feat: add test for catching errors in Emitter

test/emitter.test.ts

@@ -1,9 +1,10 @@
 // Note: we need to import logger from the root
 // because this is the logger used in logError in ../src/common/util
 import { logger } from "../node_modules/@coder/logger"
+
 import { Emitter } from "../src/common/emitter"
 
-describe("Emitter", () => {
+describe("emitter", () => {
   let spy: jest.SpyInstance
 
   beforeEach(() => {
@@ -59,6 +60,25 @@ describe("Emitter", () => {
     emitter.dispose()
   })
 
+  it("should log an error if something goes wrong", async () => {
+    const HELLO_WORLD = "HELLO_WORLD"
+    const mockCallback = jest.fn(() => "Mock function called")
+    const message = "You don't have access to that folder."
+
+    const emitter = new Emitter<{ event: string; callback: () => void }>()
+
+    const onHelloWorld = ({ event, callback }: { event: string; callback: () => void }): void => {
+      if (event === HELLO_WORLD) {
+        callback()
+        throw new Error(message)
+      }
+    }
+
+    emitter.event(onHelloWorld)
+
+    await emitter.emit({ event: HELLO_WORLD, callback: mockCallback })
+  })
+
   it("should log an error if something goes wrong", async () => {
     const HELLO_WORLD = "HELLO_WORLD"
     const mockCallback = jest.fn(() => "Mock function called")

test/serviceWorker.test.ts

@@ -0,0 +1,9 @@
+describe("serviceWorker", () => {
+  it("should add the proper eventListeners", () => {
+    // make sure install, active and fetch were added as event listeners
+  })
+
+  it("should call the proper callbacks", () => {
+    // somehow test Line 8 with the events waitUntil..
+  })
+})