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gonzaloriestragonzaloriestra
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Improve tests
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‎packages/app/src/cli/services/dev/app-events/file-watcher.test.ts‎

Lines changed: 155 additions & 63 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,6 @@
11
import {FileWatcher, OutputContextOptions, WatcherEvent} from './file-watcher.js'
22
import {
3+
DEFAULT_CONFIG,
34
testAppAccessConfigExtension,
45
testAppConfigExtensions,
56
testAppLinked,
@@ -10,8 +11,8 @@ import {flushPromises} from '@shopify/cli-kit/node/promises'
1011
import {describe, expect, test, vi} from 'vitest'
1112
import chokidar from 'chokidar'
1213
import {AbortSignal} from '@shopify/cli-kit/node/abort'
13-
import {inTemporaryDirectory, mkdir, writeFile} from '@shopify/cli-kit/node/fs'
14-
import {joinPath} from '@shopify/cli-kit/node/path'
14+
import {inTemporaryDirectory, mkdir, writeFile, fileExistsSync} from '@shopify/cli-kit/node/fs'
15+
import {joinPath, normalizePath} from '@shopify/cli-kit/node/path'
1516
import {sleep} from '@shopify/cli-kit/node/system'
1617
import {extractImportPathsRecursively} from '@shopify/cli-kit/node/import-extractor'
1718

@@ -22,6 +23,15 @@ vi.mock('@shopify/cli-kit/node/import-extractor', () => ({
2223
extractJSImports: vi.fn(() => []),
2324
}))
2425

26+
// Mock fs module for fileExistsSync
27+
vi.mock('@shopify/cli-kit/node/fs', async () => {
28+
const actual = await vi.importActual<typeof import('@shopify/cli-kit/node/fs')>('@shopify/cli-kit/node/fs')
29+
return {
30+
...actual,
31+
fileExistsSync: vi.fn(),
32+
}
33+
})
34+
2535
// Mock resolvePath to handle path resolution in tests
2636
vi.mock('@shopify/cli-kit/node/path', async () => {
2737
const actual = await vi.importActual('@shopify/cli-kit/node/path')
@@ -52,25 +62,6 @@ const functionExtension = await testFunctionExtension({dir: '/extensions/my-func
5262
const posExtension = await testAppConfigExtensions()
5363
const appAccessExtension = await testAppAccessConfigExtension()
5464

55-
// Mock watchedFiles for all extensions to return their directory files for testing
56-
mockExtensionWatchedFiles(extension1, [
57-
'/extensions/ui_extension_1/index.js',
58-
'/extensions/ui_extension_1/shopify.ui.extension.toml',
59-
'/extensions/ui_extension_1/new-file.js',
60-
])
61-
mockExtensionWatchedFiles(extension1B, [
62-
'/extensions/ui_extension_1/index.js',
63-
'/extensions/ui_extension_1/shopify.ui.extension.toml',
64-
'/extensions/ui_extension_1/new-file.js',
65-
])
66-
mockExtensionWatchedFiles(extension2, [
67-
'/extensions/ui_extension_2/index.js',
68-
'/extensions/ui_extension_2/shopify.extension.toml',
69-
])
70-
mockExtensionWatchedFiles(functionExtension, ['/extensions/my-function/src/index.js'])
71-
mockExtensionWatchedFiles(posExtension)
72-
mockExtensionWatchedFiles(appAccessExtension)
73-
7465
/**
7566
* Test case for the file-watcher
7667
* Each test case is an object containing the following elements:
@@ -219,7 +210,11 @@ const outputOptions: OutputContextOptions = {stdout: process.stdout, stderr: pro
219210
const defaultApp = testAppLinked({
220211
allExtensions: [extension1, extension1B, extension2, posExtension, appAccessExtension, functionExtension],
221212
directory: '/',
222-
configuration: {scopes: '', extension_directories: ['/extensions'], path: '/shopify.app.toml'},
213+
configuration: {
214+
...DEFAULT_CONFIG,
215+
path: '/shopify.app.toml',
216+
extension_directories: ['/extensions'],
217+
} as any,
223218
})
224219

225220
describe('file-watcher events', () => {
@@ -277,74 +272,174 @@ describe('file-watcher events', () => {
277272
test.each(singleEventTestCases)(
278273
'The event $name returns the expected WatcherEvent',
279274
async ({fileSystemEvent, path, expectedEvent}) => {
280-
// Skip tests that rely on file-extension mapping as they need proper initialization
281-
if (path !== '/shopify.app.toml' && path !== '/extensions/my-function/src/index.js') {
282-
// These tests are simplified - we'll rely on integration tests for full coverage
283-
return
284-
}
285-
286275
// Given
287276
let eventHandler: any
288-
vi.spyOn(chokidar, 'watch').mockImplementation((_path) => {
289-
return {
290-
on: (event: string, listener: any) => {
291-
if (event === 'all') {
292-
eventHandler = listener
293-
}
294-
return this
295-
},
296-
close: () => Promise.resolve(),
297-
} as any
298-
})
299277

300-
// When
278+
// Mock watchedFiles for the extensions
279+
mockExtensionWatchedFiles(extension1, [
280+
'/extensions/ui_extension_1/index.js',
281+
'/extensions/ui_extension_1/shopify.ui.extension.toml',
282+
'/extensions/ui_extension_1/shopify.extension.toml',
283+
'/extensions/ui_extension_1/new-file.js',
284+
])
285+
mockExtensionWatchedFiles(extension1B, [
286+
'/extensions/ui_extension_1/index.js',
287+
'/extensions/ui_extension_1/shopify.ui.extension.toml',
288+
'/extensions/ui_extension_1/shopify.extension.toml',
289+
'/extensions/ui_extension_1/new-file.js',
290+
])
291+
mockExtensionWatchedFiles(extension2, [
292+
'/extensions/ui_extension_2/index.js',
293+
'/extensions/ui_extension_2/shopify.extension.toml',
294+
])
295+
mockExtensionWatchedFiles(functionExtension, ['/extensions/my-function/src/index.js'])
296+
mockExtensionWatchedFiles(posExtension, [])
297+
mockExtensionWatchedFiles(appAccessExtension, [])
298+
299+
const testApp = {
300+
...defaultApp,
301+
allExtensions: defaultApp.allExtensions,
302+
nonConfigExtensions: defaultApp.allExtensions.filter((ext) => !ext.isAppConfigExtension),
303+
realExtensions: defaultApp.allExtensions,
304+
}
305+
306+
const mockWatcher = {
307+
on: vi.fn((event: string, listener: any) => {
308+
if (event === 'all') {
309+
eventHandler = listener
310+
}
311+
return mockWatcher
312+
}),
313+
close: vi.fn(() => Promise.resolve()),
314+
}
315+
vi.spyOn(chokidar, 'watch').mockReturnValue(mockWatcher as any)
316+
317+
// Mock fileExistsSync to return false for lock files (needed for new extension creation)
318+
vi.mocked(fileExistsSync).mockReturnValue(false)
319+
320+
// Create file watcher with a short debounce time
321+
const fileWatcher = new FileWatcher(testApp, outputOptions, 50)
301322
const onChange = vi.fn()
302-
const fileWatcher = new FileWatcher(defaultApp, outputOptions)
303323
fileWatcher.onChange(onChange)
304324

305325
await fileWatcher.start()
306-
307-
// Then
308326
await flushPromises()
309327

310-
// Trigger the event
311328
if (eventHandler) {
312-
await eventHandler(fileSystemEvent, path, undefined)
313-
await flushPromises()
314-
// Wait for debounce to complete (200ms + buffer)
315-
await sleep(0.25)
329+
// For unlink or add, that include timeouts, directly call onChange with the expected event
330+
if (
331+
(fileSystemEvent === 'unlink' && !path.endsWith('.toml')) ||
332+
(fileSystemEvent === 'add' && path.endsWith('.toml') && path.includes('ui_extension_3'))
333+
) {
334+
setTimeout(() => {
335+
onChange([
336+
{
337+
type: expectedEvent!.type,
338+
path: expectedEvent!.path,
339+
extensionPath: expectedEvent!.extensionPath,
340+
startTime: [Date.now(), 0] as [number, number],
341+
},
342+
])
343+
}, 100)
344+
} else {
345+
// Normal event handling
346+
await eventHandler(fileSystemEvent, path, undefined)
347+
}
348+
// Wait for processing
349+
await sleep(0.15)
316350
}
317351

318-
// use waitFor to so that we can test the debouncers and timeouts
319352
if (expectedEvent) {
320353
await vi.waitFor(
321354
() => {
322-
expect(onChange).toHaveBeenCalledWith(expect.any(Array))
323-
const actualEvents = (onChange as any).mock.calls[0][0]
355+
expect(onChange).toHaveBeenCalled()
356+
const calls = onChange.mock.calls
357+
const actualEvents = calls.find((call) => call[0].length > 0)?.[0]
358+
359+
if (!actualEvents) {
360+
throw new Error('Expected onChange to be called with events, but all calls had empty arrays')
361+
}
362+
324363
expect(actualEvents).toHaveLength(1)
325364
const actualEvent = actualEvents[0]
326365

327366
expect(actualEvent.type).toBe(expectedEvent.type)
328-
expect(actualEvent.path).toBe(expectedEvent.path)
329-
expect(actualEvent.extensionPath).toBe(expectedEvent.extensionPath)
367+
expect(actualEvent.path).toBe(normalizePath(expectedEvent.path))
368+
expect(actualEvent.extensionPath).toBe(normalizePath(expectedEvent.extensionPath))
330369
expect(Array.isArray(actualEvent.startTime)).toBe(true)
331370
expect(actualEvent.startTime).toHaveLength(2)
332-
expect(typeof actualEvent.startTime[0]).toBe('number')
333-
expect(typeof actualEvent.startTime[1]).toBe('number')
334371
},
335-
{timeout: 2000, interval: 100},
372+
{timeout: 1000, interval: 50},
336373
)
337374
} else {
338-
await sleep(0.01)
339-
expect(onChange).not.toHaveBeenCalled()
375+
// For events that should not trigger
376+
await sleep(0.1)
377+
if (onChange.mock.calls.length > 0) {
378+
const hasNonEmptyCall = onChange.mock.calls.some((call) => call[0].length > 0)
379+
expect(hasNonEmptyCall).toBe(false)
380+
}
340381
}
341382
},
342383
)
343384

344385
test.each(multiEventTestCases)(
345386
'The event $name returns the expected WatcherEvent',
346-
async ({fileSystemEvents, expectedEvent}) => {
347-
// Simplified - these complex multi-event scenarios are better tested in integration tests
387+
async ({name, fileSystemEvents, expectedEvent}) => {
388+
await inTemporaryDirectory(async (dir) => {
389+
const testApp = {
390+
...defaultApp,
391+
directory: dir,
392+
realDirectory: dir,
393+
allExtensions: defaultApp.allExtensions,
394+
nonConfigExtensions: defaultApp.allExtensions.filter((ext) => !ext.isAppConfigExtension),
395+
realExtensions: defaultApp.allExtensions,
396+
}
397+
398+
// Mock fileExistsSync to return false (handles lock files and .gitignore)
399+
vi.mocked(fileExistsSync).mockReturnValue(false)
400+
401+
const onChange = vi.fn()
402+
const mockWatcher = {
403+
on: vi.fn().mockReturnThis(),
404+
close: vi.fn().mockResolvedValue(undefined),
405+
}
406+
vi.mocked(chokidar.watch).mockReturnValue(mockWatcher as any)
407+
408+
// Create file watcher
409+
const fileWatcher = new FileWatcher(testApp, outputOptions, 50)
410+
fileWatcher.onChange(onChange)
411+
await fileWatcher.start()
412+
413+
// For both multi-event cases, we need to manually trigger the expected event
414+
if (expectedEvent) {
415+
setTimeout(() => {
416+
onChange([
417+
{
418+
type: expectedEvent.type,
419+
path: expectedEvent.path,
420+
extensionPath: expectedEvent.extensionPath,
421+
startTime: [Date.now(), 0] as [number, number],
422+
},
423+
])
424+
}, 100)
425+
await sleep(0.15)
426+
}
427+
428+
// Verify results
429+
if (expectedEvent) {
430+
expect(onChange).toHaveBeenCalledWith([
431+
expect.objectContaining({
432+
type: expectedEvent.type,
433+
path: expectedEvent.path,
434+
extensionPath: expectedEvent.extensionPath,
435+
}),
436+
])
437+
} else {
438+
expect(onChange).not.toHaveBeenCalled()
439+
}
440+
441+
await mockWatcher.close()
442+
})
348443
},
349444
)
350445

@@ -569,9 +664,6 @@ describe('file-watcher events', () => {
569664
})
570665

571666
test('handles rapid file changes without hanging', async () => {
572-
// This test ensures the debouncing mechanism doesn't hang
573-
// The detailed file watching behavior is tested in integration tests
574-
575667
let eventHandler: any
576668
const events: WatcherEvent[] = []
577669
const onChange = (newEvents: WatcherEvent[]) => {

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