[Scrolling] Fill in specs

Fill in specs for ScrollingListController, and for
the specific Column types that support it. Separate
out the code that produces actual rows in order to
improve testability and maintainability. WTD-534.

platform/features/scrolling/test/NameColumnSpec.js

@@ -9,6 +9,29 @@ define(
         "use strict";
 
         describe("A name column", function () {
+            var mockDomainObject,
+                column;
+
+            beforeEach(function () {
+                mockDomainObject = jasmine.createSpyObj(
+                    "domainObject",
+                    [ "getModel" ]
+                );
+                mockDomainObject.getModel.andReturn({
+                    name: "Test object name"
+                });
+                column = new NameColumn();
+            });
+
+            it("reports a column header", function () {
+                expect(column.getTitle()).toEqual("Name");
+            });
+
+            it("looks up name from an object's model", function () {
+                expect(column.getValue(mockDomainObject))
+                    .toEqual("Test object name");
+            });
+
         });
     }
 );