Mark set/jump as a clean architecture

test/content/mock/MockConsoleClient.ts

@@ -0,0 +1,26 @@
+import ConsoleClient from '../../../src/content/client/ConsoleClient';
+
+export default class MockConsoleClient implements ConsoleClient {
+  public isError: boolean;
+
+  public text: string;
+
+  constructor() {
+    this.isError = false;
+    this.text = '';
+  }
+
+  info(text: string): Promise<void> {
+    this.isError = false;
+    this.text = text;
+    return Promise.resolve();
+  }
+
+  error(text: string): Promise<void> {
+    this.isError = true;
+    this.text = text;
+    return Promise.resolve();
+  }
+}
+
+

test/content/mock/MockScrollPresenter.ts

@@ -0,0 +1,47 @@
+import ScrollPresenter, { Point } from '../../../src/content/presenters/ScrollPresenter';
+
+export default class MockScrollPresenter implements ScrollPresenter {
+  private pos: Point;
+  
+  constructor() {
+    this.pos = { x: 0, y: 0 };
+  }
+
+  getScroll(): Point {
+    return this.pos;
+  }
+
+  scrollVertically(amount: number, _smooth: boolean): void {
+    this.pos.y += amount;
+  }
+
+  scrollHorizonally(amount: number, _smooth: boolean): void {
+    this.pos.x += amount;
+  }
+
+  scrollPages(amount: number, _smooth: boolean): void {
+    this.pos.x += amount;
+  }
+
+  scrollTo(x: number, y: number, _smooth: boolean): void {
+    this.pos.x = x;
+    this.pos.y = y;
+  }
+
+  scrollToTop(_smooth: boolean): void {
+    this.pos.y = 0;
+  }
+
+  scrollToBottom(_smooth: boolean): void {
+    this.pos.y = Infinity;
+  }
+
+  scrollToHome(_smooth: boolean): void {
+    this.pos.x = 0;
+  }
+
+  scrollToEnd(_smooth: boolean): void {
+    this.pos.x = Infinity;
+  }
+}
+