Avoid warnings and fix small typo on SecurePassword.

activemodel/lib/active_model/secure_password.rb

@@ -62,9 +62,9 @@ def password=(unencrypted_password)
 
       private
         def password_must_be_strong
-          if @password.present?
-            errors.add(:password, "must be longer than 6 characters") unless @password.size > 6
-            errors.add(:password, "is a too weak and common") if WEAK_PASSWORDS.include?(@password)
+          if password.present?
+            errors.add(:password, "must be longer than 6 characters") unless password.size > 6
+            errors.add(:password, "is too weak and common") if WEAK_PASSWORDS.include?(password)
           end
         end
     end

activemodel/test/cases/secure_password_test.rb

@@ -34,11 +34,13 @@ class SecurePasswordTest < ActiveModel::TestCase
   end
   
   test "too weak passwords" do
-    @user.password = "123456"
+    @user.password = "012345"
     assert !@user.valid?
+    assert_equal ["must be longer than 6 characters"], @user.errors[:password]
 
     @user.password = "password"
     assert !@user.valid?
+    assert_equal ["is too weak and common"], @user.errors[:password]
     
     @user.password = "d9034rfjlakj34RR$!!"
     assert @user.valid?