Add tests for redeem invite feature

spec/models/invite_spec.rb

@@ -349,4 +349,24 @@ describe Invite do
       result.should be_valid
     end
   end
+
+  describe '.redeem_from_email' do
+    let(:inviter) { Fabricate(:user) }
+    let(:invite) { Fabricate(:invite, invited_by: inviter, email: 'test@example.com', user_id: nil) }
+    let(:user) { Fabricate(:user, email: invite.email) }
+
+    it 'redeems the invite from email' do
+      result = Invite.redeem_from_email(user.email)
+      invite.reload
+      invite.should be_redeemed
+    end
+
+    it 'does not redeem the invite if email does not match' do
+      result = Invite.redeem_from_email('test24@example.com')
+      invite.reload
+      invite.should_not be_redeemed
+    end
+
+  end
+
 end