Okay, so let's start out with a little manual test to see if it's working. 0:00 Now, we could definitely write up some JavaScript to test it out, but 0:04 there are better ways. 0:07 A super handy Chrome web app that I use to test my rest APIs is called Postman. 0:09 Installation instructions are in the teacher's notes. 0:14 Let me show you how to test your APIs. 0:17 All right, so I was reviewing the code that we just wrote and 0:20 I found a couple mistakes in the same line. 0:22 It happens, totally happens, these are mistakes, we all make them. 0:25 At the end of this extremely long line that's right here, 0:29 the very end of this, I forgot to add the final closing single quote. 0:33 Maybe you saw that when I did that. 0:38 The other thing that I forgot to do is that there's extra parameters here. 0:40 So there's username and password. 0:43 And we're not using them, but if we don't put them there, 0:46 we have a bit of a problem. 0:48 It's a different method signature, and 0:52 we're gonna end up calling the wrong thing. 0:54 So that is now set up correctly. 0:56 Okay, so we're ready to get the server running. 0:59 So let's choose Run, and we'll choose Run, and 1:00 this will create a new configuration for us called API, so we'll click that. 1:04 There we go. It says Spark has ignited. 1:08 All right, now, I'm gonna go and open up my Postman, 1:10 which you probably have installed. 1:14 We might be running different versions, so don't let that freak you out. 1:15 It's an awesome tool. 1:17 They're always adding new stuff. 1:18 So the first thing that I want you to know here about Postman 1:20 is that you can do the different types of requests. 1:23 So what we wanna do first is we wanna post so that we can add a course. 1:26 So we're gonna do a post, and we're gonna post to 1:29 localhost4567, and we're gonna post to courses. 1:32 I'm going to put an HTTP at the front of that. 1:39 So we're gonna post to the URI of courses, and this is our server, right? 1:43 It starts on 4567 as the default port. 1:48 So, then why don't we add a header, 1:51 a specific header that says content type, right? 1:53 Because remember, it's only listening to that and I accidentally sent the post. 1:57 So, content type and the value here is application/json. 2:04 Okay. 2:10 In the body, we also wanna pass the json, right? 2:12 Remember, that's what we have promised, we had said we're going to send 2:15 application json, so we're gonna right some json here. 2:19 So, we'll do the name that we wanna send. 2:21 So json is a key value and key colon, then the value that you want. 2:25 So we'll say REST API Basics and then the URL, 2:31 and then again, so if the URL's the key and the value is 2:37 http:teamtreehouse.com/Library/rest-api-b- asics, cool. 2:43 All right, so that's the body that we're gonna send up. 2:52 So let's go ahead. 2:54 So we're gonna post to courses, saying that we are application json and 2:54 that's what the body looks like. 2:59 So let's click Send. 3:00 And we can scroll to the response. 3:02 And there it is. 3:04 There is REST API Basics. 3:05 You probably have id 1. 3:07 I had just tested this before to make sure that it works. 3:08 So it has the id back. 3:11 So that's awesome. 3:12 And also notice here that is says 201 Created. 3:13 That's because we sent that status code back, cuz we're good API citizens. 3:16 Isn't that awesome? 3:19 And so now, what happens is it stores that over here. 3:20 So these are the ones that I did accidentally when I pressed Enter and 3:26 here is the good working one that we passed. 3:29 So we can make a new request. 3:31 So let's make a different one, so let's do name, 3:33 let make this will be Java basics, remember that one? 3:36 And we'll change this from rest api to be java. 3:40 And we'll click Send. 3:46 Okay, we'll scroll to the response, and boom, there's a new one. 3:49 It's got id number 3, awesome. 3:51 So, post works, and now there's two, so let's switch our request to be a GET, 3:53 right? 3:58 So now we can list all of the courses that are available. 3:58 So let's go ahead and send that GET. 4:02 And that REST API Basics, that was the one that I tested with. 4:06 Here's the two that we added, and on yours there should just be two, right? 4:08 And see how there's these hard brackets here. 4:12 See how it's showing that there is an array of these different courses. 4:13 Awesome! 4:18 And we also added a row that lets you see different IDs. 4:19 So if I said 2, it should just return the 2. 4:23 Awesome, it does. 4:25 And if I say 3, does it get the third one? 4:26 Awesome. 4:29 And what happens if we do a different idea, like what if we do 42? 4:30 Null. 4:34 Hm? 4:35 That's not great, is it? 4:35 Because it says 200 OK but it's returning a null. 4:38 It really should return a 404 not found, right? 4:41 Let's table that for now. 4:44 So, we've done our automated testing, but this is manual testing, right? 4:45 So we've done automated testing together before where we test 4:50 isolated code in small units of work. 4:53 That's unit testing. 4:55 We can take another approach, which is called functional testing. 4:56 What this does is it allows you to test the system more in a way than an end user 4:59 using your system might do things. 5:03 So let's dive into functional testing, right after this quick break. 5:05