adding tests

test/icalendar_test.exs

@@ -95,14 +95,46 @@ defmodule ICalendarTest do
            """
   end
 
+  test "Icalender.to_ics/1 with url" do
+    events = [
+      %ICalendar.Event{
+        summary: "Film with Amy and Adam",
+        dtstart: Timex.to_datetime({{2015, 12, 24}, {8, 30, 00}}),
+        dtend: Timex.to_datetime({{2015, 12, 24}, {8, 45, 00}}),
+        description: "Let's go see Star Wars, and have fun.",
+        location: "123 Fun Street, Toronto ON, Canada",
+        url: "http://example.com"
+      }
+    ]
+
+    ics = %ICalendar{events: events} |> ICalendar.to_ics()
+
+    assert ics == """
+           BEGIN:VCALENDAR
+           CALSCALE:GREGORIAN
+           VERSION:2.0
+           PRODID:-//Elixir ICalendar//Elixir ICalendar//EN
+           BEGIN:VEVENT
+           DESCRIPTION:Let's go see Star Wars\\, and have fun.
+           DTEND:20151224T084500Z
+           DTSTART:20151224T083000Z
+           LOCATION:123 Fun Street\\, Toronto ON\\, Canada
+           SUMMARY:Film with Amy and Adam
+           URL:http://example.com
+           END:VEVENT
+           END:VCALENDAR
+           """
+  end
+
   test "ICalender.to_ics/1 -> ICalendar.from_ics/1 and back again" do
     events = [
       %ICalendar.Event{
         summary: "Film with Amy and Adam",
         dtstart: Timex.to_datetime({{2015, 12, 24}, {8, 30, 00}}),
         dtend: Timex.to_datetime({{2015, 12, 24}, {8, 45, 00}}),
         description: "Let's go see Star Wars, and have fun.",
-        location: "123 Fun Street, Toronto ON, Canada"
+        location: "123 Fun Street, Toronto ON, Canada",
+        url: "http://www.example.com"
       }
     ]