2025SELab2-project-Dwengo/frontend/tests/setup-backend.ts

42 lines
1.1 KiB
TypeScript

import { spawn } from "child_process";
import { ChildProcess, spawnSync } from "node:child_process";
let backendProcess: ChildProcess;
async function waitForEndpoint(url: string, delay = 1000, retries = 60): Promise<void> {
try {
await fetch(url);
} catch {
// Endpoint is not ready yet
await new Promise((resolve) => setTimeout(resolve, delay));
// Retry
await waitForEndpoint(url, delay, retries - 1);
}
}
export async function setup(): Promise<void> {
// Precompile needed packages
spawnSync("npx", ["tsc", "--build", "tsconfig.json"], {
cwd: `../common`,
stdio: "inherit",
});
// Spin up the backend
backendProcess = spawn("npx", ["tsx", "--env-file=.env.test", "tool/startTestApp.ts"], {
cwd: `../backend`,
stdio: "inherit",
env: {
...process.env,
NODE_ENV: "test",
},
});
// Wait until you can curl the backend
await waitForEndpoint("http://localhost:9876/api");
}
export async function teardown(): Promise<void> {
if (backendProcess) {
backendProcess.kill();
}
}