logging-wrap-spec.js

const underTest = require('../src/util/logging-wrap'),
	aws = require('aws-sdk');
describe('loggingWrap', () => {
	'use strict';
	let target, logger, originalMethods;
	beforeEach(() => {
		target = jasmine.createSpyObj('target', ['f1', 'f2']);
		originalMethods = {};
		Object.keys(target).forEach(key => {
			originalMethods[key] = target[key];
		});
		logger = jasmine.createSpy('logger');
	});
	describe('call reporting', () => {
		it('logs the start of each call to a log with a logName prefix', () => {
			const result = underTest(target, { log: logger, logName: 'Service1' });
			result.f1('a', 'b', { c: true });
			expect(logger).toHaveBeenCalledWith('Service1.f1', ['a', 'b', { c: true }]);
		});
		it('proxies calls to underlying functions', () => {
			const result = underTest(target, { log: logger, logName: 'Service1' });
			result.f1('a', 'b', { c: true });
			expect(originalMethods.f1).toHaveBeenCalledWith('a', 'b', { c: true });
		});
		it('does not explode when options are not provided', () => {
			const result = underTest(target);
			result.f1('a', 'b', { c: true });
			expect(originalMethods.f1).toHaveBeenCalled();
		});
		it('does not explode when log is not provided', () => {
			const result = underTest(target, {});
			result.f1('a', 'b', { c: true });
			expect(originalMethods.f1).toHaveBeenCalled();
		});
		it('uses blank logname if it is not provided', () => {
			const result = underTest(target, { log: logger });
			result.f1('a', 'b', { c: true });
			expect(logger).toHaveBeenCalledWith('f1', ['a', 'b', { c: true }]);
		});
	});
	it('wraps API objects', done => {
		const sts = underTest(new aws.STS(), { log: logger, logName: 'sts' });
		sts.getCallerIdentity().promise()
		.then(callerIdentity => {
			expect(callerIdentity.Account).not.toBeUndefined();
			expect(logger).toHaveBeenCalledWith('sts.getCallerIdentity', []);
		})
		.then(done, done.fail);
	});
});