rsnext/test/development/acceptance-app/ReactRefreshLogBox.test.ts

/* eslint-env jest */
import { sandbox } from './helpers'
import { createNext, FileRef } from 'e2e-utils'
import { NextInstance } from 'test/lib/next-modes/base'
import { check, getSnapshotTestDescribe } from 'next-test-utils'
import path from 'path'

for (const variant of ['default', 'turbo']) {
  getSnapshotTestDescribe(variant)(`ReactRefreshLogBox app ${variant}`, () => {
    let next: NextInstance

    beforeAll(async () => {
      next = await createNext({
        files: new FileRef(
          path.join(__dirname, 'fixtures', 'default-template')
        ),
        dependencies: {
          react: 'latest',
          'react-dom': 'latest',
        },
        skipStart: true,
      })
    })
    afterAll(() => next.destroy())

    test('should strip whitespace correctly with newline', async () => {
      const { session, cleanup } = await sandbox(next)

      await session.patch(
        'index.js',
        `
        export default function Page() {
          return (
            <>

                          <p>index page</p>

                          <a onClick={() => {
                            throw new Error('idk')
                          }}>
                            click me
                          </a>
            </>
          )
        }
      `
      )
      await session.evaluate(() => document.querySelector('a').click())

      await session.waitForAndOpenRuntimeError()
      expect(await session.getRedboxSource()).toMatchSnapshot()

      await cleanup()
    })

    test('logbox: can recover from a syntax error without losing state', async () => {
      const { session, cleanup } = await sandbox(next)

      await session.patch(
        'index.js',
        `
        import { useCallback, useState } from 'react'

        export default function Index() {
          const [count, setCount] = useState(0)
          const increment = useCallback(() => setCount(c => c + 1), [setCount])
          return (
            <main>
              <p>{count}</p>
              <button onClick={increment}>Increment</button>
            </main>
          )
        }
      `
      )

      await session.evaluate(() => document.querySelector('button').click())
      expect(
        await session.evaluate(() => document.querySelector('p').textContent)
      ).toBe('1')

      await session.patch('index.js', `export default () => <div/`)

      expect(await session.hasRedbox(true)).toBe(true)
      expect(await session.getRedboxSource()).toMatchSnapshot()

      await session.patch(
        'index.js',
        `
        import { useCallback, useState } from 'react'

        export default function Index() {
          const [count, setCount] = useState(0)
          const increment = useCallback(() => setCount(c => c + 1), [setCount])
          return (
            <main>
              <p>Count: {count}</p>
              <button onClick={increment}>Increment</button>
            </main>
          )
        }
      `
      )

      await check(
        () => session.evaluate(() => document.querySelector('p').textContent),
        /Count: 1/
      )

      expect(await session.hasRedbox(false)).toBe(false)

      await cleanup()
    })

    test('logbox: can recover from a event handler error', async () => {
      const { session, cleanup } = await sandbox(next)

      await session.patch(
        'index.js',
        `
        import { useCallback, useState } from 'react'

        export default function Index() {
          const [count, setCount] = useState(0)
          const increment = useCallback(() => {
            setCount(c => c + 1)
            throw new Error('oops')
          }, [setCount])
          return (
            <main>
              <p>{count}</p>
              <button onClick={increment}>Increment</button>
            </main>
          )
        }
      `
      )

      expect(
        await session.evaluate(() => document.querySelector('p').textContent)
      ).toBe('0')
      await session.evaluate(() => document.querySelector('button').click())
      expect(
        await session.evaluate(() => document.querySelector('p').textContent)
      ).toBe('1')

      await session.waitForAndOpenRuntimeError()
      if (process.platform === 'win32') {
        expect(await session.getRedboxSource()).toMatchSnapshot()
      } else {
        expect(await session.getRedboxSource()).toMatchSnapshot()
      }

      await session.patch(
        'index.js',
        `
        import { useCallback, useState } from 'react'

        export default function Index() {
          const [count, setCount] = useState(0)
          const increment = useCallback(() => setCount(c => c + 1), [setCount])
          return (
            <main>
              <p>Count: {count}</p>
              <button onClick={increment}>Increment</button>
            </main>
          )
        }
      `
      )

      expect(await session.hasRedbox(false)).toBe(false)
      expect(await session.hasErrorToast()).toBe(false)

      expect(
        await session.evaluate(() => document.querySelector('p').textContent)
      ).toBe('Count: 1')
      await session.evaluate(() => document.querySelector('button').click())
      expect(
        await session.evaluate(() => document.querySelector('p').textContent)
      ).toBe('Count: 2')

      expect(await session.hasRedbox(false)).toBe(false)
      expect(await session.hasErrorToast()).toBe(false)

      await cleanup()
    })

    test('logbox: can recover from a component error', async () => {
      const { session, cleanup } = await sandbox(next)

      await session.write(
        'child.js',
        `
        export default function Child() {
          return <p>Hello</p>;
        }
      `
      )

      await session.patch(
        'index.js',
        `
        import Child from './child'

        export default function Index() {
          return (
            <main>
              <Child />
            </main>
          )
        }
      `
      )

      expect(
        await session.evaluate(() => document.querySelector('p').textContent)
      ).toBe('Hello')

      await session.patch(
        'child.js',
        `
        // hello
        export default function Child() {
          throw new Error('oops')
        }
      `
      )

      expect(await session.hasRedbox(true)).toBe(true)
      expect(await session.getRedboxSource()).toMatchSnapshot()

      // TODO-APP: re-enable when error recovery doesn't reload the page.
      /* const didNotReload = */ await session.patch(
        'child.js',
        `
        export default function Child() {
          return <p>Hello</p>;
        }
      `
      )

      // TODO-APP: re-enable when error recovery doesn't reload the page.
      // expect(didNotReload).toBe(true)
      expect(await session.hasRedbox(false)).toBe(false)
      expect(
        await session.evaluate(() => document.querySelector('p').textContent)
      ).toBe('Hello')

      await cleanup()
    })

    test('server component can recover from syntax error', async () => {
      const { session, browser, cleanup } = await sandbox(
        next,
        new Map([
          [
            'app/page.js',
            `
          export default function Page() {
            return <p>Hello world</p>
          }
`,
          ],
        ])
      )

      // Add syntax error
      await session.patch(
        'app/page.js',
        `
      export default function Page() {
        return <p>Hello world</p>
`
      )
      expect(await session.hasRedbox(true)).toBe(true)

      // Fix syntax error
      await session.patch(
        'app/page.js',
        `
      export default function Page() {
        return <p>Hello world 2</p>
      }
`
      )

      await check(() => browser.elementByCss('p').text(), 'Hello world 2')
      await cleanup()
    })

    test('server component can recover from component error', async () => {
      const { session, browser, cleanup } = await sandbox(
        next,
        new Map([
          [
            'app/page.js',
            `
          export default function Page() {
            return <p>Hello world</p>
          }
`,
          ],
        ])
      )

      // Add component error
      await session.patch(
        'app/page.js',
        `
      export default function Page() {
        throw new Error("boom")
        return <p>Hello world</p>
      }
`
      )
      expect(await session.hasRedbox(true)).toBe(true)

      // Fix component error
      await session.patch(
        'app/page.js',
        `
      export default function Page() {
        return <p>Hello world 2</p>
      }
`
      )

      expect(await browser.waitForElementByCss('p').text()).toBe(
        'Hello world 2'
      )

      await cleanup()
    })

    // https://github.com/pmmmwh/react-refresh-webpack-plugin/pull/3#issuecomment-554137262
    test('render error not shown right after syntax error', async () => {
      const { session, cleanup } = await sandbox(next)

      // Starting here:
      await session.patch(
        'index.js',
        `
        import * as React from 'react';
        class ClassDefault extends React.Component {
          render() {
            return <h1>Default Export</h1>;
          }
        }

        export default ClassDefault;
      `
      )

      expect(
        await session.evaluate(() => document.querySelector('h1').textContent)
      ).toBe('Default Export')

      // Break it with a syntax error:
      await session.patch(
        'index.js',
        `
        import * as React from 'react';

        class ClassDefault extends React.Component {
          render()
            return <h1>Default Export</h1>;
          }
        }

        export default ClassDefault;
      `
      )
      expect(await session.hasRedbox(true)).toBe(true)

      // Now change the code to introduce a runtime error without fixing the syntax error:
      await session.patch(
        'index.js',
        `
        import * as React from 'react';

        class ClassDefault extends React.Component {
          render()
            throw new Error('nooo');
            return <h1>Default Export</h1>;
          }
        }

        export default ClassDefault;
      `
      )
      expect(await session.hasRedbox(true)).toBe(true)

      // Now fix the syntax error:
      await session.patch(
        'index.js',
        `
        import * as React from 'react';

        class ClassDefault extends React.Component {
          render() {
            throw new Error('nooo');
            return <h1>Default Export</h1>;
          }
        }

        export default ClassDefault;
      `
      )
      expect(await session.hasRedbox(true)).toBe(true)

      await check(async () => {
        const source = await session.getRedboxSource()
        return source?.length > 1 ? 'success' : source
      }, 'success')

      expect(await session.getRedboxSource()).toMatchSnapshot()

      await cleanup()
    })

    // https://github.com/pmmmwh/react-refresh-webpack-plugin/pull/3#issuecomment-554137807
    test('module init error not shown', async () => {
      // Start here:
      const { session, cleanup } = await sandbox(next)

      // We start here.
      await session.patch(
        'index.js',
        `
        import * as React from 'react';
        class ClassDefault extends React.Component {
          render() {
            return <h1>Default Export</h1>;
          }
        }
        export default ClassDefault;
      `
      )

      expect(
        await session.evaluate(() => document.querySelector('h1').textContent)
      ).toBe('Default Export')

      // Add a throw in module init phase:
      await session.patch(
        'index.js',
        `
        // top offset for snapshot
        import * as React from 'react';
        throw new Error('no')
        class ClassDefault extends React.Component {
          render() {
            return <h1>Default Export</h1>;
          }
        }
        export default ClassDefault;
      `
      )

      expect(await session.hasRedbox(true)).toBe(true)
      if (process.platform === 'win32') {
        expect(await session.getRedboxSource()).toMatchSnapshot()
      } else {
        expect(await session.getRedboxSource()).toMatchSnapshot()
      }

      await cleanup()
    })

    // https://github.com/pmmmwh/react-refresh-webpack-plugin/pull/3#issuecomment-554144016
    test('stuck error', async () => {
      const { session, cleanup } = await sandbox(next)

      // We start here.
      await session.patch(
        'index.js',
        `
        import * as React from 'react';

        function FunctionDefault() {
          return <h1>Default Export Function</h1>;
        }

        export default FunctionDefault;
      `
      )

      // We add a new file. Let's call it Foo.js.
      await session.write(
        'Foo.js',
        `
        // intentionally skips export
        export default function Foo() {
          return React.createElement('h1', null, 'Foo');
        }
      `
      )

      // We edit our first file to use it.
      await session.patch(
        'index.js',
        `
        import * as React from 'react';
        import Foo from './Foo';
        function FunctionDefault() {
          return <Foo />;
        }
        export default FunctionDefault;
      `
      )

      // We get an error because Foo didn't import React. Fair.
      expect(await session.hasRedbox(true)).toBe(true)
      expect(await session.getRedboxSource()).toMatchSnapshot()

      // Let's add that to Foo.
      await session.patch(
        'Foo.js',
        `
        import * as React from 'react';
        export default function Foo() {
          return React.createElement('h1', null, 'Foo');
        }
      `
      )

      // Expected: this fixes the problem
      expect(await session.hasRedbox(false)).toBe(false)

      await cleanup()
    })

    // https://github.com/pmmmwh/react-refresh-webpack-plugin/pull/3#issuecomment-554150098
    test('syntax > runtime error', async () => {
      const { session, cleanup } = await sandbox(next)

      // Start here.
      await session.patch(
        'index.js',
        `
        import * as React from 'react';

        export default function FunctionNamed() {
          return <div />
        }
      `
      )
      // TODO: this acts weird without above step
      await session.patch(
        'index.js',
        `
        import * as React from 'react';
        let i = 0
        setInterval(() => {
          i++
          throw Error('no ' + i)
        }, 1000)
        export default function FunctionNamed() {
          return <div />
        }
      `
      )

      await new Promise((resolve) => setTimeout(resolve, 1000))
      await session.waitForAndOpenRuntimeError()
      if (process.platform === 'win32') {
        expect(await session.getRedboxSource()).toMatchSnapshot()
      } else {
        expect(await session.getRedboxSource()).toMatchSnapshot()
      }

      // Make a syntax error.
      await session.patch(
        'index.js',
        `
        import * as React from 'react';
        let i = 0
        setInterval(() => {
          i++
          throw Error('no ' + i)
        }, 1000)
        export default function FunctionNamed() {`
      )

      await new Promise((resolve) => setTimeout(resolve, 1000))
      expect(await session.hasRedbox(true)).toBe(true)
      expect(await session.getRedboxSource()).toMatchSnapshot()

      // Test that runtime error does not take over:
      await new Promise((resolve) => setTimeout(resolve, 2000))
      expect(await session.hasRedbox(true)).toBe(true)
      expect(await session.getRedboxSource()).toMatchSnapshot()

      await cleanup()
    })

    // https://github.com/pmmmwh/react-refresh-webpack-plugin/pull/3#issuecomment-554152127
    test('boundaries', async () => {
      const { session, cleanup } = await sandbox(next)

      await session.write(
        'FunctionDefault.js',
        `
        export default function FunctionDefault() {
          return <h2>hello</h2>
        }
      `
      )
      await session.patch(
        'index.js',
        `
        import FunctionDefault from './FunctionDefault.js'
        import * as React from 'react'
        class ErrorBoundary extends React.Component {
          constructor() {
            super()
            this.state = { hasError: false, error: null };
          }
          static getDerivedStateFromError(error) {
            return {
              hasError: true,
              error
            };
          }
          render() {
            if (this.state.hasError) {
              return this.props.fallback;
            }
            return this.props.children;
          }
        }
        function App() {
          return (
            <ErrorBoundary fallback={<h2>error</h2>}>
              <FunctionDefault />
            </ErrorBoundary>
          );
        }
        export default App;
      `
      )

      expect(
        await session.evaluate(() => document.querySelector('h2').textContent)
      ).toBe('hello')

      await session.write(
        'FunctionDefault.js',
        `export default function FunctionDefault() { throw new Error('no'); }`
      )

      await session.waitForAndOpenRuntimeError()
      expect(await session.getRedboxSource()).toMatchSnapshot()
      expect(
        await session.evaluate(() => document.querySelector('h2').textContent)
      ).toBe('error')

      await cleanup()
    })

    // TODO: investigate why this fails when running outside of the Next.js
    // monorepo e.g. fails when using yarn create next-app
    // https://github.com/vercel/next.js/pull/23203
    test.skip('internal package errors', async () => {
      const { session, cleanup } = await sandbox(next)

      // Make a react build-time error.
      await session.patch(
        'index.js',
        `
        export default function FunctionNamed() {
          return <div>{{}}</div>
        }`
      )

      expect(await session.hasRedbox(true)).toBe(true)
      // We internally only check the script path, not including the line number
      // and error message because the error comes from an external library.
      // This test ensures that the errored script path is correctly resolved.
      expect(await session.getRedboxSource()).toContain(
        `../../../../packages/next/dist/pages/_document.js`
      )

      await cleanup()
    })

    test('unterminated JSX', async () => {
      const { session, cleanup } = await sandbox(next)

      await session.patch(
        'index.js',
        `
        export default () => {
          return (
            <div>
              <p>lol</p>
            </div>
          )
        }
      `
      )

      expect(await session.hasRedbox(false)).toBe(false)

      await session.patch(
        'index.js',
        `
        export default () => {
          return (
            <div>
              <p>lol</p>
            div
          )
        }
      `
      )

      expect(await session.hasRedbox(true)).toBe(true)

      const source = await session.getRedboxSource()
      expect(source).toMatchSnapshot()

      await cleanup()
    })

    // Module trace is only available with webpack 5
    test('conversion to class component (1)', async () => {
      const { session, cleanup } = await sandbox(next)

      await session.write(
        'Child.js',
        `
        export default function ClickCount() {
          return <p>hello</p>
        }
      `
      )

      await session.patch(
        'index.js',
        `
        import Child from './Child';

        export default function Home() {
          return (
            <div>
              <Child />
            </div>
          )
        }
      `
      )

      expect(await session.hasRedbox(false)).toBe(false)
      expect(
        await session.evaluate(() => document.querySelector('p').textContent)
      ).toBe('hello')

      await session.patch(
        'Child.js',
        `
        import { Component } from 'react';
        export default class ClickCount extends Component {
          render() {
            throw new Error()
          }
        }
      `
      )

      expect(await session.hasRedbox(true)).toBe(true)
      expect(await session.getRedboxSource()).toMatchSnapshot()

      await session.patch(
        'Child.js',
        `
      import { Component } from 'react';
        export default class ClickCount extends Component {
          render() {
            return <p>hello new</p>
          }
        }
      `
      )

      expect(await session.hasRedbox(false)).toBe(false)
      expect(
        await session.evaluate(() => document.querySelector('p').textContent)
      ).toBe('hello new')

      await cleanup()
    })

    test('css syntax errors', async () => {
      const { session, cleanup } = await sandbox(next)

      await session.write('index.module.css', `.button {}`)
      await session.patch(
        'index.js',
        `
        import './index.module.css';
        export default () => {
          return (
            <div>
              <p>lol</p>
            </div>
          )
        }
      `
      )

      expect(await session.hasRedbox(false)).toBe(false)

      // Syntax error
      await session.patch('index.module.css', `.button {`)
      expect(await session.hasRedbox(true)).toBe(true)
      const source = await session.getRedboxSource()
      expect(source).toMatch('./index.module.css:1:1')
      expect(source).toMatch('Syntax error: ')
      expect(source).toMatch('Unclosed block')
      expect(source).toMatch('> 1 | .button {')
      expect(source).toMatch('    | ^')

      // Not local error
      await session.patch('index.module.css', `button {}`)
      expect(await session.hasRedbox(true)).toBe(true)
      const source2 = await session.getRedboxSource()
      expect(source2).toMatchSnapshot()

      await cleanup()
    })

    test('logbox: anchors links in error messages', async () => {
      const { session, cleanup } = await sandbox(next)

      await session.patch(
        'index.js',
        `
        import { useCallback } from 'react'

        export default function Index() {
          const boom = useCallback(() => {
            throw new Error('end http://nextjs.org')
          }, [])
          return (
            <main>
              <button onClick={boom}>Boom!</button>
            </main>
          )
        }
      `
      )

      await session.evaluate(() => document.querySelector('button').click())
      await session.waitForAndOpenRuntimeError()

      const header = await session.getRedboxDescription()
      expect(header).toMatchSnapshot()
      expect(
        await session.evaluate(
          () =>
            document
              .querySelector('body > nextjs-portal')
              .shadowRoot.querySelectorAll('#nextjs__container_errors_desc a')
              .length
        )
      ).toBe(1)
      expect(
        await session.evaluate(
          () =>
            (
              document
                .querySelector('body > nextjs-portal')
                .shadowRoot.querySelector(
                  '#nextjs__container_errors_desc a:nth-of-type(1)'
                ) as any
            ).href
        )
      ).toMatchSnapshot()

      await session.patch(
        'index.js',
        `
        import { useCallback } from 'react'

        export default function Index() {
          const boom = useCallback(() => {
            throw new Error('http://nextjs.org start')
          }, [])
          return (
            <main>
              <button onClick={boom}>Boom!</button>
            </main>
          )
        }
      `
      )

      await session.evaluate(() => document.querySelector('button').click())
      await session.waitForAndOpenRuntimeError()

      const header2 = await session.getRedboxDescription()
      expect(header2).toMatchSnapshot()
      expect(
        await session.evaluate(
          () =>
            document
              .querySelector('body > nextjs-portal')
              .shadowRoot.querySelectorAll('#nextjs__container_errors_desc a')
              .length
        )
      ).toBe(1)
      expect(
        await session.evaluate(
          () =>
            (
              document
                .querySelector('body > nextjs-portal')
                .shadowRoot.querySelector(
                  '#nextjs__container_errors_desc a:nth-of-type(1)'
                ) as any
            ).href
        )
      ).toMatchSnapshot()

      await session.patch(
        'index.js',
        `
        import { useCallback } from 'react'

        export default function Index() {
          const boom = useCallback(() => {
            throw new Error('middle http://nextjs.org end')
          }, [])
          return (
            <main>
              <button onClick={boom}>Boom!</button>
            </main>
          )
        }
      `
      )

      await session.evaluate(() => document.querySelector('button').click())
      await session.waitForAndOpenRuntimeError()

      const header3 = await session.getRedboxDescription()
      expect(header3).toMatchSnapshot()
      expect(
        await session.evaluate(
          () =>
            document
              .querySelector('body > nextjs-portal')
              .shadowRoot.querySelectorAll('#nextjs__container_errors_desc a')
              .length
        )
      ).toBe(1)
      expect(
        await session.evaluate(
          () =>
            (
              document
                .querySelector('body > nextjs-portal')
                .shadowRoot.querySelector(
                  '#nextjs__container_errors_desc a:nth-of-type(1)'
                ) as any
            ).href
        )
      ).toMatchSnapshot()

      await session.patch(
        'index.js',
        `
        import { useCallback } from 'react'

        export default function Index() {
          const boom = useCallback(() => {
            throw new Error('multiple http://nextjs.org links http://example.com')
          }, [])
          return (
            <main>
              <button onClick={boom}>Boom!</button>
            </main>
          )
        }
      `
      )

      await session.evaluate(() => document.querySelector('button').click())
      await session.waitForAndOpenRuntimeError()

      const header4 = await session.getRedboxDescription()
      expect(header4).toMatchInlineSnapshot(
        `"Error: multiple http://nextjs.org links http://example.com"`
      )
      expect(
        await session.evaluate(
          () =>
            document
              .querySelector('body > nextjs-portal')
              .shadowRoot.querySelectorAll('#nextjs__container_errors_desc a')
              .length
        )
      ).toBe(2)
      expect(
        await session.evaluate(
          () =>
            (
              document
                .querySelector('body > nextjs-portal')
                .shadowRoot.querySelector(
                  '#nextjs__container_errors_desc a:nth-of-type(1)'
                ) as any
            ).href
        )
      ).toMatchSnapshot()
      expect(
        await session.evaluate(
          () =>
            (
              document
                .querySelector('body > nextjs-portal')
                .shadowRoot.querySelector(
                  '#nextjs__container_errors_desc a:nth-of-type(2)'
                ) as any
            ).href
        )
      ).toMatchSnapshot()

      await cleanup()
    })

    // TODO-APP: Catch errors that happen before useEffect
    test.skip('non-Error errors are handled properly', async () => {
      const { session, cleanup } = await sandbox(next)

      await session.patch(
        'index.js',
        `
        export default () => {
          throw {'a': 1, 'b': 'x'};
          return (
            <div>hello</div>
          )
        }
      `
      )

      expect(await session.hasRedbox(true)).toBe(true)
      expect(await session.getRedboxDescription()).toMatchInlineSnapshot(
        `"Error: {\\"a\\":1,\\"b\\":\\"x\\"}"`
      )

      // fix previous error
      await session.patch(
        'index.js',
        `
        export default () => {
          return (
            <div>hello</div>
          )
        }
      `
      )
      expect(await session.hasRedbox(false)).toBe(false)
      await session.patch(
        'index.js',
        `
        class Hello {}

        export default () => {
          throw Hello
          return (
            <div>hello</div>
          )
        }
      `
      )
      expect(await session.hasRedbox(true)).toBe(true)
      expect(await session.getRedboxDescription()).toContain(
        `Error: class Hello {`
      )

      // fix previous error
      await session.patch(
        'index.js',
        `
        export default () => {
          return (
            <div>hello</div>
          )
        }
      `
      )
      expect(await session.hasRedbox(false)).toBe(false)
      await session.patch(
        'index.js',
        `
        export default () => {
          throw "string error"
          return (
            <div>hello</div>
          )
        }
      `
      )
      expect(await session.hasRedbox(true)).toBe(true)
      expect(await session.getRedboxDescription()).toMatchInlineSnapshot(
        `"Error: string error"`
      )

      // fix previous error
      await session.patch(
        'index.js',
        `
        export default () => {
          return (
            <div>hello</div>
          )
        }
      `
      )
      expect(await session.hasRedbox(false)).toBe(false)
      await session.patch(
        'index.js',
        `
        export default () => {
          throw null
          return (
            <div>hello</div>
          )
        }
      `
      )
      expect(await session.hasRedbox(true)).toBe(true)
      expect(await session.getRedboxDescription()).toContain(
        `Error: A null error was thrown`
      )

      await cleanup()
    })

    test('Should not show __webpack_exports__ when exporting anonymous arrow function', async () => {
      const { session, cleanup } = await sandbox(next)

      await session.patch(
        'index.js',
        `
       export default () => {
        if (typeof window !== 'undefined') {
          throw new Error('test')
        }

        return null
       }

      `
      )

      expect(await session.hasRedbox(true)).toBe(true)
      expect(await session.getRedboxSource()).toMatchSnapshot()

      await cleanup()
    })

    test('Unhandled errors and rejections opens up in the minimized state', async () => {
      const { session, browser, cleanup } = await sandbox(next)

      const file = `
    export default function Index() {
      //
      setTimeout(() => {
        throw new Error('Unhandled error')
      }, 0)
      setTimeout(() => {
        Promise.reject(new Error('Undhandled rejection'))
      }, 0)
      return (
        <>
          <button
            id="unhandled-error"
            onClick={() => {
              throw new Error('Unhandled error')
            }}
          >
            Unhandled error
          </button>
          <button
            id="unhandled-rejection"
            onClick={() => {
              Promise.reject(new Error('Undhandled rejection'))
            }}
          >
            Unhandled rejection
          </button>
        </>
      )
    }
    `

      await session.patch('index.js', file)

      // Unhandled error and rejection in setTimeout
      expect(
        await browser.waitForElementByCss('.nextjs-toast-errors').text()
      ).toBe('2 errors')

      // Unhandled error in event handler
      await browser.elementById('unhandled-error').click()
      await check(
        () => browser.elementByCss('.nextjs-toast-errors').text(),
        /3 errors/
      )

      // Unhandled rejection in event handler
      await browser.elementById('unhandled-rejection').click()
      await check(
        () => browser.elementByCss('.nextjs-toast-errors').text(),
        /4 errors/
      )
      expect(await session.hasRedbox(false)).toBe(false)

      // Add Component error
      await session.patch(
        'index.js',
        file.replace(
          '//',
          "if (typeof window !== 'undefined') throw new Error('Component error')"
        )
      )

      // Render error should "win" and show up in fullscreen
      expect(await session.hasRedbox(true)).toBe(true)

      await cleanup()
    })

    test.each([['server'], ['client']])(
      'Call stack count is correct for %s error',
      async (pageType: string) => {
        const fixture =
          pageType === 'server'
            ? new Map([
                [
                  'app/page.js',
                  `
        export default function Page() {
          throw new Error('Server error')
        }
`,
                ],
              ])
            : new Map([
                [
                  'app/page.js',
                  `
        'use client'
        export default function Page() {
          if (typeof window !== 'undefined') {
            throw new Error('Client error')
          }
          return null
        }
`,
                ],
              ])

        const { session, browser, cleanup } = await sandbox(next, fixture)

        const getCallStackCount = async () =>
          (await browser.elementsByCss('[data-nextjs-call-stack-frame]')).length

        expect(await session.hasRedbox(true)).toBe(true)

        // Open full Call Stack
        await browser
          .elementByCss('[data-nextjs-data-runtime-error-collapsed-action]')
          .click()

        const collapsedFrameworkGroups = await browser.elementsByCss(
          "[data-nextjs-call-stack-framework-button][data-state='closed']"
        )
        for (const collapsedFrameworkButton of collapsedFrameworkGroups) {
          // Open the collapsed framework groups, the callstack count should increase with each opened group
          const callStackCountBeforeGroupOpened = await getCallStackCount()
          await collapsedFrameworkButton.click()
          expect(await getCallStackCount()).toBeGreaterThan(
            callStackCountBeforeGroupOpened
          )
        }

        // Expect more than the default amount of frames
        // The default stackTraceLimit results in max 9 [data-nextjs-call-stack-frame] elements
        expect(await getCallStackCount()).toBeGreaterThan(9)

        await cleanup()
      }
    )

    test('Server component errors should open up in fullscreen', async () => {
      const { session, browser, cleanup } = await sandbox(
        next,
        new Map([
          // Start with error
          [
            'app/page.js',
            `
        export default function Page() {
          throw new Error('Server component error')
          return <p id="text">Hello world</p>
        }
        `,
          ],
        ])
      )
      expect(await session.hasRedbox(true)).toBe(true)

      // Remove error
      await session.patch(
        'app/page.js',
        `
      export default function Page() {
        return <p id="text">Hello world</p>
      }
      `
      )
      expect(await browser.waitForElementByCss('#text').text()).toBe(
        'Hello world'
      )
      expect(await session.hasRedbox(false)).toBe(false)

      // Re-add error
      await session.patch(
        'app/page.js',
        `
      export default function Page() {
        throw new Error('Server component error!')
        return <p id="text">Hello world</p>
      }
      `
      )

      expect(await session.hasRedbox(true)).toBe(true)

      await cleanup()
    })

    test('Import trace when module not found in layout', async () => {
      const { session, cleanup } = await sandbox(
        next,

        new Map([['app/module.js', `import "non-existing-module"`]])
      )

      await session.patch(
        'app/layout.js',
        `
        import "./module"

        export default function RootLayout({ children }) {
          return (
            <html>
              <head></head>
              <body>{children}</body>
            </html>
          )
        }
        
    `
      )

      expect(await session.hasRedbox(true)).toBe(true)
      expect(await session.getRedboxSource()).toMatchSnapshot()

      await cleanup()
    })

    test("Can't resolve @import in CSS file", async () => {
      const { session, cleanup } = await sandbox(
        next,
        new Map([
          ['app/styles1.css', '@import "./styles2.css"'],
          ['app/styles2.css', '@import "./boom.css"'],
        ])
      )

      await session.patch(
        'app/layout.js',
        `
        import "./styles1.css"

        export default function RootLayout({ children }) {
          return (
            <html>
              <head></head>
              <body>{children}</body>
            </html>
          )
        }
        
    `
      )

      expect(await session.hasRedbox(true)).toBe(true)
      expect(await session.getRedboxSource()).toMatchSnapshot()

      await cleanup()
    })
  })
}