Added a listenersManager

test/utils/listenersManager.ts

@@ -0,0 +1,41 @@
+import { expect } from "vitest";
+
+/**
+ * Whether or not it is currently the first time running this manager.
+ */
+let firstTime = true;
+
+/**
+ * The list of listeners that were present during the first time this manager is run.
+ * These initial listeners are needed throughout the entire test suite, so we never remove them.
+ */
+const initialListeners: unknown[] = [];
+
+/**
+ * The current listener that is only needed for the current test file.
+ * We plan to delete it during the next test file, when it is no longer needed.
+ */
+let currentListener;
+
+export function manageListeners() {
+  if (firstTime) {
+    initialListeners.push(...process.listeners("message"));
+  } else {
+    expect(process.listeners("message").length).toBeLessThan(7);
+
+    // Remove the listener that was used during the previous test file
+    if (currentListener) {
+      process.removeListener("message", currentListener);
+      currentListener = null;
+    }
+
+    // Find the new listener that is being used for the current test file
+    process.listeners("message").forEach((fn) => {
+      if (!initialListeners.includes(fn)) {
+        currentListener = fn;
+      }
+    });
+  }
+
+  firstTime = false;
+}

test/utils/testFileInitialization.ts

@@ -21,6 +21,7 @@ import MockImage from "#test/utils/mocks/mocksContainer/mockImage";
 import Phaser from "phaser";
 import InputText from "phaser3-rex-plugins/plugins/inputtext";
 import { vi } from "vitest";
+import { manageListeners } from "./listenersManager";
 
 /**
  * An initialization function that is run at the beginning of every test file (via `beforeAll()`).
@@ -95,4 +96,6 @@ export function initTestFile() {
     initLoggedInUser();
     initMysteryEncounters();
   }
+
+  manageListeners();
 }