diff --git a/platform/commonUI/general/test/controllers/TimeRangeControllerSpec.js b/platform/commonUI/general/test/controllers/TimeRangeControllerSpec.js
index 48411756b0..2068b9bfdb 100644
--- a/platform/commonUI/general/test/controllers/TimeRangeControllerSpec.js
+++ b/platform/commonUI/general/test/controllers/TimeRangeControllerSpec.js
@@ -26,6 +26,11 @@ define(
     function (TimeRangeController) {
         "use strict";
 
+        var SEC = 1000,
+            MIN = 60 * SEC,
+            HOUR = 60 * MIN,
+            DAY = 24 * HOUR;
+
         describe("The TimeRangeController", function () {
             var mockScope,
                 mockNow,
@@ -61,6 +66,65 @@ define(
                     .toHaveBeenCalledWith("ngModel", jasmine.any(Function));
             });
 
+            describe("when dragged", function () {
+                beforeEach(function () {
+                    mockScope.ngModel = {
+                        outer: {
+                            start: DAY * 1000,
+                            end: DAY * 1001
+                        },
+                        inner: {
+                            start: DAY * 1000 + HOUR * 3,
+                            end: DAY * 1001 - HOUR * 3
+                        }
+                    };
+                    mockScope.spanWidth = 1000;
+                    fireWatch("spanWidth", mockScope.spanWidth);
+                    fireWatchCollection("ngModel", mockScope.ngModel);
+                });
+
+                it("updates the start time for left drags", function () {
+                    mockScope.startLeftDrag();
+                    mockScope.leftDrag(250);
+                    expect(mockScope.ngModel.inner.start)
+                        .toEqual(DAY * 1000 + HOUR * 9);
+                });
+
+                it("updates the end time for right drags", function () {
+                    mockScope.startRightDrag();
+                    mockScope.rightDrag(-250);
+                    expect(mockScope.ngModel.inner.end)
+                        .toEqual(DAY * 1000 + HOUR * 15);
+                });
+
+                it("updates both start and end for middle drags", function () {
+                    mockScope.startMiddleDrag();
+                    mockScope.middleDrag(-125);
+                    expect(mockScope.ngModel.inner).toEqual({
+                        start: DAY * 1000,
+                        end: DAY * 1000 + HOUR * 18
+                    });
+                    mockScope.middleDrag(250);
+                    expect(mockScope.ngModel.inner).toEqual({
+                        start: DAY * 1000 + HOUR * 6,
+                        end: DAY * 1001
+                    });
+                });
+            });
+
+
+
+            it("enforces a minimum inner span", function () {
+
+            });
+
+            it("enforces a minimum outer span", function () {
+
+            });
+
+            it("enforces a minimum inner span when outer span changes", function () {
+
+            });
 
         });
     }