use user host url for summary message links, fixes #4455

Change-Id: Iddfd3b9c72cd9367b5bcb22928de3adfe795c4e8
Reviewed-on: https://gerrit.instructure.com/3440
Reviewed-by: Zach Wily <zach@instructure.com>
Tested-by: Hudson <hudson@instructure.com>

app/messages/summaries.email.erb

@@ -1,5 +1,5 @@
 <% define_content :link do %>
-  http://<%= HostUrl.default_host %>
+  http://<%= HostUrl.context_host(user.pseudonym.try(:account)) %>
 <% end %>
 
 <% define_content :subject do %>
@@ -25,4 +25,4 @@
 
 
 You can change your notification settings by visiting the following page:
-http://<%= HostUrl.default_host %>/profile/communication
+http://<%= HostUrl.context_host(user.pseudonym.try(:account))  %>/profile/communication

spec/factories/notification_factory.rb

@@ -17,7 +17,6 @@
 #
 
 def notification_model(opts={})
-  Notification.find(:all).each{|n| n.destroy }
   @notification = Notification.create!(notification_valid_attributes.merge(opts))
 end
 

spec/models/delayed_message_spec.rb

@@ -111,4 +111,19 @@ describe DelayedMessage do
       @delayed_message.state.should eql(:sent)
     end
   end
+
+  it "should use the user's main account domain for links" do
+    Canvas::MessageHelper.create_notification('Summary', 'Summaries', 0, '', 'Summaries')
+    account = Account.create!(:name => 'new acct')
+    user = user_with_pseudonym(:account => account)
+    user.pseudonym.update_attribute(:account, account)
+    user.pseudonym.account.should == account
+    HostUrl.should_receive(:context_host).with(user.pseudonym.account).at_least(:once).and_return("dm.dummy.test.host")
+    HostUrl.should_receive(:default_host).any_number_of_times.and_return("test.host")
+    dm = DelayedMessage.create!(:summary => "This is a notification", :context => Account.default, :communication_channel => user.communication_channel, :notification => notification_model)
+    DelayedMessage.summarize([dm])
+    message = Message.last
+    message.body.to_s.should_not match(%r{http://test.host/})
+    message.body.to_s.should match(%r{http://dm.dummy.test.host/})
+  end
 end