Add specs for cases where timezone used was changed.

core/time/shared/local.rb

@@ -12,6 +12,29 @@
         [0, 0, 0, 1, 1, 1910, 6, 1, false, "AMT"]
     end
   end
+
+  describe "timezone changes" do
+    it "correctly adjusts the timezone change to 'EET' on 'Europe/Istanbul'" do
+      with_timezone("Europe/Istanbul") do
+        Time.send(@method, 1910, 10, 1).to_a.should ==
+          [4, 3, 0, 1, 10, 1910, 6, 274, false, "EET"]
+      end
+    end
+
+    it "correctly adjusts the timezone change to 'WET' on 'Europe/Lisbon'" do
+      with_timezone("Europe/Lisbon") do
+        Time.send(@method, 1912, 1, 1).to_a.should ==
+          [45, 36, 0, 1, 1, 1912, 1, 1, false, "WET"]
+      end
+    end
+
+    it "correctly adjusts the timezone change to 'CEST' on 'Europe/Amsterdam'" do
+      with_timezone("Europe/Amsterdam") do
+        Time.send(@method, 1940, 5, 16).to_a.should ==
+          [0, 40, 1, 16, 5, 1940, 4, 137, true, "CEST"]
+      end
+    end
+  end
 end
 
 describe :time_local_10_arg, :shared => true do