Implemented User Model validation and tested in user_spec.rb, the tes…

…ts using users factory

app/models/user.rb

@@ -2,4 +2,11 @@ class User < ActiveRecord::Base
   has_secure_password
 
   attr_accessible :email, :password, :password_confirmation, :full_name
+  attr_readonly :email
+
+  validates :email, presence: true, uniqueness: true,
+            format: { with: /\A[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]+\z/,
+                      message: 'The format of Email is invalid'}
+  validates :password, presence: true, length: { minimum: 8 }
+  validates :full_name, presence: true
 end

spec/factories/users.rb

@@ -1,8 +1,8 @@
-# Read about factories at https://github.com/thoughtbot/factory_girl
-
 FactoryGirl.define do
   factory :user do
-    email "MyString"
-    password_digest "MyString"
+    email 'xajler@gmail.com'
+    password 'x1234567'
+    password_digest 'x1234567'
+    full_name 'Kornelije Sajler'
   end
 end

spec/models/user_spec.rb

@@ -1,5 +1,57 @@
 require 'spec_helper'
 
 describe User do
-  pending "add some examples to (or delete) #{__FILE__}"
+  let :user do
+    build :user
+  end
+
+  subject do
+   user
+  end
+
+  context 'is invalid' do
+    it 'when required #email is not given' do
+      user.email = ''
+      should_not be_valid
+    end
+
+    it 'when required #password is not given' do
+      user.password = ''
+      should_not be_valid
+    end
+
+    it 'when required #full_name is not given' do
+      user.full_name = ''
+      should_not be_valid
+    end
+
+    it 'when #email is not unique' do
+      user.save
+      user1 = build :user
+      user1.save
+
+      user1.should_not be_valid
+      user1.errors.full_messages[0].should match 'Email has already been taken'
+    end
+
+    it 'when #email format is not valid' do
+      user.email = 'invalid mail'
+      should_not be_valid
+    end
+
+    it 'when #password is not at least 8 characters' do
+      user.password = 'abc123'
+      should_not be_valid
+    end
+  end
+
+  it '#email must not ever change after it is created' do
+    user.save
+    user.update_attributes email: 'ksajler@gmail.com'
+    user.reload.email.should match 'xajler@gmail.com'
+  end
+
+  it 'is valid' do
+    should be_valid
+  end
 end