Fixed test, added '0' infront of the '1' for the date of epoch

Author: jmitchell38488

lib/context.js

@@ -4,7 +4,7 @@ const debug = require('debug')('koa-session:context');
 const Session = require('./session');
 const util = require('./util');
 
-const COOKIE_EXP_DATE = 'Thu, 1 Jan 1970 00:00:00 GMT';
+const COOKIE_EXP_DATE = 'Thu, 01 Jan 1970 00:00:00 GMT';
 const ONE_DAY = 24 * 60 * 60 * 1000;
 
 class ContextSession {

test/cookie.test.js

@@ -261,7 +261,7 @@ describe('Koa Session Cookie', () => {
 
       request(app.listen())
         .get('/')
-        .expect('Set-Cookie', /koa:sess=; path=\/; expires=Thu, 1 Jan 1970 00:00:00 GMT/)
+        .expect('Set-Cookie', /koa:sess=; path=\/; expires=Thu, 01 Jan 1970 00:00:00 GMT/)
         .expect('true')
         .expect(200, done);
     });