This fixes failing tests when the timezone is different than utc

There were several problems:
* Time.now returns the systems time, not the users time
* fixtures do not translate dates from timezone to utc, but stores the
  date verbatim
* calling a controller will set the timezone to the preference of the
  current_user. So it could be changed while you do not realize this. I
  fixed the failing test, but problems could be elsewhere

test/fixtures/contexts.yml

@@ -1,8 +1,11 @@
 # Read about fixtures at http://ar.rubyonrails.org/classes/Fixtures.html
-<% 
 
-def today 
-  Time.now.utc.to_s(:db) 
+# Please note that dates in yml are not converted to utc timezone like
+# rails does automatically in models or controllers! Convert to utc manually!
+<%
+
+def today
+  Time.zone.now.utc.to_s(:db)
 end
 
 %>

test/fixtures/notes.yml

@@ -1,16 +1,19 @@
 # Read about fixtures at http://ar.rubyonrails.org/classes/Fixtures.html
-<% 
-def today 
-  Time.now.utc.to_s(:db) 
+
+# Please note that dates in yml are not converted to utc timezone like
+# rails does automatically in models or controllers! Convert to utc manually!
+<%
+def today
+  Time.zone.now.utc.to_s(:db)
 end
- 
-def next_week 
-  1.week.from_now.utc.to_s(:db) 
+
+def next_week
+  1.week.from_now.utc.to_s(:db)
+end
+
+def last_week
+  1.week.ago.utc.to_s(:db)
 end
- 
-def last_week 
-  1.week.ago.utc.to_s(:db) 
-end 
 %>
 
 first_notes:

test/fixtures/projects.yml

@@ -1,7 +1,10 @@
 # Read about fixtures at http://ar.rubyonrails.org/classes/Fixtures.html
+
+# Please note that dates in yml are not converted to utc timezone like
+# rails does automatically in models or controllers! Convert to utc manually!
 <%
-def today 
-  Time.zone.now.beginning_of_day.to_s(:db) 
+def today
+  Time.zone.now.utc.beginning_of_day.to_s(:db)
 end
 %>
 

test/fixtures/recurring_todos.yml

@@ -1,26 +1,29 @@
+# Please note that dates in yml are not converted to utc timezone like
+# rails does automatically in models or controllers! Convert to utc manually!
+
 <%
 def today
-    Time.zone.now.beginning_of_day.to_s(:db)
+    Time.zone.now.utc.beginning_of_day.to_s(:db)
 end
 
 def next_week
-    1.week.from_now.beginning_of_day.to_s(:db)
+    1.week.from_now.utc.beginning_of_day.to_s(:db)
 end
 
 def last_week
-    1.week.ago.beginning_of_day.to_s(:db)
+    1.week.ago.utc.beginning_of_day.to_s(:db)
 end
 
 def two_weeks_ago
-    2.weeks.ago.beginning_of_day.to_s(:db)
+    2.weeks.ago.utc.beginning_of_day.to_s(:db)
 end
 
 def two_weeks_hence
-    2.weeks.from_now.beginning_of_day.to_s(:db)
+    2.weeks.from_now.utc.beginning_of_day.to_s(:db)
 end
 
 def way_back
-  Time.zone.local(2008,1,1).to_s(:db)
+  Time.zone.local(2008,1,1).utc.to_s(:db)
 end
 
 %>

test/fixtures/tags.yml

@@ -1,17 +1,27 @@
+# please note that dates in yml are not converted to utc timezone like
+# rails does automatically in models or controllers! Convert to utc manually!
+
+<%
+def today
+  Time.zone.now.utc.beginning_of_day.to_s(:db)
+end
+%>
+
 foo:
   id: 1
   name: foo
-  created_at: <%= Time.now.utc.to_s(:db) %>
-  updated_at: <%= Time.now.utc.to_s(:db) %>
+  created_at: <%= today %>
+  updated_at: <%= today %>
 
 bar:
   id: 2
   name: bar
-  created_at: <%= Time.now.utc.to_s(:db) %>
-  updated_at: <%= Time.now.utc.to_s(:db) %>
-  
+  created_at: <%= today %>
+  updated_at: <%= today %>
+
 baz:
   id: 3
   name: baz
-  created_at: <%= Time.now.utc.to_s(:db) %>
-  updated_at: <%= Time.now.utc.to_s(:db) %>
+  created_at: <%= today %>
+  updated_at: <%= today %>
+  

test/fixtures/todos.yml

@@ -1,26 +1,27 @@
 # Read about fixtures at http://ar.rubyonrails.org/classes/Fixtures.html
-<% 
 
-Time.zone = SITE_CONFIG['time_zone']
+# Please note that dates in yml are not converted to utc timezone like
+# rails does automatically in models or controllers! Convert to utc manually!
 
-def today 
-  Time.zone.now.beginning_of_day.to_s(:db)
+<%
+def today
+  Time.zone.now.utc.beginning_of_day.to_s(:db)
 end
 
-def next_week 
-  1.week.from_now.beginning_of_day.to_s(:db)
-end 
+def next_week
+  1.week.from_now.utc.beginning_of_day.to_s(:db)
+end
 
-def last_week 
-  1.week.ago.beginning_of_day.to_s(:db)
+def last_week
+  1.week.ago.utc.beginning_of_day.to_s(:db)
 end
 
 def two_weeks_ago
-  2.weeks.ago.beginning_of_day.to_s(:db)
+  2.weeks.ago.utc.beginning_of_day.to_s(:db)
 end
 
 def two_weeks_hence
-  2.weeks.from_now.beginning_of_day.to_s(:db)
+  2.weeks.from_now.utc.beginning_of_day.to_s(:db)
 end
 
 %>
@@ -192,7 +193,7 @@ call_stock_broker:
   due: ~
   completed_at: ~
   user_id: 1
-  
+
 select_delorean_model:
   id: 15
   context_id: 6
@@ -254,4 +255,3 @@ email_broker:
   description: Ask about better stocks
   notes: ~
   state: pending
-