move code area to right on bigger screens

tests/unit/presentation/Throttle.spec.ts

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+import 'mocha';
+import { expect } from 'chai';
+import { throttle, ITimer } from '@/presentation/Throttle';
+import { EventSource } from '@/infrastructure/Events/EventSource';
+import { IEventSubscription } from '@/infrastructure/Events/IEventSource';
+
+describe('throttle', () => {
+    it('should call the callback immediately', () => {
+        // arrange
+        const timer = new TimerMock();
+        let totalRuns = 0;
+        const callback = () => totalRuns++;
+        const throttleFunc = throttle(callback, 500, timer);
+        // act
+        throttleFunc();
+        // assert
+        expect(totalRuns).to.equal(1);
+    });
+    it('should call the callback again after the timeout', () => {
+        // arrange
+        const timer = new TimerMock();
+        let totalRuns = 0;
+        const callback = () => totalRuns++;
+        const throttleFunc = throttle(callback, 500, timer);
+        // act
+        throttleFunc();
+        totalRuns--;
+        throttleFunc();
+        timer.tick(500);
+        // assert
+        expect(totalRuns).to.equal(1);
+    });
+    it('calls the callback at most once at given time', () => {
+        // arrange
+        const timer = new TimerMock();
+        let totalRuns = 0;
+        const callback = () => totalRuns++;
+        const waitInMs = 500;
+        const totalCalls = 10;
+        const throttleFunc = throttle(callback, waitInMs, timer);
+        // act
+        for (let i = 0; i < totalCalls; i++) {
+            timer.tick(waitInMs / totalCalls * i);
+            throttleFunc();
+        }
+        // assert
+        expect(totalRuns).to.equal(2); // initial and at the end
+    });
+});
+
+class TimerMock implements ITimer {
+    private timeChanged = new EventSource<number>();
+    private subscriptions = new Array<IEventSubscription>();
+    private currentTime = 0;
+    public setTimeout(callback: () => void, ms: number): NodeJS.Timeout {
+        const runTime = this.currentTime + ms;
+        const subscription = this.timeChanged.on((time) => {
+            if (time >= runTime) {
+                callback();
+                subscription.unsubscribe();
+            }
+        });
+        this.subscriptions.push(subscription);
+        return (this.subscriptions.length - 1) as any;
+    }
+    public clearTimeout(timeoutId: NodeJS.Timeout): void {
+        this.subscriptions[timeoutId as any].unsubscribe();
+    }
+    public dateNow(): number {
+        return this.currentTime;
+    }
+    public tick(ms: number): void {
+        this.currentTime = ms;
+        this.timeChanged.notify(this.currentTime);
+    }
+}