Add a delay parameter for responses.

Basic support for specifying that a response should be delay be an amount of millis.

lib/server.js

@@ -85,6 +85,7 @@ function Interfake(o) {
 		app[specifiedRequest.method](specifiedRequest.url, function (req, res) {
 			var specifiedResponse = req.route.responseData;
 			var afterSpecifiedResponse = req.route.afterResponseData;
+			var responseDelay = specifiedResponse.delay || 0;
 
 			debug(req.method, 'request to', req.url, 'returning', specifiedResponse.code);
 			// debug('After response is', afterSpecifiedResponse);
@@ -98,15 +99,16 @@ function Interfake(o) {
 				if (typeof responseBody !== 'string') responseBody = JSON.stringify(responseBody);
 				responseBody = req.query.callback.trim() + '(' + responseBody + ');';
 			}
+			setTimeout(function() {
+				res.send(specifiedResponse.code, responseBody);
 
-			res.send(specifiedResponse.code, responseBody);
-
-			if (afterSpecifiedResponse && afterSpecifiedResponse.endpoints) {
-				debug('Response sent, setting up', afterSpecifiedResponse.endpoints.length, 'endpoints');
-				afterSpecifiedResponse.endpoints.forEach(function (endpoint) {
-					createRoute(endpoint);
-				});
-			}
+				if (afterSpecifiedResponse && afterSpecifiedResponse.endpoints) {
+					debug('Response sent, setting up', afterSpecifiedResponse.endpoints.length, 'endpoints');
+					afterSpecifiedResponse.endpoints.forEach(function (endpoint) {
+						createRoute(endpoint);
+					});
+				}
+			}, responseDelay)
 		});
 
 		setRouteProperty(specifiedRequest, 'responseData', data.response);

tests/javascript.test.js

@@ -250,6 +250,39 @@ describe('Interfake JavaScript API', function () {
 				done();
 			});
 		});
+
+		it('should create one GET endpoint with support for delaying the response', function (done) {
+			var interfake = new Interfake();
+			var enoughTimeHasPassed = false;
+			var _this = this;
+			this.slow(500)
+			interfake.createRoute({
+				request: {
+					url: '/test',
+					method: 'get'
+				},
+				response: {
+					code: 200,
+					delay: 200,
+					body: {
+						hi: 'there'
+					}
+				}
+			});
+			interfake.listen(3000);
+			timer = setTimeout(function() {
+				enoughTimeHasPassed = true;
+			}, 200)
+			request({ url : 'http://localhost:3000/test', json : true }, function (error, response, body) {
+				assert.equal(response.statusCode, 200);
+				assert.equal(body.hi, 'there');
+				interfake.stop();
+				if(!enoughTimeHasPassed) {
+					throw new Error('Response wasn\'t delay for long enough');
+				}
+				done();
+			});
+		});
 	});
 	
 	// Testing the fluent interface