alagarr
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Alagarr is a request-response helper library that removes the boilerplate from your Node.js serverless functions and helps make your code portable.
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JavaScript
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const requests_1 = require("../test/fixtures/requests");
const client_error_1 = __importDefault(require("./errors/client-error"));
const index_1 = __importDefault(require("./index"));
const testRequest = Object.assign({}, requests_1.get, { headers: {} });
function handlerPromise(handler, event = testRequest, context = requests_1.mockContext) {
return new Promise((resolve, reject) => handler(event, context, (error, result) => error ? reject(error) : resolve(result)));
}
describe('Alagarr NPM Package', () => {
test('should have zero non-development dependencies', () => {
const packageJson = require('../package.json');
expect(Object.keys(packageJson.dependencies).length).toBe(0);
});
});
describe('Alagarr', () => {
test('throws error if handler is not provided', () => __awaiter(this, void 0, void 0, function* () {
const handler = index_1.default();
const result = yield handlerPromise(handler);
expect(result.statusCode).toBe(500);
}));
test('can respond with JSON', () => __awaiter(this, void 0, void 0, function* () {
const handler = index_1.default((_, response) => response.json({ foo: 'bar' }, 201), {});
const result = yield handlerPromise(handler);
expect(typeof result.body).toBe('string');
expect(result.body).toBe('{"foo":"bar"}');
expect(result.statusCode).toBe(201);
expect(result.headers['content-type']).toBe('application/json');
}));
test('can catch internal error', () => __awaiter(this, void 0, void 0, function* () {
const handler = index_1.default(() => {
throw new Error('error here');
}, {});
const result = yield handlerPromise(handler);
expect(typeof result.body).toBe('string');
expect(result.body).toBe('<html><body>An internal server error occurred.<br/>Request ID: foobar</body></html>');
expect(result.statusCode).toBe(500);
expect(result.headers['content-type']).toBe('text/html');
}));
test('can catch an error with errorHandler', () => __awaiter(this, void 0, void 0, function* () {
const error = new Error('error here');
const errorHandler = jest.fn((_, response) => response.text('caught'));
const handler = index_1.default(() => {
throw error;
}, {
errorHandler,
});
const result = yield handlerPromise(handler);
expect(result.body).toBe('caught');
}));
test('can catch an error thrown in errorHandler', () => __awaiter(this, void 0, void 0, function* () {
const error = new Error('error here');
const errorHandler = jest.fn(() => {
throw error;
});
const handler = index_1.default(() => {
throw error;
}, {
errorHandler,
});
const result = yield handlerPromise(handler);
expect(typeof result.body).toBe('string');
expect(result.body).toBe('<html><body>An internal server error occurred.<br/>Request ID: foobar</body></html>');
expect(result.statusCode).toBe(500);
expect(result.headers['content-type']).toBe('text/html');
}));
test('can catch ClientError error', () => __awaiter(this, void 0, void 0, function* () {
const handler = index_1.default(() => {
throw new client_error_1.default('error here');
}, {});
const result = yield handlerPromise(handler);
expect(typeof result.body).toBe('string');
expect(result.body).toBe('<html><body><strong>Client Error 400</strong>: error here<br/>Request ID: foobar</body></html>');
expect(result.statusCode).toBe(400);
expect(result.headers['content-type']).toBe('text/html');
}));
});