fix(node): sync transactional Cursor hooks
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ZacharyZhang-NY committed
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@@ -0,0 +1,262 @@
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import assert from 'node:assert/strict';
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import {
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lstat,
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mkdir,
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readFile,
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readdir,
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symlink,
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writeFile,
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} from 'node:fs/promises';
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import path from 'node:path';
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import test from 'node:test';
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import {
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VALID_PRIVATE_KEY,
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createFixture,
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installationModuleUrl,
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installConfig,
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ioModuleUrl,
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runNode,
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writeJson,
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} from '../test-support/cursor-test-helpers.mjs';
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const managedFileNames = ['guard.js', 'config.json', 'private.key', 'hook.js'];
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async function snapshotInstallation(fixture) {
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const entries = await Promise.all(managedFileNames.map(async (name) => [
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path.join(fixture.agentDir, name),
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await readFile(path.join(fixture.agentDir, name), 'utf-8'),
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]));
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entries.push([fixture.configPath, await readFile(fixture.configPath, 'utf-8')]);
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return new Map(entries);
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}
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async function assertSnapshot(snapshot) {
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for (const [filePath, expected] of snapshot) {
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assert.equal(await readFile(filePath, 'utf-8'), expected, filePath);
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}
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}
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async function assertNoTransactionFiles(fixture) {
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const names = [
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...await readdir(fixture.agentDir),
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...await readdir(path.dirname(fixture.configPath)),
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];
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assert.equal(names.some((name) => /\.(tmp|rollback)$/.test(name)), false);
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}
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test('Cursor rolls back all five files when a transaction commit fails', async () => {
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const fixture = await createFixture();
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try {
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assert.equal((await fixture.install()).code, 0);
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const before = await snapshotInstallation(fixture);
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const source = `
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import { rename } from 'node:fs/promises';
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import { readDocument } from ${JSON.stringify(ioModuleUrl)};
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import {
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commitCursorInstallation,
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prepareCursorInstallation,
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} from ${JSON.stringify(installationModuleUrl)};
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const config = JSON.parse(process.env.ELYDORA_INSTALL_CONFIG);
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const document = await readDocument();
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const prepared = await prepareCursorInstallation(config, { document, changed: false });
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let calls = 0;
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await commitCursorInstallation(prepared, async (from, to) => {
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calls += 1;
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if (calls === 3) throw new Error('injected rename failure');
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await rename(from, to);
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});
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`;
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const result = await runNode(
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['--input-type=module', '--eval', source],
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{
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HOME: fixture.homeDir,
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USERPROFILE: fixture.homeDir,
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ELYDORA_INSTALL_CONFIG: JSON.stringify(installConfig(fixture, {
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orgId: 'org-updated',
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token: 'token-updated',
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})),
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},
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fixture.projectDir,
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);
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assert.equal(result.code, 1);
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assert.match(result.stderr, /injected rename failure/i);
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await assertSnapshot(before);
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await assertNoTransactionFiles(fixture);
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} finally {
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await fixture.close();
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}
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});
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test('Cursor detects concurrent hook config changes before committing runtime updates', async () => {
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const fixture = await createFixture({
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existingConfig: { version: 1, hooks: { sessionStart: [{ command: 'original' }] } },
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});
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try {
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assert.equal((await fixture.install()).code, 0);
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const before = await snapshotInstallation(fixture);
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const concurrent = '{"version":1,"hooks":{"sessionStart":[{"command":"concurrent"}]}}\n';
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const source = `
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import { writeFile } from 'node:fs/promises';
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import { readDocument } from ${JSON.stringify(ioModuleUrl)};
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import {
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commitCursorInstallation,
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prepareCursorInstallation,
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} from ${JSON.stringify(installationModuleUrl)};
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const config = JSON.parse(process.env.ELYDORA_INSTALL_CONFIG);
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const document = await readDocument();
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const prepared = await prepareCursorInstallation(config, { document, changed: false });
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await writeFile(document.filePath, process.env.ELYDORA_CONCURRENT, 'utf-8');
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await commitCursorInstallation(prepared);
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`;
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const result = await runNode(
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['--input-type=module', '--eval', source],
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{
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HOME: fixture.homeDir,
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USERPROFILE: fixture.homeDir,
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ELYDORA_CONCURRENT: concurrent,
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ELYDORA_INSTALL_CONFIG: JSON.stringify(installConfig(fixture, { orgId: 'org-updated' })),
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},
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fixture.projectDir,
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);
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assert.equal(result.code, 1);
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assert.match(result.stderr, /changed during Cursor installation/i);
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for (const [filePath, expected] of before) {
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if (filePath !== fixture.configPath) assert.equal(await readFile(filePath, 'utf-8'), expected);
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}
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assert.equal(await readFile(fixture.configPath, 'utf-8'), concurrent);
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await assertNoTransactionFiles(fixture);
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} finally {
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await fixture.close();
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}
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});
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test('Cursor rejects a stale hook document before staging an installation', async () => {
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const fixture = await createFixture();
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try {
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assert.equal((await fixture.install()).code, 0);
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const before = await snapshotInstallation(fixture);
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const concurrent = '{"version":1,"hooks":{"sessionStart":[{"command":"new"}]}}\n';
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const source = `
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import { writeFile } from 'node:fs/promises';
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import { readDocument } from ${JSON.stringify(ioModuleUrl)};
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import { prepareCursorInstallation } from ${JSON.stringify(installationModuleUrl)};
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const document = await readDocument();
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await writeFile(document.filePath, process.env.ELYDORA_CONCURRENT, 'utf-8');
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await prepareCursorInstallation(
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JSON.parse(process.env.ELYDORA_INSTALL_CONFIG),
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{ document, changed: false },
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);
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`;
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const result = await runNode(
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['--input-type=module', '--eval', source],
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{
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HOME: fixture.homeDir,
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USERPROFILE: fixture.homeDir,
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ELYDORA_CONCURRENT: concurrent,
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ELYDORA_INSTALL_CONFIG: JSON.stringify(installConfig(fixture)),
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},
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fixture.projectDir,
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);
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assert.equal(result.code, 1);
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assert.match(result.stderr, /changed before installation/i);
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for (const [filePath, expected] of before) {
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if (filePath !== fixture.configPath) assert.equal(await readFile(filePath, 'utf-8'), expected);
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}
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assert.equal(await readFile(fixture.configPath, 'utf-8'), concurrent);
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await assertNoTransactionFiles(fixture);
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} finally {
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await fixture.close();
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}
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});
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test('Cursor rejects orphaned runtime artifacts before writing hook config', async () => {
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const fixture = await createFixture();
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try {
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await mkdir(fixture.agentDir, { recursive: true });
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await writeFile(fixture.guardScriptPath, 'orphaned guard\n');
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const result = await fixture.install();
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assert.equal(result.code, 1);
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assert.match(result.stderr, /identity cannot be verified/i);
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assert.equal(await readFile(fixture.guardScriptPath, 'utf-8'), 'orphaned guard\n');
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await assert.rejects(readFile(fixture.configPath), { code: 'ENOENT' });
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} finally {
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await fixture.close();
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}
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});
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test('Cursor rejects a mismatched runtime identity before changing files', async () => {
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const fixture = await createFixture();
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try {
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await writeJson(path.join(fixture.agentDir, 'config.json'), {
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agent_name: 'cursor',
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agent_id: 'another-agent',
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});
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const before = await readFile(path.join(fixture.agentDir, 'config.json'), 'utf-8');
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const result = await fixture.install();
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assert.equal(result.code, 1);
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assert.match(result.stderr, /identity does not match/i);
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assert.equal(await readFile(path.join(fixture.agentDir, 'config.json'), 'utf-8'), before);
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await assert.rejects(readFile(fixture.configPath), { code: 'ENOENT' });
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} finally {
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await fixture.close();
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}
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});
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test('Cursor rejects symbolic-link config and runtime directories before file writes', async (t) => {
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for (const kind of ['cursor', 'runtime']) {
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const fixture = await createFixture();
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try {
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const target = path.join(fixture.rootDir, `${kind}-target`);
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await mkdir(target, { recursive: true });
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const link = kind === 'cursor'
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? path.join(fixture.homeDir, '.cursor')
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: path.join(fixture.homeDir, '.elydora');
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await mkdir(fixture.homeDir, { recursive: true });
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try {
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await symlink(target, link, 'junction');
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} catch (error) {
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if (error?.code === 'EPERM') {
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t.skip(`symbolic links unavailable: ${error.message}`);
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return;
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}
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throw error;
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}
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const result = await fixture.install();
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assert.equal(result.code, 1);
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assert.match(result.stderr, /physical directory/i);
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assert.deepEqual(await readdir(target), []);
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const untouched = kind === 'cursor'
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? path.join(fixture.homeDir, '.elydora')
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: path.join(fixture.homeDir, '.cursor', 'hooks.json');
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await assert.rejects(lstat(untouched), { code: 'ENOENT' });
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} finally {
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await fixture.close();
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}
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}
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});
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test('Cursor CLI preflight rejects malformed hooks before creating runtime files', async () => {
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const fixture = await createFixture({ existingConfig: '{ malformed' });
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try {
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const privateKeyPath = path.join(fixture.rootDir, 'private.key');
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await writeFile(privateKeyPath, VALID_PRIVATE_KEY, { mode: 0o600 });
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const result = await runNode([
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path.resolve('dist/cli.js'),
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'install',
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'--agent', 'cursor',
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'--org_id', 'org-1',
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'--agent_id', 'agent-1',
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'--private_key_file', privateKeyPath,
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'--kid', 'kid-1',
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'--base_url', fixture.baseUrl,
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], {
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HOME: fixture.homeDir,
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USERPROFILE: fixture.homeDir,
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}, fixture.projectDir);
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assert.equal(result.code, 1);
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assert.match(result.stderr, /Cursor user hooks/i);
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await assert.rejects(lstat(path.join(fixture.homeDir, '.elydora')), { code: 'ENOENT' });
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} finally {
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await fixture.close();
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}
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});
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