Enforce minimum test coverage (#1646)

## Description:

Enforce minimum test coverage.

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [ ] I have read and accepted the CLA agreement (only required once).

src/client/graphics/layers/EmojiTable.ts

@@ -12,12 +12,11 @@ import { TransformHandler } from "../TransformHandler";
 @customElement("emoji-table")
 export class EmojiTable extends LitElement {
   @state() public isVisible = false;
-  public eventBus: EventBus;
   public transformHandler: TransformHandler;
   public game: GameView;
 
-  initEventBus() {
-    this.eventBus.on(ShowEmojiMenuEvent, (e) => {
+  initEventBus(eventBus: EventBus) {
+    eventBus.on(ShowEmojiMenuEvent, (e) => {
       this.isVisible = true;
       const cell = this.transformHandler.screenToWorldCoordinates(e.x, e.y);
       if (!this.game.isValidCoord(cell.x, cell.y)) {
@@ -40,7 +39,7 @@ export class EmojiTable extends LitElement {
           targetPlayer === this.game.myPlayer()
             ? AllPlayers
             : (targetPlayer as PlayerView);
-        this.eventBus.emit(
+        eventBus.emit(
           new SendEmojiIntentEvent(
             recipient,
             flattenedEmojiTable.indexOf(emoji),