chore: tests

package.json

@@ -49,6 +49,7 @@
 		"@types/node": "^18.18.3",
 		"ajv-cli": "^5.0.0",
 		"jest": "^29.7.0",
+		"jest-mock-extended": "^3.0.5",
 		"json-schema-to-typescript": "^13.1.2",
 		"prettier": "^2.8.8",
 		"ts-jest": "^29.1.2",

src/__mocks__/util.ts

@@ -1,3 +1,6 @@
+import { mock } from 'jest-mock-extended'
+import { IpcWrapper } from '../host-api/ipc-wrapper.js'
+
 const orgSetTimeout = setTimeout
 export async function runAllTimers(): Promise<void> {
 	// Run all timers, and wait, multiple times.
@@ -16,3 +19,51 @@ export async function runTimersUntilNow(): Promise<void> {
 		await new Promise((resolve) => orgSetTimeout(resolve, 0))
 	}
 }
+
+const mockOptions = {
+	fallbackMockImplementation: () => {
+		throw new Error('not mocked')
+	},
+}
+
+export function createIpcWrapperMock<TOutbound extends { [key: string]: any }, TInbound extends { [key: string]: any }>(
+	sendWithCb?: jest.Mock<
+		ReturnType<IpcWrapper<TOutbound, TInbound>['sendWithCb']>,
+		Parameters<IpcWrapper<TOutbound, TInbound>['sendWithCb']>
+	>
+): IpcWrapper<TOutbound, TInbound> {
+	return mock<IpcWrapper<TOutbound, TInbound>>(
+		{
+			sendWithCb,
+		},
+		mockOptions
+	)
+}
+
+export interface ManualPromise<T> extends Promise<T> {
+	isResolved: boolean
+	manualResolve(res: T): void
+	manualReject(e: Error): void
+}
+// eslint-disable-next-line @typescript-eslint/promise-function-async
+export function createManualPromise<T>(): ManualPromise<T> {
+	let resolve: (val: T) => void = () => null
+	let reject: (err: Error) => void = () => null
+	const promise = new Promise<T>((resolve0, reject0) => {
+		resolve = resolve0
+		reject = reject0
+	})
+
+	const manualPromise: ManualPromise<T> = promise as any
+	manualPromise.isResolved = false
+	manualPromise.manualReject = (err) => {
+		manualPromise.isResolved = true
+		return reject(err)
+	}
+	manualPromise.manualResolve = (val) => {
+		manualPromise.isResolved = true
+		return resolve(val)
+	}
+
+	return manualPromise
+}