finish all tests

Author: kentcdodds

exercises/05.portals/01.solution.create/portal.test.ts

@@ -5,7 +5,7 @@ import './index.tsx'
 
 await testStep('The portal is rendered to the body', async () => {
 	const [heartButton] = await screen.findAllByText('🤍')
-	heartButton.focus()
+	fireEvent.focusIn(heartButton)
 
 	const tooltip = await screen.findByText('Add favorite')
 	expect(tooltip).toBeTruthy()

exercises/06.layout-computation/01.solution.layout-effect/layout-effect.test.ts

@@ -0,0 +1,31 @@
+import { expect, testStep, dtl } from '@epic-web/workshop-utils/test'
+const { screen, fireEvent, waitFor } = dtl
+
+import './index.tsx'
+
+await testStep('The portal is rendered to the body', async () => {
+	const [heartButton] = await screen.findAllByText('🤍')
+
+	const tooltipPromise = waitFor(
+		() => {
+			const tooltip = screen.getByText('Add favorite')
+			return { tooltip, position: tooltip.getBoundingClientRect() }
+		},
+		{ interval: 0 },
+	)
+
+	fireEvent.focusIn(heartButton)
+
+	const { tooltip, position } = await tooltipPromise
+
+	await new Promise((resolve) => setTimeout(resolve, 250))
+	const newPosition = tooltip.getBoundingClientRect()
+
+	expect(
+		{ x: newPosition.x, y: newPosition.y },
+		'🚨 The tooltip is not correctly positioned initially. Use useLayoutEffect to prevent the incorrect position from being rendered.',
+	).toEqual({
+		x: position.x,
+		y: position.y,
+	})
+})

exercises/07.imperative-handle/01.solution.ref/scroll.test.ts

@@ -0,0 +1,36 @@
+import { expect, testStep, dtl } from '@epic-web/workshop-utils/test'
+const { screen, fireEvent, waitFor } = dtl
+
+import './index.tsx'
+
+await testStep(
+	'Scrollable component handles scroll to top and bottom',
+	async () => {
+		// Find the scroll buttons
+		const scrollTopButton = await screen.findByText(/Scroll to Top/i)
+		const scrollBottomButton = await screen.findByText(/Scroll to Bottom/i)
+
+		// Find the scrollable container
+		const scrollableContainer = screen.getByRole('log')
+
+		// Scroll to bottom
+		fireEvent.click(scrollBottomButton)
+		await waitFor(() => {
+			expect(
+				scrollableContainer.scrollTop,
+				'🚨 Scrollable container should be scrolled to the bottom when the scroll to bottom button is clicked',
+			).toBe(
+				scrollableContainer.scrollHeight - scrollableContainer.clientHeight,
+			)
+		})
+
+		// Scroll to top
+		fireEvent.click(scrollTopButton)
+		await waitFor(() => {
+			expect(
+				scrollableContainer.scrollTop,
+				'🚨 Scrollable container should be scrolled to the top when the scroll to top button is clicked',
+			).toBe(0)
+		})
+	},
+)

exercises/08.focus/01.problem.flush-sync/README.mdx

@@ -29,3 +29,8 @@ test tab focus with. Good luck!
 	This example was uses code from
 	[trellix](https://github.com/remix-run/example-trellix/blob/3379b3d5e9c0173381031e4f062877e8a3696b2e/app/routes/board.%24id/components.tsx).
 </callout-info>
+
+<callout-warning>
+	🚨 Because this deals with focus, you'll need to expand the test and then run
+	it for it to pass.
+</callout-warning>

exercises/08.focus/01.solution.flush-sync/focus.test.ts

@@ -0,0 +1,90 @@
+import { expect, testStep, dtl } from '@epic-web/workshop-utils/test'
+const { screen, fireEvent, waitFor } = dtl
+
+import './index.tsx'
+
+await testStep('EditableText component renders', async () => {
+	const editButton = await screen.findByRole('button', {
+		name: /Edit project name/i,
+	})
+	expect(editButton).toBeTruthy()
+	return editButton
+})
+
+await testStep(
+	'Clicking edit button focuses input and selects text',
+	async () => {
+		const editButton = await screen.findByRole('button', {
+			name: /Edit project name/i,
+		})
+		fireEvent.click(editButton)
+
+		const input = screen.getByRole('textbox', { name: /Edit project name/i })
+		await waitFor(() => {
+			expect(
+				input,
+				'🚨 Input should be focused after clicking edit button',
+			).toHaveFocus()
+			if (!(input instanceof HTMLInputElement)) {
+				throw new Error('Input is not an HTMLInputElement')
+			}
+			expect(
+				input.selectionStart,
+				'🚨 Input text should be fully selected',
+			).toBe(0)
+			expect(input.selectionEnd, '🚨 Input text should be fully selected').toBe(
+				input.value.length,
+			)
+		})
+		return input
+	},
+)
+
+await testStep('Submitting form focuses button', async () => {
+	const input = await screen.findByRole('textbox', {
+		name: /Edit project name/i,
+	})
+	fireEvent.keyDown(input, { key: 'Enter' })
+	fireEvent.submit(input.closest('form')!)
+
+	await waitFor(() => {
+		const newButton = screen.getByRole('button', { name: /Edit project name/i })
+		expect(
+			newButton,
+			'🚨 Button should be focused after submitting',
+		).toHaveFocus()
+	})
+})
+
+await testStep('Canceling edit focuses button', async () => {
+	const editButton = screen.getByRole('button', { name: /Edit project name/i })
+	fireEvent.click(editButton)
+
+	const input = screen.getByRole('textbox', { name: /Edit project name/i })
+	fireEvent.keyDown(input, { key: 'Escape' })
+
+	await waitFor(() => {
+		const newButton = screen.getByRole('button', { name: /Edit project name/i })
+		expect(
+			newButton,
+			'🚨 Button should be focused after canceling',
+		).toHaveFocus()
+	})
+})
+
+await testStep('Blurring input focuses button', async () => {
+	const editButton = screen.getByRole('button', { name: /Edit project name/i })
+	fireEvent.click(editButton)
+
+	const input = screen.getByRole('textbox', { name: /Edit project name/i })
+	fireEvent.blur(input)
+	input.blur()
+
+	await waitFor(() => {
+		const newButton = screen.getByRole('button', { name: /Edit project name/i })
+		expect(
+			newButton,
+			'🚨 Button should be focused after blurring input',
+		).toHaveFocus()
+	})
+})

exercises/09.sync-external/01.problem.sub/index.tsx

@@ -22,4 +22,8 @@ function App() {
 
 const rootEl = document.createElement('div')
 document.body.append(rootEl)
-ReactDOM.createRoot(rootEl).render(<App />)
+const root = ReactDOM.createRoot(rootEl)
+root.render(<App />)
+
+// @ts-expect-error 🚨 this is for the test
+window.__epicReactRoot = root

exercises/09.sync-external/01.solution.sub/index.tsx

@@ -25,4 +25,8 @@ function App() {
 
 const rootEl = document.createElement('div')
 document.body.append(rootEl)
-ReactDOM.createRoot(rootEl).render(<App />)
+const root = ReactDOM.createRoot(rootEl)
+root.render(<App />)
+
+// @ts-expect-error 🚨 this is for the test
+window.__epicReactRoot = root

exercises/09.sync-external/01.solution.sub/sync-media-query.test.ts

@@ -0,0 +1,71 @@
+import { expect, testStep, dtl } from '@epic-web/workshop-utils/test'
+const { screen } = dtl
+
+import './index.tsx'
+
+let mediaQueryCallbacks: Array<(e: { matches: boolean }) => void> = []
+let currentMatches = false
+
+const originalMatchMedia = window.matchMedia
+// @ts-expect-error - meh it's free javascript
+window.matchMedia = (query: string) => ({
+	...originalMatchMedia(query),
+	matches: currentMatches,
+	media: query,
+	addEventListener: (
+		event: string,
+		callback: (e: { matches: boolean }) => void,
+	) => {
+		mediaQueryCallbacks.push(callback)
+	},
+	removeEventListener: (
+		event: string,
+		callback: (e: { matches: boolean }) => void,
+	) => {
+		mediaQueryCallbacks = mediaQueryCallbacks.filter((cb) => cb !== callback)
+	},
+})
+
+function triggerMediaQueryChange(matches: boolean) {
+	currentMatches = matches
+	mediaQueryCallbacks.forEach((callback) => callback({ matches }))
+}
+
+await testStep(
+	'NarrowScreenNotifier renders wide screen message initially',
+	async () => {
+		const message = await screen.findByText('You are on a wide screen')
+		expect(message).toBeTruthy()
+	},
+)
+
+await testStep(
+	'NarrowScreenNotifier updates when media query changes to narrow',
+	async () => {
+		triggerMediaQueryChange(true)
+		const message = await screen.findByText('You are on a narrow screen')
+		expect(message).toBeTruthy()
+	},
+)
+
+await testStep(
+	'NarrowScreenNotifier updates when media query changes back to wide',
+	async () => {
+		triggerMediaQueryChange(false)
+		const message = await screen.findByText('You are on a wide screen')
+		expect(message).toBeTruthy()
+	},
+)
+
+await testStep(
+	'NarrowScreenNotifier removes event listener on unmount',
+	async () => {
+		const initialCallbackCount = mediaQueryCallbacks.length
+		// @ts-expect-error 🚨 this is for the test
+		window.__epicReactRoot.unmount()
+		expect(mediaQueryCallbacks.length).toBe(initialCallbackCount - 1)
+	},
+)
+
+// Cleanup
+window.matchMedia = originalMatchMedia

exercises/09.sync-external/02.problem.util/index.tsx

@@ -34,4 +34,8 @@ function App() {
 
 const rootEl = document.createElement('div')
 document.body.append(rootEl)
-ReactDOM.createRoot(rootEl).render(<App />)
+const root = ReactDOM.createRoot(rootEl)
+root.render(<App />)
+
+// @ts-expect-error 🚨 this is for the test
+window.__epicReactRoot = root

exercises/09.sync-external/02.solution.util/index.tsx

@@ -32,4 +32,8 @@ function App() {
 
 const rootEl = document.createElement('div')
 document.body.append(rootEl)
-ReactDOM.createRoot(rootEl).render(<App />)
+const root = ReactDOM.createRoot(rootEl)
+root.render(<App />)
+
+// @ts-expect-error 🚨 this is for the test
+window.__epicReactRoot = root