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packwatch/tests/index.test.ts

234 lines
8 KiB
TypeScript

import { promises as fs } from 'fs'
import { tmpdir } from 'os'
import { join, resolve } from 'path'
import packwatch from '../src'
import type { Report } from '../src/types'
let workspace: string | null
function getActualPackageSizeByNodeVersion(nodeVersion: string): string {
if (nodeVersion.startsWith('v14')) return '160'
else if (nodeVersion.startsWith('v16')) return '157'
else if (nodeVersion.startsWith('v18')) return '157'
return 'unknown'
}
async function prepareWorkspace(): Promise<string> {
const workspacePath = await fs.mkdtemp(`${tmpdir()}/`)
workspace = workspacePath
return workspacePath
}
async function cleanUpWorkspace(paths: string[]): Promise<void> {
await Promise.all(paths.map(async (path) => fs.rmdir(path, { recursive: true })))
}
async function createFile(path: string, content: string): Promise<void> {
await fs.writeFile(path, content)
}
async function createPackageJson(cwd: string): Promise<void> {
const path = resolve(join(cwd, 'package.json'))
await createFile(path, '{ "name": "wow", "version": "0.0.0", "files": ["!.packwatch.json"] }')
}
async function createManifest(cwd: string, configuration: Report): Promise<void> {
const path = resolve(join(cwd, '.packwatch.json'))
await createFile(path, JSON.stringify(configuration))
}
describe('Packwatch', () => {
const actualSize = getActualPackageSizeByNodeVersion(process.version)
afterEach(async () => {
jest.restoreAllMocks()
if (workspace) {
await cleanUpWorkspace([workspace])
workspace = null
}
})
it('warns the user and errors if run away from package.json', async () => {
const workspacePath = await prepareWorkspace()
const mockLogger = jest.spyOn(console, 'log')
await expect(async () => packwatch({ cwd: workspacePath })).rejects.toThrow('NOT_IN_PACKAGE_ROOT')
expect(mockLogger.mock.calls).toHaveLength(1)
expect(mockLogger.mock.calls[0][0]).toEqual(
expect.stringMatching('There is no package.json file here. Are you in the root directory of your project?'),
)
})
describe('without manifest', () => {
it('generates the initial manifest properly', async () => {
const workspacePath = await prepareWorkspace()
await createPackageJson(workspacePath)
await expect(async () => packwatch({ cwd: workspacePath })).rejects.toThrow('NO_MANIFEST_NO_UPDATE')
const generatedManifest = await fs.readFile(resolve(join(workspacePath, '.packwatch.json')), { encoding: 'utf8' })
expect(generatedManifest).toBe(
`{"limit":"${actualSize} B","packageSize":"${actualSize} B","unpackedSize":"68 B"}`,
)
})
it('outputs expected messaging', async () => {
const workspacePath = await prepareWorkspace()
const mockWarn = jest.spyOn(console, 'warn')
const mockError = jest.spyOn(console, 'error')
await createPackageJson(workspacePath)
await expect(async () => packwatch({ cwd: workspacePath })).rejects.toThrow()
expect(mockWarn.mock.calls).toHaveLength(1)
expect(mockWarn.mock.calls[0][0]).toEqual(
expect.stringMatching(
/No Manifest to compare against! Current package stats written to \.packwatch\.json!\nPackage size \(\d+ B\) adopted as new limit\./,
),
)
expect(mockError.mock.calls).toHaveLength(1)
expect(mockError.mock.calls[0][0]).toEqual(
expect.stringMatching(
'It looks like you ran PackWatch without a manifest. To prevent accidental passes in CI or hooks, packwatch will terminate with an error. If you are running packwatch for the first time in your project, this is expected!',
),
)
})
it('outputs expected messaging when not updating the manifest', async () => {
const mockWarn = jest.spyOn(console, 'warn')
const workspacePath = await prepareWorkspace()
await createPackageJson(workspacePath)
await packwatch({ cwd: workspacePath, isUpdatingManifest: true })
expect(mockWarn.mock.calls).toHaveLength(1)
expect(mockWarn.mock.calls[0][0]).toEqual(
expect.stringMatching(
/No Manifest to compare against! Current package stats written to \.packwatch\.json!\nPackage size \(\d+ B\) adopted as new limit\./,
),
)
})
})
describe('with manifest', () => {
it('messages when the size is equal to the limit', async () => {
const workspacePath = await prepareWorkspace()
const mockLogger = jest.spyOn(console, 'log')
await createPackageJson(workspacePath)
await createManifest(workspacePath, {
limit: `${actualSize}B`,
packageSize: `${actualSize}B`,
packageSizeBytes: Number(actualSize),
unpackedSize: '150B',
unpackedSizeBytes: 150,
})
await packwatch({ cwd: workspacePath })
expect(mockLogger.mock.calls).toHaveLength(1)
expect(mockLogger.mock.calls[0][0]).toEqual(
expect.stringMatching(/Nothing to report! Your package is the same size as the latest manifest reports!/),
)
})
it('messages when the size is lower than the limit (no growth)', async () => {
const workspacePath = await prepareWorkspace()
const mockLogger = jest.spyOn(console, 'log')
await createPackageJson(workspacePath)
await createManifest(workspacePath, {
limit: '170B',
packageSize: `${actualSize}B`,
packageSizeBytes: Number(actualSize),
unpackedSize: '150B',
unpackedSizeBytes: 150,
})
await packwatch({ cwd: workspacePath })
expect(mockLogger.mock.calls).toHaveLength(1)
expect(mockLogger.mock.calls[0][0]).toEqual(
expect.stringMatching(
/Nothing to report! Your package is the same size as the latest manifest reports! \(Limit: 170B\)/,
),
)
})
it('messages when the size is lower than the limit (growth)', async () => {
const workspacePath = await prepareWorkspace()
const mockLogger = jest.spyOn(console, 'log')
await createPackageJson(workspacePath)
await createManifest(workspacePath, {
limit: '180B',
packageSize: '150B',
packageSizeBytes: 150,
unpackedSize: '140B',
unpackedSizeBytes: 140,
})
await packwatch({ cwd: workspacePath })
expect(mockLogger.mock.calls).toHaveLength(1)
expect(mockLogger.mock.calls[0][0]).toEqual(
expect.stringMatching(/Your package grew! \d+ B > 150B \(Limit: 180B\)/),
)
})
it('messages when the size is lower than the limit (shrinkage)', async () => {
const workspacePath = await prepareWorkspace()
const mockLogger = jest.spyOn(console, 'log')
await createPackageJson(workspacePath)
await createManifest(workspacePath, {
limit: '180B',
packageSize: '170B',
packageSizeBytes: 170,
unpackedSize: '140B',
unpackedSizeBytes: 140,
})
await packwatch({ cwd: workspacePath })
expect(mockLogger.mock.calls).toHaveLength(1)
expect(mockLogger.mock.calls[0][0]).toEqual(
expect.stringMatching(/Your package shrank! \d+ B < 170B \(Limit: 180B\)/),
)
})
it('messages when the size exceeds the limit', async () => {
const workspacePath = await prepareWorkspace()
const mockError = jest.spyOn(console, 'error')
await createPackageJson(workspacePath)
await createManifest(workspacePath, {
limit: '10B',
packageSize: '170B',
packageSizeBytes: 170,
unpackedSize: '140B',
unpackedSizeBytes: 140,
})
await expect(async () => packwatch({ cwd: workspacePath })).rejects.toThrow('PACKAGE_EXCEEDS_LIMIT')
expect(mockError.mock.calls).toHaveLength(1)
expect(mockError.mock.calls[0][0]).toEqual(
expect.stringMatching(
/Your package exceeds the limit set in \.packwatch\.json! \d+ B > 10B\nEither update the limit by using the --update-manifest flag or trim down your packed files!/,
),
)
})
it('messages when updating the manifest', async () => {
const workspacePath = await prepareWorkspace()
const mockLogger = jest.spyOn(console, 'log')
await createPackageJson(workspacePath)
await createManifest(workspacePath, {
limit: '10B',
packageSize: '170B',
packageSizeBytes: 170,
unpackedSize: '140B',
unpackedSizeBytes: 140,
})
await packwatch({ cwd: workspacePath, isUpdatingManifest: true })
expect(mockLogger.mock.calls).toHaveLength(1)
expect(mockLogger.mock.calls[0][0]).toEqual(
expect.stringMatching(/Updated the manifest! Package size: \d+ B, Limit: \d+ B/),
)
})
})
})