const test = require('node:test');
const assert = require('node:assert/strict');
const { startServer, readLine, terminate } = require('./util.cjs');
const MCP_INIT = {
jsonrpc: '2.0',
id: 1,
method: 'initialize',
params: {
protocolVersion: '2025-06-18',
capabilities: {},
clientInfo: { name: 'handshake-test', version: '1.0.0' },
},
};
const MCP_LIST = {
jsonrpc: '2.0',
id: 2,
method: 'tools/list',
};
test('STDIO handshake returns initialize response and tools list', async () => {
const proc = startServer();
try {
proc.stdin.write(JSON.stringify(MCP_INIT) + '\n');
const initResp = JSON.parse(await readLine(proc.stdout));
assert.equal(initResp.id, 1);
assert.equal(initResp.result.protocolVersion, '2025-06-18');
assert.equal(initResp.result.capabilities.tools.list, true);
assert.equal(initResp.result.capabilities.tools.call, true);
proc.stdin.write(JSON.stringify(MCP_LIST) + '\n');
const listResp = JSON.parse(await readLine(proc.stdout));
assert.equal(listResp.id, 2);
assert.ok(Array.isArray(listResp.result.tools));
assert.ok(listResp.result.tools.length >= 4);
} finally {
await terminate(proc);
}
});
