', ->
             res.body.token.should.be.exist
             done err
 
+  it 'should create a account for test', (done) ->
+    Account.register
+      username: "account#{utils.randomString(10).toLowerCase()}"
+      email: "#{utils.randomString 20}@gmail.com"
+      password: utils.randomString 20
+    , (err, account) ->
+      created_objects.accounts.push account._id
+      account_id = account._id
+      done err
+
   it 'GET / when no permission', (done) ->
     namespace.accountRouter.agent
     .get '/admin'
@@ -53,8 +64,77 @@ describe 'router/admin', ->
     .expect 200
     .end done
 
-  it 'POST confirm_payment'
+  it 'POST confirm_payment', (done) ->
+    agent.post '/admin/confirm_payment'
+    .send
+      csrf_token: csrf_token
+      account_id: account_id
+      amount: 10
+      order_id: 'ID'
+    .expect 200
+    .end done
 
-  it 'POST delete_account'
+  it 'POST confirm_payment with account_id not exist', (done) ->
+    agent.post '/admin/confirm_payment'
+    .send
+      csrf_token: csrf_token
+      account_id: '14534f8a3d9064cb116c315d'
+      amount: 10
+      order_id: 'ID'
+    .expect 400
+    .end (err, res) ->
+      res.body.error.should.be.equal 'account_not_exist'
+      done err
 
-  it 'POST generate_coupon_code'
+  it 'POST confirm_payment with invalid amount', (done) ->
+    agent.post '/admin/confirm_payment'
+    .send
+      csrf_token: csrf_token
+      account_id: account_id
+      amount: '1x'
+    .expect 400
+    .end (err, res) ->
+      res.body.error.should.be.equal 'invalid_amount'
+      done err
+
+  it 'POST delete_account', (done) ->
+    Account.findByIdAndUpdate account_id,
+      $set:
+        'billing.balance': 0
+    , ->
+      agent.post '/admin/delete_account'
+      .send
+        csrf_token: csrf_token
+        account_id: account_id
+      .expect 200
+      .end (err) ->
+        Account.findById account_id, (mongo_err, account) ->
+          expect(mongo_err).to.not.exist
+          expect(account).to.not.exist
+          done err
+
+  it 'POST generate_coupon_code', (done) ->
+    agent.post '/admin/generate_coupon_code'
+    .send
+      csrf_token: csrf_token
+      count: 2
+      available_times: 3
+      type: 'amount'
+      meta:
+        category: 'test'
+        amount: 4
+    .expect 200
+    .end (err, res) ->
+      res.body.should.have.length 2
+      [coupon1, coupon2] = res.body
+
+      coupon1.available_times.should.be.equal 3
+      coupon1.type.should.be.equal 'amount'
+      coupon1.meta.amount.should.be.equal 4
+
+      coupon1.code.should.not.equal coupon2.code
+
+      created_objects.couponcodes.push ObjectId coupon1._id
+      created_objects.couponcodes.push ObjectId coupon2._id
+
+      done err