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/**
* A fake cep.is, stood up with `Bun.serve` so the browser tests never touch the
* network. Same shapes and status codes as the real API, plus the counters the
* tests assert on.
*
* @module
*/
const ADDRESSES = {
"01001000": {
cep: "01001000",
logradouro: "Praça da Sé",
complemento: "lado ímpar",
unidade: "",
bairro: "Sé",
localidade: "São Paulo",
uf: "SP",
estado: "São Paulo",
regiao: "Sudeste",
ibge: "3550308",
gia: "1004",
ddd: "11",
siafi: "7107",
geo: { lat: -23.567202, lon: -46.649659, raio_m: 1084, precisao: "logradouro" },
},
20040020: {
cep: "20040020",
logradouro: "Avenida Rio Branco",
complemento: "até 0999 - lado ímpar",
unidade: "",
bairro: "Centro",
localidade: "Rio de Janeiro",
uf: "RJ",
estado: "Rio de Janeiro",
regiao: "Sudeste",
ibge: "3304557",
gia: "",
ddd: "21",
siafi: "6001",
},
};
/**
* The `faixa` a 404 carries when the CEP falls inside a municipality that
* simply never received that number. `25845000` is the real Areal/RJ shape —
* the `-000` that municipality never got. `25845999` is deliberately broken,
* so the tests can prove a malformed `faixa` degrades to the plain message.
*/
const FAIXAS = {
25845000: {
localidade: "Areal",
uf: "RJ",
estado: "Rio de Janeiro",
regiao: "Sudeste",
ibge: "3300225",
cep_ini: "25845001",
cep_fim: "25849899",
ceps: 118,
},
25845999: { uf: "RJ", cep_ini: 25845001 },
};
const CORS = {
"Access-Control-Allow-Origin": "*",
"Content-Type": "application/json; charset=utf-8",
};
/**
* Start the fake API on an ephemeral port.
*
* The returned `state` is live: set `state.delays[cep]` to hold a response
* back, or `state.force` to `{status}` to make every route fail. `requests`
* lists every CEP asked for, and `aborted` counts the requests the browser
* dropped mid-flight.
*
* @returns {{url: string, state: {requests: string[], aborted: number, delays: Record<string, number>, force: {status: number}|null}, reset: () => void, stop: () => void}}
*/
export function startApi() {
const state = { requests: [], aborted: 0, delays: {}, force: null };
const server = Bun.serve({
port: 0,
hostname: "127.0.0.1",
async fetch(request) {
const path = new URL(request.url).pathname.slice(1);
state.requests.push(path);
request.signal.addEventListener("abort", () => {
state.aborted += 1;
});
const delay = state.delays[path] ?? 0;
if (delay > 0) {
await Bun.sleep(delay);
}
if (request.signal.aborted) {
return new Response(null, { status: 499 });
}
if (state.force) {
return new Response(JSON.stringify({ erro: "interno", mensagem: "falha interna" }), {
status: state.force.status,
headers: {
...CORS,
...(state.force.status === 429 ? { "Retry-After": "3" } : {}),
},
});
}
if (!/^\d{8}$/.test(path)) {
return new Response(
JSON.stringify({ erro: "cep_invalido", mensagem: "CEP deve ter 8 dígitos" }),
{ status: 400, headers: CORS },
);
}
if (path === "88888888") {
return new Response(JSON.stringify({ erro: "interno", mensagem: "falha interna" }), {
status: 500,
headers: CORS,
});
}
if (path === "77777777") {
return new Response(JSON.stringify({ erro: "limite", mensagem: "muitas consultas" }), {
status: 429,
headers: { ...CORS, "Retry-After": "3" },
});
}
const address = ADDRESSES[path];
if (!address) {
const faixa = FAIXAS[path];
return new Response(
JSON.stringify({
erro: "cep_nao_encontrado",
mensagem: "CEP não existe na base do DNE",
...(faixa ? { faixa } : {}),
}),
{ status: 404, headers: CORS },
);
}
return new Response(JSON.stringify(address), { status: 200, headers: CORS });
},
});
return {
url: `http://127.0.0.1:${server.port}`,
state,
reset() {
state.requests.length = 0;
state.aborted = 0;
state.delays = {};
state.force = null;
},
stop() {
server.stop(true);
},
};
}
/**
* Serve the checkout fixture page together with a freshly built `<script>`
* bundle of the widget, so the tests exercise the file consumers actually
* drop into a page.
*
* @returns {Promise<{url: string, stop: () => void}>}
*/
export async function startPage() {
const build = await Bun.build({
entrypoints: [new URL("../src/global.js", import.meta.url).pathname],
target: "browser",
format: "iife",
});
if (!build.success) {
throw new AggregateError(build.logs, "could not build the widget");
}
const bundle = await build.outputs[0].text();
const fixture = await Bun.file(new URL("./fixture.html", import.meta.url).pathname).text();
const server = Bun.serve({
port: 0,
hostname: "127.0.0.1",
fetch(request) {
const path = new URL(request.url).pathname;
if (path === "/cepis-autofill.js") {
return new Response(bundle, {
headers: { "Content-Type": "text/javascript; charset=utf-8" },
});
}
return new Response(fixture, { headers: { "Content-Type": "text/html; charset=utf-8" } });
},
});
return {
url: `http://127.0.0.1:${server.port}/`,
stop() {
server.stop(true);
},
};
}
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