spec: add account calendar auto subscribe tests

This is one of a series of test patchsets to augment the unit tests
for validating new UI for auto-subscription of accound calendars.

Closes LF-257

Test Plan:

Passes Jenkins

Change-Id: I8950c6cef803e455cff5d353d0260b6807b80bab
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/318193
Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com>
Reviewed-by: Ed Schiebel <eschiebel@instructure.com>
QA-Review: Ed Schiebel <eschiebel@instructure.com>
Product-Review: Robin Kuss <rkuss@instructure.com>

spec/selenium/calendar/calendar2_other_calendars_spec.rb

@@ -270,5 +270,30 @@ describe "calendar2" do
         expect(event_popover_content).not_to contain_css("a")
       end
     end
+
+    context "auto subscription for an account calendar" do
+      before :once do
+        @subaccount1.account_calendar_subscription_type = "auto"
+        @subaccount1.save!
+      end
+
+      it "cannot uncheck auto-subscribed calendar on selection modal" do
+        @student.set_preference(:enabled_account_calendars, @subaccount1.id)
+        user_session(@student)
+        get "/calendar2"
+
+        open_other_calendars_modal
+        expect(f(account_calendar_checkbox_selector(@subaccount1.id))).to be_disabled
+      end
+
+      it "can uncheck auto-subscribed calendar for viewing on calendar" do
+        @student.set_preference(:enabled_account_calendars, @subaccount1.id)
+        user_session(@student)
+        get "/calendar2"
+
+        account_calendar_available_list_item.click
+        expect(account_calendar_available_list_item).not_to be_checked
+      end
+    end
   end
 end

spec/selenium/calendar/pages/calendar_other_calendars_page.rb

@@ -89,6 +89,10 @@ module CalendarOtherCalendarsPage
     "#{account_calendars_list_selector} > li"
   end
 
+  def account_calendar_available_list_item_selector
+    "#other-calendars-context-list .context_list_context .context-list-toggle-box"
+  end
+
   def event_popover_header_selector
     ".event-details-header"
   end
@@ -170,6 +174,10 @@ module CalendarOtherCalendarsPage
     ffj(account_calendar_list_items_selector)
   end
 
+  def account_calendar_available_list_item
+    f(account_calendar_available_list_item_selector)
+  end
+
   def event_popover_title
     f(event_popover_header_selector)
   end