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'use strict' const { test } = require('node:test') const FindMyWay = require('..') const rfdc = require('rfdc')({ proto: true }) const customHeaderConstraint = { name: 'requestedBy', storage: function () { const requestedBys = {} return { get: (requestedBy) => { return requestedBys[requestedBy] || null }, set: (requestedBy, store) => { requestedBys[requestedBy] = store } } }, deriveConstraint: (req, ctx, done) => { if (req.headers['user-agent'] === 'wrong') { done(new Error('wrong user-agent')) return } done(null, req.headers['user-agent']) } } test('should derive multiple async constraints', t => { t.plan(2) const customHeaderConstraint2 = rfdc(customHeaderConstraint) customHeaderConstraint2.name = 'requestedBy2' const router = FindMyWay({ constraints: { requestedBy: customHeaderConstraint, requestedBy2: customHeaderConstraint2 } }) router.on('GET', '/', { constraints: { requestedBy: 'node', requestedBy2: 'node' } }, () => 'asyncHandler') router.lookup( { method: 'GET', url: '/', headers: { 'user-agent': 'node' } }, null, (err, result) => { t.assert.equal(err, null) t.assert.equal(result, 'asyncHandler') } ) }) test('lookup should return an error from deriveConstraint', t => { t.plan(2) const router = FindMyWay({ constraints: { requestedBy: customHeaderConstraint } }) router.on('GET', '/', { constraints: { requestedBy: 'node' } }, () => 'asyncHandler') router.lookup( { method: 'GET', url: '/', headers: { 'user-agent': 'wrong' } }, null, (err, result) => { t.assert.deepStrictEqual(err, new Error('wrong user-agent')) t.assert.equal(result, undefined) } ) }) test('should derive sync and async constraints', t => { t.plan(4) const router = FindMyWay({ constraints: { requestedBy: customHeaderConstraint } }) router.on('GET', '/', { constraints: { version: '1.0.0', requestedBy: 'node' } }, () => 'asyncHandlerV1') router.on('GET', '/', { constraints: { version: '2.0.0', requestedBy: 'node' } }, () => 'asyncHandlerV2') router.lookup( { method: 'GET', url: '/', headers: { 'user-agent': 'node', 'accept-version': '1.0.0' } }, null, (err, result) => { t.assert.equal(err, null) t.assert.equal(result, 'asyncHandlerV1') } ) router.lookup( { method: 'GET', url: '/', headers: { 'user-agent': 'node', 'accept-version': '2.0.0' } }, null, (err, result) => { t.assert.equal(err, null) t.assert.equal(result, 'asyncHandlerV2') } ) })