Files
everything-claude-code/tests/hooks/mcp-health-check.test.js
2026-03-20 05:56:21 -07:00

267 lines
8.5 KiB
JavaScript

/**
* Tests for scripts/hooks/mcp-health-check.js
*
* Run with: node tests/hooks/mcp-health-check.test.js
*/
const assert = require('assert');
const fs = require('fs');
const os = require('os');
const path = require('path');
const { spawnSync } = require('child_process');
const script = path.join(__dirname, '..', '..', 'scripts', 'hooks', 'mcp-health-check.js');
function test(name, fn) {
try {
fn();
console.log(`${name}`);
return true;
} catch (err) {
console.log(`${name}`);
console.log(` Error: ${err.message}`);
return false;
}
}
async function asyncTest(name, fn) {
try {
await fn();
console.log(`${name}`);
return true;
} catch (err) {
console.log(`${name}`);
console.log(` Error: ${err.message}`);
return false;
}
}
function createTempDir() {
return fs.mkdtempSync(path.join(os.tmpdir(), 'ecc-mcp-health-'));
}
function cleanupTempDir(dirPath) {
fs.rmSync(dirPath, { recursive: true, force: true });
}
function writeConfig(configPath, body) {
fs.writeFileSync(configPath, JSON.stringify(body, null, 2));
}
function readState(statePath) {
return JSON.parse(fs.readFileSync(statePath, 'utf8'));
}
function createCommandConfig(scriptPath) {
return {
command: process.execPath,
args: [scriptPath]
};
}
function runHook(input, env = {}) {
const result = spawnSync('node', [script], {
input: JSON.stringify(input),
encoding: 'utf8',
env: {
...process.env,
ECC_HOOK_PROFILE: 'standard',
...env
},
timeout: 15000,
stdio: ['pipe', 'pipe', 'pipe']
});
return {
code: result.status || 0,
stdout: result.stdout || '',
stderr: result.stderr || ''
};
}
async function runTests() {
console.log('\n=== Testing mcp-health-check.js ===\n');
let passed = 0;
let failed = 0;
if (test('passes through non-MCP tools untouched', () => {
const result = runHook(
{ tool_name: 'Read', tool_input: { file_path: 'README.md' } },
{ CLAUDE_HOOK_EVENT_NAME: 'PreToolUse' }
);
assert.strictEqual(result.code, 0, 'Expected non-MCP tool to pass through');
assert.strictEqual(result.stderr, '', 'Expected no stderr for non-MCP tool');
})) passed++; else failed++;
if (await asyncTest('marks healthy command MCP servers and allows the tool call', async () => {
const tempDir = createTempDir();
const configPath = path.join(tempDir, 'claude.json');
const statePath = path.join(tempDir, 'mcp-health.json');
const serverScript = path.join(tempDir, 'healthy-server.js');
try {
fs.writeFileSync(serverScript, "setInterval(() => {}, 1000);\n");
writeConfig(configPath, {
mcpServers: {
mock: createCommandConfig(serverScript)
}
});
const input = { tool_name: 'mcp__mock__list_items', tool_input: {} };
const result = runHook(input, {
CLAUDE_HOOK_EVENT_NAME: 'PreToolUse',
ECC_MCP_CONFIG_PATH: configPath,
ECC_MCP_HEALTH_STATE_PATH: statePath,
ECC_MCP_HEALTH_TIMEOUT_MS: '100'
});
assert.strictEqual(result.code, 0, `Expected healthy server to pass, got ${result.code}`);
assert.strictEqual(result.stdout.trim(), JSON.stringify(input), 'Expected original JSON on stdout');
const state = readState(statePath);
assert.strictEqual(state.servers.mock.status, 'healthy', 'Expected mock server to be marked healthy');
} finally {
cleanupTempDir(tempDir);
}
})) passed++; else failed++;
if (await asyncTest('blocks unhealthy command MCP servers and records backoff state', async () => {
const tempDir = createTempDir();
const configPath = path.join(tempDir, 'claude.json');
const statePath = path.join(tempDir, 'mcp-health.json');
const serverScript = path.join(tempDir, 'unhealthy-server.js');
try {
fs.writeFileSync(serverScript, "process.exit(1);\n");
writeConfig(configPath, {
mcpServers: {
flaky: createCommandConfig(serverScript)
}
});
const result = runHook(
{ tool_name: 'mcp__flaky__search', tool_input: {} },
{
CLAUDE_HOOK_EVENT_NAME: 'PreToolUse',
ECC_MCP_CONFIG_PATH: configPath,
ECC_MCP_HEALTH_STATE_PATH: statePath,
ECC_MCP_HEALTH_TIMEOUT_MS: '100'
}
);
assert.strictEqual(result.code, 2, 'Expected unhealthy server to block the MCP tool');
assert.ok(result.stderr.includes('Blocking search'), `Expected blocking message, got: ${result.stderr}`);
const state = readState(statePath);
assert.strictEqual(state.servers.flaky.status, 'unhealthy', 'Expected flaky server to be marked unhealthy');
assert.ok(state.servers.flaky.nextRetryAt > state.servers.flaky.checkedAt, 'Expected retry backoff to be recorded');
} finally {
cleanupTempDir(tempDir);
}
})) passed++; else failed++;
if (await asyncTest('fail-open mode warns but does not block unhealthy MCP servers', async () => {
const tempDir = createTempDir();
const configPath = path.join(tempDir, 'claude.json');
const statePath = path.join(tempDir, 'mcp-health.json');
const serverScript = path.join(tempDir, 'relaxed-server.js');
try {
fs.writeFileSync(serverScript, "process.exit(1);\n");
writeConfig(configPath, {
mcpServers: {
relaxed: createCommandConfig(serverScript)
}
});
const result = runHook(
{ tool_name: 'mcp__relaxed__list', tool_input: {} },
{
CLAUDE_HOOK_EVENT_NAME: 'PreToolUse',
ECC_MCP_CONFIG_PATH: configPath,
ECC_MCP_HEALTH_STATE_PATH: statePath,
ECC_MCP_HEALTH_FAIL_OPEN: '1',
ECC_MCP_HEALTH_TIMEOUT_MS: '100'
}
);
assert.strictEqual(result.code, 0, 'Expected fail-open mode to allow execution');
assert.ok(result.stderr.includes('Blocking list') || result.stderr.includes('fall back'), 'Expected warning output in fail-open mode');
} finally {
cleanupTempDir(tempDir);
}
})) passed++; else failed++;
if (await asyncTest('post-failure reconnect command restores server health when a reprobe succeeds', async () => {
const tempDir = createTempDir();
const configPath = path.join(tempDir, 'claude.json');
const statePath = path.join(tempDir, 'mcp-health.json');
const switchFile = path.join(tempDir, 'server-mode.txt');
const reconnectFile = path.join(tempDir, 'reconnected.txt');
const probeScript = path.join(tempDir, 'probe-server.js');
fs.writeFileSync(switchFile, 'down');
fs.writeFileSync(
probeScript,
[
"const fs = require('fs');",
`const mode = fs.readFileSync(${JSON.stringify(switchFile)}, 'utf8').trim();`,
"if (mode === 'up') { setInterval(() => {}, 1000); } else { console.error('401 Unauthorized'); process.exit(1); }"
].join('\n')
);
const reconnectScript = path.join(tempDir, 'reconnect.js');
fs.writeFileSync(
reconnectScript,
[
"const fs = require('fs');",
`fs.writeFileSync(${JSON.stringify(switchFile)}, 'up');`,
`fs.writeFileSync(${JSON.stringify(reconnectFile)}, 'done');`
].join('\n')
);
try {
writeConfig(configPath, {
mcpServers: {
authy: createCommandConfig(probeScript)
}
});
const result = runHook(
{
tool_name: 'mcp__authy__messages',
tool_input: {},
error: '401 Unauthorized'
},
{
CLAUDE_HOOK_EVENT_NAME: 'PostToolUseFailure',
ECC_MCP_CONFIG_PATH: configPath,
ECC_MCP_HEALTH_STATE_PATH: statePath,
ECC_MCP_RECONNECT_COMMAND: `node ${JSON.stringify(reconnectScript)}`,
ECC_MCP_HEALTH_TIMEOUT_MS: '100'
}
);
assert.strictEqual(result.code, 0, 'Expected failure hook to remain non-blocking');
assert.ok(result.stderr.includes('reported 401'), `Expected reconnect log, got: ${result.stderr}`);
assert.ok(result.stderr.includes('connection restored'), `Expected restored log, got: ${result.stderr}`);
assert.ok(fs.existsSync(reconnectFile), 'Expected reconnect command to run');
const state = readState(statePath);
assert.strictEqual(state.servers.authy.status, 'healthy', 'Expected authy server to be restored after reconnect');
} finally {
cleanupTempDir(tempDir);
}
})) passed++; else failed++;
console.log(`\nResults: Passed: ${passed}, Failed: ${failed}`);
process.exit(failed > 0 ? 1 : 0);
}
runTests().catch(error => {
console.error(error);
process.exit(1);
});