diff --git a/angular-ui-tree/angular-ui-tree-tests.ts b/angular-ui-tree/angular-ui-tree-tests.ts
index e66408814..4e5ef91b9 100644
--- a/angular-ui-tree/angular-ui-tree-tests.ts
+++ b/angular-ui-tree/angular-ui-tree-tests.ts
@@ -11,3 +11,72 @@ var treeNode2: AngularUITree.ITreeNode = {
     nodes: [treeNode],
     title: "test2"
 };
+
+// fake jquery node here so that we can pull a pretend
+// angular scope element out of it
+var dummyJQueryNode: ng.IAugmentedJQuery;
+var fakeScope: (ng.IScope | AngularUITree.IParentTreeNodeScope) = dummyJQueryNode.scope();
+
+(<AngularUITree.ITreeNodeScope> fakeScope).node = treeNode;
+
+var treeNodeScope: AngularUITree.ITreeNodeScope = <AngularUITree.ITreeNodeScope> fakeScope;
+
+(<AngularUITree.IParentTreeNodeScope> fakeScope).isParent = (nodeScope: AngularUITree.ITreeNodeScope) => {
+    return true;
+};
+
+var parentTreeNodeScope: AngularUITree.IParentTreeNodeScope = <AngularUITree.IParentTreeNodeScope> fakeScope;
+
+var eventSourceInfo: AngularUITree.IEventSourceInfo = {
+    cloneModel: {},
+    nodeScope: treeNodeScope,
+    index: 0,
+    nodesScope: parentTreeNodeScope
+};
+
+var position: AngularUITree.IPosition = {
+    dirAx: 0,
+    dirX: 0,
+    dirY: 0,
+    distAxX: 0,
+    distAxY: 0,
+    distX: 0,
+    distY: 0,
+    lastDirX: 0,
+    lastDirY: 0,
+    lastX: 0,
+    lastY: 0,
+    moving: true,
+    nowX: 0,
+    nowY: 0,
+    offsetX: 0,
+    offsetY: 0,
+    startX: 0,
+    startY: 0
+
+};
+
+var eventInfo: AngularUITree.IEventInfo = {
+    source: eventSourceInfo,
+    dest: {
+        index: 0,
+        nodesScope: parentTreeNodeScope
+    },
+    elements: {},
+    pos: position
+};
+
+var acceptCallback: AngularUITree.IAcceptCallback = (source: AngularUITree.ITreeNodeScope,
+                                                     destination: AngularUITree.ITreeNodeScope,
+                                                     destinationIndex: number) => {
+    return false;
+};
+
+var droppedCallback: AngularUITree.IDroppedCallback = (eventInfo: AngularUITree.IEventInfo) => {
+    return;
+};
+
+var callbacks: AngularUITree.ICallbacks = {
+    accept: acceptCallback,
+    dropped: droppedCallback
+};
diff --git a/angular-ui-tree/angular-ui-tree.d.ts b/angular-ui-tree/angular-ui-tree.d.ts
index 1017ac11c..62c8899fa 100644
--- a/angular-ui-tree/angular-ui-tree.d.ts
+++ b/angular-ui-tree/angular-ui-tree.d.ts
@@ -3,7 +3,71 @@
 // Definitions by: Calvin Fernandez <https://github.com/CalvinFernandez>
 // Definitions: https://github.com/borisyankov/DefinitelyTyped
 
+/// <reference path='../angularjs/angular.d.ts' />
+
 declare module AngularUITree {
+    interface IEventSourceInfo {
+        cloneModel: any;
+        index: number;
+        nodeScope: ITreeNodeScope;
+        nodesScope: ITreeNodeScope;
+    }
+
+    interface IPosition {
+        dirAx: number;
+        dirX: number;
+        dirY: number;
+        distAxX: number;
+        distAxY: number;
+        distX: number;
+        distY: number;
+        lastDirX: number;
+        lastDirY: number;
+        lastX: number;
+        lastY: number;
+        moving: boolean;
+        nowX: number;
+        nowY: number;
+        offsetX: number;
+        offsetY: number;
+        startX: number;
+        startY: number;
+    }
+
+    interface IEventInfo {
+        dest: {
+            index: number;
+            nodesScope: IParentTreeNodeScope;
+        };
+        elements: any;
+        pos: IPosition;
+        source: IEventSourceInfo;
+    }
+
+    interface IAcceptCallback {
+        (source: ITreeNodeScope, destination: ITreeNodeScope, destinationIndex: number): boolean;
+    }
+
+    interface IDroppedCallback {
+        (eventInfo: IEventInfo): void;
+    }
+
+    interface ICallbacks {
+        accept: IAcceptCallback;
+        dropped: IDroppedCallback;
+    }
+
+    /**
+     * Internal representation of node in the UI
+     */
+    interface ITreeNodeScope extends ng.IScope {
+        node: ITreeNode;
+    }
+
+    interface IParentTreeNodeScope extends ITreeNodeScope {
+        isParent(nodeScope: ITreeNodeScope): boolean;
+    }
+
     /**
       * Node in list
       */