@tevm/compiler/src/utils/resolvePromise.spec.ts

Utilities around compiler

import fs from 'node:fs'
import { access } from 'node:fs/promises'
import { Effect } from 'effect'
import { type Mock, beforeEach, describe, expect, it, vi } from 'vitest'
import type { FileAccessObject, Logger } from '../types.js'
import { resolveEffect } from './resolvePromise.js'

const fao: FileAccessObject = {
	existsSync: (filePath: string) => fs.existsSync(filePath),
	readFile: (filePath: string, encoding: string) =>
		Promise.resolve(fs.readFileSync(filePath, { encoding: encoding as 'utf8' })),
	readFileSync: (filePath: string) => fs.readFileSync(filePath, 'utf8'),
	exists: async (filePath: string) => {
		try {
			await access(filePath)
			return true
		} catch (e) {
			return false
		}
	},
}

let logger: Logger = {
	error: vi.fn(),
	info: vi.fn(),
	warn: vi.fn(),
	log: vi.fn(),
}

describe('resolvePromise', () => {
	beforeEach(() => {
		logger = {
			error: vi.fn(),
			info: vi.fn(),
			warn: vi.fn(),
			log: vi.fn(),
		}
	})

	it('should resolve a file path in the base directory', async () => {
		const resolvedPath = await Effect.runPromise(resolveEffect('./resolvePromise.spec.ts', __dirname, fao, logger))
		expect(resolvedPath.endsWith('src/utils/resolvePromise.spec.ts')).toBe(true)
	})

	it('should handle readFile throwing', async () => {
		fao.readFile = () => Promise.reject('readFile error')
		await expect(
			Effect.runPromise(resolveEffect('./resolvePromise.spec.tst', './src/utils', fao, logger)),
		).rejects.toThrowErrorMatchingInlineSnapshot('[(FiberFailure) Error: readFile error]')
		expect((logger.error as Mock).mock.calls).toMatchInlineSnapshot(`
			[
			  [
			    "readFile error",
			  ],
			  [
			    "Error reading file",
			  ],
			  [
			    "readFile error",
			  ],
			  [
			    "There was an error resolving ./resolvePromise.spec.tst",
			  ],
			]
		`)
	})

	it('should throw an error for non-existent file', async () => {
		fao.exists = () => Promise.resolve(false)
		await expect(
			Effect.runPromise(resolveEffect('./resolvePromise.spec.tst', './src/utils', fao, logger)),
		).rejects.toThrowErrorMatchingInlineSnapshot(
			`[(FiberFailure) Error: Cannot find module './resolvePromise.spec.tst' from './src/utils']`,
		)
		expect((logger.error as Mock).mock.calls).toMatchInlineSnapshot(`
			[
			  [
			    [Error: Cannot find module './resolvePromise.spec.tst' from './src/utils'],
			  ],
			  [
			    "There was an error resolving ./resolvePromise.spec.tst",
			  ],
			]
		`)
	})

	it('should throw an error if exists throws', async () => {
		fao.exists = () => {
			throw new Error('exists error')
		}
		await expect(
			Effect.runPromise(resolveEffect('./resolvePromise.spec.ts', './src/utils', fao, logger)),
		).rejects.toThrowErrorMatchingInlineSnapshot('[(FiberFailure) Error: exists error]')
		expect((logger.error as Mock)?.mock?.calls?.[0]?.slice(0, 2)).toMatchInlineSnapshot(`
      [
        [Error: exists error],
      ]
    `)
	})
})