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import { once } from 'node:events'
import * as cp from 'node:child_process'
import { mkdir, writeFile, chmod } from 'fs/promises'
import { join } from 'path'
export const tests = []
const fetch = _fetch // to redefine the real fetch
const port = 5000
export const setup = async ({ randStr }) => {
const dir = '.'
await mkdir(`${dir}/guests`, { recursive: true })
const randLastName = randStr()
const createFilesIn = ({ files, dirPath }) =>
Promise.all(
files.map(([fileName, content]) =>
writeFile(`${dirPath}/${fileName}`, JSON.stringify(content)),
),
)
const sendRequest = async (path, options) => {
const response = await fetch(`http://localhost:${port}${path}`, options)
const { status } = response
const headers = Object.fromEntries(response.headers)
let body = ''
try {
body = await response.json()
} catch (err) {
body = err
}
return { status, body, headers, randLastName }
}
return { tmpPath: dir, createFilesIn, sendRequest }
}
tests.push(async ({ path, ctx: { server } }) => {
server = cp.spawn('node', [`${path}`])
const message = await Promise.race([
once(server.stdout, 'data'),
Promise.race([
once(server.stderr, 'data').then(String).then(Error),
once(server, 'error'),
]).then(result => Promise.reject(result)),
])
return message[0].toString().includes(port)
})
tests.push(async ({ eq, ctx, randStr }) => {
// test for one guest
const randMsg = randStr()
const expBody = { message: randMsg }
const files = [[`mario_${ctx.randLastName}.json`, expBody]]
const dirName = 'guests'
const dirPath = join(ctx.tmpPath, dirName)
await ctx.createFilesIn({ dirPath, files })
const { status, body, headers } = await ctx.sendRequest(
`/mario_${ctx.randLastName}`,
{
method: 'GET',
},
)
return eq(
{
status: status,
body: body,
contentType: headers['content-type'],
},
{
status: 200,
body: expBody,
contentType: 'application/json',
},
)
})
tests.push(async ({ eq, ctx }) => {
// test server failed
// change permission for existing file
await chmod(`${ctx.tmpPath}/guests/mario_${ctx.randLastName}.json`, 0)
const { status, body, headers } = await ctx.sendRequest(
`/mario_${ctx.randLastName}`,
{
method: 'GET',
},
)
return eq(
{
status: status,
body: body,
contentType: headers['content-type'],
},
{
status: 500,
body: { error: 'server failed' },
contentType: 'application/json',
},
)
})
tests.push(async ({ eq, ctx }) => {
// test guest not there
const { status, body, headers } = await ctx.sendRequest('/andrea_bianchi', {
method: 'GET',
})
return eq(
{
status: status,
body: body,
contentType: headers['content-type'],
},
{
status: 404,
body: { error: 'guest not found' },
contentType: 'application/json',
},
)
})
Object.freeze(tests)