Makes API accept offset/limit or page/limit parameters for retrieving collections.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@4571 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/functional/application_controller_test.rb

@@ -43,4 +43,61 @@ class ApplicationControllerTest < ActionController::TestCase
   def test_call_hook_mixed_in
     assert @controller.respond_to?(:call_hook)
   end
+  
+  context "test_api_offset_and_limit" do
+    context "without params" do
+      should "return 0, 25" do
+        assert_equal [0, 25], @controller.api_offset_and_limit({})
+      end
+    end
+    
+    context "with limit" do
+      should "return 0, limit" do
+        assert_equal [0, 30], @controller.api_offset_and_limit({:limit => 30})
+      end
+      
+      should "not exceed 100" do
+        assert_equal [0, 100], @controller.api_offset_and_limit({:limit => 120})
+      end
+
+      should "not be negative" do
+        assert_equal [0, 25], @controller.api_offset_and_limit({:limit => -10})
+      end
+    end
+    
+    context "with offset" do
+      should "return offset, 25" do
+        assert_equal [10, 25], @controller.api_offset_and_limit({:offset => 10})
+      end
+
+      should "not be negative" do
+        assert_equal [0, 25], @controller.api_offset_and_limit({:offset => -10})
+      end
+      
+      context "and limit" do
+        should "return offset, limit" do
+          assert_equal [10, 50], @controller.api_offset_and_limit({:offset => 10, :limit => 50})
+        end
+      end
+    end
+    
+    context "with page" do
+      should "return offset, 25" do
+        assert_equal [0, 25], @controller.api_offset_and_limit({:page => 1})
+        assert_equal [50, 25], @controller.api_offset_and_limit({:page => 3})
+      end
+
+      should "not be negative" do
+        assert_equal [0, 25], @controller.api_offset_and_limit({:page => 0})
+        assert_equal [0, 25], @controller.api_offset_and_limit({:page => -2})
+      end
+      
+      context "and limit" do
+        should "return offset, limit" do
+          assert_equal [0, 100], @controller.api_offset_and_limit({:page => 1, :limit => 100})
+          assert_equal [200, 100], @controller.api_offset_and_limit({:page => 3, :limit => 100})
+        end
+      end
+    end
+  end
 end