1 00:00:01,250 --> 00:00:02,880 ‫Now before we can move on to 2 00:00:02,880 --> 00:00:04,940 ‫writing some actual express code, 3 00:00:04,940 --> 00:00:06,690 ‫we first need to install yet 4 00:00:06,690 --> 00:00:07,690 ‫another tool, 5 00:00:07,690 --> 00:00:08,730 ‫and this time it's an 6 00:00:08,730 --> 00:00:10,680 ‫app called Postman. 7 00:00:10,680 --> 00:00:12,820 ‫And Postman is a beautiful tool 8 00:00:12,820 --> 00:00:15,460 ‫that allows us to do API testing. 9 00:00:15,460 --> 00:00:17,380 ‫It's a little bit like a browser 10 00:00:17,380 --> 00:00:19,640 ‫but it doesn't render any html 11 00:00:19,640 --> 00:00:21,800 ‫or any visible websites to us. 12 00:00:21,800 --> 00:00:23,870 ‫Instead we can do all kinds of requests 13 00:00:23,870 --> 00:00:25,770 ‫and then receive the response simply 14 00:00:25,770 --> 00:00:28,540 ‫as text then work with that response. 15 00:00:28,540 --> 00:00:31,471 ‫So as they say Postman simplifies API development 16 00:00:31,471 --> 00:00:33,290 ‫and that really is true. 17 00:00:33,290 --> 00:00:34,900 ‫And that kind of is the standard 18 00:00:34,900 --> 00:00:36,630 ‫application that you will see everyone 19 00:00:36,630 --> 00:00:38,750 ‫using basically for testing APIs. 20 00:00:38,750 --> 00:00:41,500 ‫But you can do a lot more than just testing 21 00:00:41,500 --> 00:00:43,900 ‫and we will see many of these features 22 00:00:43,900 --> 00:00:45,690 ‫throughout this course. 23 00:00:45,690 --> 00:00:49,340 ‫For now, just head over to getpostman.com 24 00:00:49,340 --> 00:00:51,550 ‫So, as you can see here in the url 25 00:00:51,550 --> 00:00:54,213 ‫and then here on product, just hit Postman. 26 00:00:56,210 --> 00:00:58,533 ‫Then finally download the app, 27 00:00:58,533 --> 00:01:00,400 ‫and then download. 28 00:01:00,400 --> 00:01:02,150 ‫So, I'm not going to download it right now, 29 00:01:02,150 --> 00:01:04,190 ‫of course I already have it installed. 30 00:01:04,190 --> 00:01:05,880 ‫And so let's now take a look at how 31 00:01:05,880 --> 00:01:07,540 ‫Postman actually works. 32 00:01:07,540 --> 00:01:09,140 ‫So I'm going to open up Postman. 33 00:01:11,640 --> 00:01:13,130 ‫That takes a little time, 34 00:01:13,130 --> 00:01:14,550 ‫and so here we go this is 35 00:01:14,550 --> 00:01:16,280 ‫how Postman looks like. 36 00:01:16,280 --> 00:01:18,330 ‫And probably when you downloaded yours, 37 00:01:18,330 --> 00:01:20,760 ‫it's going to be in a light version, 38 00:01:20,760 --> 00:01:23,040 ‫but if you like the dark mode, like me, 39 00:01:23,040 --> 00:01:25,745 ‫just open up the settings and on themes, 40 00:01:25,745 --> 00:01:28,920 ‫you can just use the dark theme over here. 41 00:01:28,920 --> 00:01:31,690 ‫All right, so as I said, it's a little 42 00:01:31,690 --> 00:01:33,770 ‫bit like a browser where in here we 43 00:01:33,770 --> 00:01:36,890 ‫can enter a url and do the request. 44 00:01:36,890 --> 00:01:38,890 ‫Now, it does allow us to do all kinds 45 00:01:38,890 --> 00:01:41,200 ‫of requests, where in the browser 46 00:01:41,200 --> 00:01:43,440 ‫whatever we put in here in the url bar, 47 00:01:43,440 --> 00:01:45,470 ‫it's always going to be a get request. 48 00:01:45,470 --> 00:01:47,560 ‫But here we can change that, we can use 49 00:01:47,560 --> 00:01:50,280 ‫get or post or put or patch and all 50 00:01:50,280 --> 00:01:51,867 ‫these http methods here. 51 00:01:51,867 --> 00:01:53,510 ‫Where some of them we have already 52 00:01:53,510 --> 00:01:55,280 ‫talked about before, and will keep 53 00:01:55,280 --> 00:01:57,490 ‫talking about in this section. Okay? 54 00:01:57,490 --> 00:01:59,530 ‫Now just to test it very quickly, 55 00:01:59,530 --> 00:02:03,170 ‫Let's use again the dog API that we used before. 56 00:02:03,170 --> 00:02:04,550 ‫So that was at 57 00:02:05,690 --> 00:02:07,150 ‫dog.ceo 58 00:02:09,556 --> 00:02:10,389 ‫then dog API then let's 59 00:02:10,389 --> 00:02:13,380 ‫just simply use this url here 60 00:02:15,740 --> 00:02:18,080 ‫Okay. And so all we have to do is 61 00:02:18,080 --> 00:02:20,730 ‫to put it here, this case we really want 62 00:02:20,730 --> 00:02:22,850 ‫a get request and then send. 63 00:02:22,850 --> 00:02:24,808 ‫And after some time, it should 64 00:02:24,808 --> 00:02:26,640 ‫then show up down here. 65 00:02:26,640 --> 00:02:28,290 ‫And indeed, here we go. 66 00:02:28,290 --> 00:02:30,360 ‫So, that is the Json data just 67 00:02:30,360 --> 00:02:32,430 ‫as we expected it. Okay. 68 00:02:32,430 --> 00:02:34,540 ‫So it looks exactly like what 69 00:02:34,540 --> 00:02:35,373 ‫we have here. 70 00:02:36,290 --> 00:02:37,270 ‫Right? 71 00:02:37,270 --> 00:02:39,040 ‫Now we can then actually save 72 00:02:39,040 --> 00:02:40,940 ‫these requests here, and we 73 00:02:40,940 --> 00:02:42,497 ‫can create collections and folders 74 00:02:42,497 --> 00:02:43,922 ‫to organize our requests. 75 00:02:43,922 --> 00:02:46,110 ‫We can run automatic tests. 76 00:02:46,110 --> 00:02:48,347 ‫We can set up different development 77 00:02:48,347 --> 00:02:50,970 ‫environments or production environments 78 00:02:50,970 --> 00:02:53,080 ‫and all kinds of other useful stuff. 79 00:02:53,080 --> 00:02:55,720 ‫Like sending data in the body for 80 00:02:55,720 --> 00:02:58,460 ‫a post request or a patch request. 81 00:02:58,460 --> 00:03:00,702 ‫Or we can set headers or really, 82 00:03:00,702 --> 00:03:04,726 ‫all you can imagine about building APIs. 83 00:03:04,726 --> 00:03:07,200 ‫So from now on, in the next couple sections, 84 00:03:07,200 --> 00:03:09,259 ‫we're always going to be using 85 00:03:09,259 --> 00:03:11,300 ‫Postman to run or request. 86 00:03:11,300 --> 00:03:12,133 ‫Okay. 87 00:03:12,133 --> 00:03:14,060 ‫So this was just a very quick demo 88 00:03:14,060 --> 00:03:16,310 ‫of Postman so that starting now 89 00:03:16,310 --> 00:03:18,015 ‫we can start building our API 90 00:03:18,015 --> 00:03:20,253 ‫then test it using this tool.