addons/test.js and test.js -> Terminal.test.ts

Part of #862

src/Interfaces.ts

@@ -158,6 +158,9 @@ export interface IBufferSet {
 
 export interface IViewport {
   syncScrollArea(): void;
+  onWheel(ev: WheelEvent): void;
+  onTouchStart(ev: TouchEvent): void;
+  onTouchMove(ev: TouchEvent): void;
 }
 
 export interface ISelectionManager {
@@ -171,6 +174,14 @@ export interface ISelectionManager {
   setSelection(row: number, col: number, length: number): void;
 }
 
+export interface ICompositionHelper {
+  compositionstart(): void;
+  compositionupdate(ev: CompositionEvent): void;
+  compositionend(): void;
+  updateCompositionElements(dontRecurse?: boolean): void;
+  keydown(ev: KeyboardEvent): boolean;
+}
+
 export interface ICharMeasure {
   width: number;
   height: number;