1 00:00:01,270 --> 00:00:06,790 So it's time to go and update our tests, and I have been somewhat negligent in doing so, largely because 2 00:00:06,790 --> 00:00:08,930 I wanted to get the database stuff out of the way first. 3 00:00:09,940 --> 00:00:14,460 So if you've tried to run your tests lately, you may have noticed that there are some problems. 4 00:00:14,470 --> 00:00:15,130 Let's do that. 5 00:00:15,820 --> 00:00:23,080 So I'm in my working directory at the root level of my project, and if I just type go test dash Vygotsky 6 00:00:23,320 --> 00:00:26,200 to test everything, you'll see there are some errors. 7 00:00:26,680 --> 00:00:31,610 So right away we have this error in render test, go undefined render template. 8 00:00:31,630 --> 00:00:32,480 Well, that's an easy one. 9 00:00:32,500 --> 00:00:34,180 Let's go to render test Dongo. 10 00:00:35,590 --> 00:00:42,760 Render test Ortego and there are errors everywhere I called this function. 11 00:00:42,770 --> 00:00:44,830 So let's find it render template. 12 00:00:44,830 --> 00:00:49,710 And if you recall, we renamed that from render template to template. 13 00:00:50,260 --> 00:00:54,120 So that'll fix that one and that'll fix that one. 14 00:00:54,730 --> 00:00:58,410 And at the bottom, we have one more new templates. 15 00:00:58,420 --> 00:01:00,190 Well, we didn't call it new templates anymore. 16 00:01:00,190 --> 00:01:01,380 What did we actually call it? 17 00:01:01,420 --> 00:01:03,060 We renamed it to New Renderer. 18 00:01:03,730 --> 00:01:06,400 So let's copy that function name and replace that. 19 00:01:07,300 --> 00:01:08,730 And that will fix those problems. 20 00:01:08,730 --> 00:01:11,080 So also try your tests again and see what else is going on. 21 00:01:11,410 --> 00:01:14,760 Go test drive, dot, dot, dot, dot, dot. 22 00:01:16,120 --> 00:01:17,920 And now we have another problem. 23 00:01:17,920 --> 00:01:19,750 And the problem is where is it? 24 00:01:20,680 --> 00:01:21,310 Right here. 25 00:01:23,110 --> 00:01:23,900 Set up test. 26 00:01:23,900 --> 00:01:24,520 Don't go. 27 00:01:24,520 --> 00:01:26,830 Not enough arguments and call to new repo. 28 00:01:32,440 --> 00:01:37,330 So the problem with that one is that we now have new handlers requiring a database driver. 29 00:01:37,540 --> 00:01:40,330 OK, well, how are we going to get around that? 30 00:01:40,990 --> 00:01:46,990 Because if you think it through, what we're essentially asking ourselves to do is to every time we 31 00:01:46,990 --> 00:01:50,380 run our tests, we want to have access to the actual database. 32 00:01:51,130 --> 00:01:53,110 And what we're writing are called unit tests. 33 00:01:53,110 --> 00:01:56,630 And unit tests are supposed to test one thing in isolation. 34 00:01:56,650 --> 00:02:03,190 So when I test, for example, this handler, the home handler, all I want to test is what's inside 35 00:02:03,190 --> 00:02:03,510 of this. 36 00:02:03,520 --> 00:02:05,140 I don't care about anything else. 37 00:02:06,040 --> 00:02:13,600 So in essence, what we need to do is to find a way to run our tests without creating a new database, 38 00:02:14,010 --> 00:02:19,150 running all the migrations to populate the database with tables, then populating the tables with some 39 00:02:19,150 --> 00:02:21,710 test data and then running our tests. 40 00:02:21,750 --> 00:02:26,350 Now, there are situations where you want to do that and we'll be doing something very similar to that 41 00:02:26,350 --> 00:02:27,730 before we finish this course. 42 00:02:28,090 --> 00:02:29,860 But right now, I'm writing unit tests. 43 00:02:30,610 --> 00:02:36,430 So what I'm going to do is take advantage of the fact that this is calling a repository. 44 00:02:36,460 --> 00:02:43,330 And if you look in our repository folder for our application, we have this repository itself that describes 45 00:02:43,360 --> 00:02:47,290 all the functions that must be available to a given repository. 46 00:02:47,740 --> 00:02:53,920 But we also have the ability to swap out our database with another database or as is the case right 47 00:02:53,920 --> 00:03:01,570 now, we're going to swap out the repoll the database repo and put in place for our tests only a repository 48 00:03:01,570 --> 00:03:05,020 that thinks a database and it's really not that difficult. 49 00:03:05,590 --> 00:03:07,030 So let's think about how this works. 50 00:03:07,040 --> 00:03:12,450 Let's go back to may not go and see exactly how we're doing this. 51 00:03:12,460 --> 00:03:15,870 So in our run function and our main function, it's up here. 52 00:03:15,880 --> 00:03:21,280 So now in our run function, we register some things for the session. 53 00:03:21,280 --> 00:03:25,450 We set up some values for values, for our application config. 54 00:03:25,870 --> 00:03:27,700 And then down here we connect to a database. 55 00:03:27,760 --> 00:03:29,740 OK, so it says connect to SQL. 56 00:03:29,740 --> 00:03:30,310 That's fine. 57 00:03:30,310 --> 00:03:31,150 Let's skip that. 58 00:03:31,390 --> 00:03:33,190 Create template cache here. 59 00:03:33,220 --> 00:03:35,020 New repo for the handlers. 60 00:03:35,320 --> 00:03:41,140 So the handlers function has a new repository function where we're going to create a new function in 61 00:03:41,140 --> 00:03:43,810 here for new test repo or something like that. 62 00:03:44,530 --> 00:03:48,850 And that actually calls DB repo new postgrads repo. 63 00:03:49,150 --> 00:03:52,800 And we're going to create another function here that returns a test repository. 64 00:03:52,810 --> 00:03:53,880 So let's get started doing that. 65 00:03:53,890 --> 00:03:57,240 Let's just get it set up and then we'll get around to actually making the whole thing work. 66 00:03:57,820 --> 00:04:04,780 I'll create another type, which I will call test DB repo, which will be a struct and it will have 67 00:04:04,780 --> 00:04:13,060 the same Fields app slash pointer to configure app config, the same fields as Postgres DB Repo. 68 00:04:13,220 --> 00:04:18,460 It also has to have DB, which we're not going to populate with anything, but it needs to exist so 69 00:04:18,460 --> 00:04:21,760 we can call database functions that don't actually have a database behind them. 70 00:04:23,110 --> 00:04:25,950 Then we'll have to have a function just like this one. 71 00:04:25,960 --> 00:04:26,950 So I'll copy this one. 72 00:04:27,760 --> 00:04:32,050 I'll post it here and I will call it new test repo, 73 00:04:35,260 --> 00:04:36,850 new test testing repo. 74 00:04:36,850 --> 00:04:38,260 Let's call it new testing repo. 75 00:04:38,950 --> 00:04:42,130 And it's only going to take one argument, just the app config. 76 00:04:42,440 --> 00:04:47,950 OK, even though postgrads repo or this needs to become test DB repo, 77 00:04:51,070 --> 00:04:55,220 we're never going to populate the database for we're just going to populate the application config. 78 00:04:55,720 --> 00:04:58,950 So now this gives us an error and the error is one that you should already know about. 79 00:04:58,960 --> 00:05:05,590 It says this type sorry database repo type does not implement a repository database repo as some methods 80 00:05:05,590 --> 00:05:06,190 are missing. 81 00:05:06,580 --> 00:05:10,870 And what it's talking about are all the methods inherent in postgrads repo. 82 00:05:10,870 --> 00:05:13,450 We must have one entry for every one of these things. 83 00:05:13,450 --> 00:05:19,510 So I want them to do is copy this and under the DB repo I will create a new file. 84 00:05:21,610 --> 00:05:29,980 Which I will call test Repo Digo, and I will add that to get and I will paste everything in there and 85 00:05:29,980 --> 00:05:31,380 then I'll go start changing things. 86 00:05:31,390 --> 00:05:36,100 So to start with, um, let's see, I don't need this. 87 00:05:36,400 --> 00:05:37,650 I need to get rid of this. 88 00:05:38,200 --> 00:05:40,870 I didn't delete before I pasted there. 89 00:05:41,560 --> 00:05:48,460 So I'm going to change this type or this receiver from postgrads DB repo to test DB repo and I'll do 90 00:05:48,460 --> 00:05:49,600 that for all of the functions. 91 00:05:50,680 --> 00:05:51,310 Paste. 92 00:05:53,580 --> 00:05:54,240 Paiste. 93 00:05:55,970 --> 00:05:56,600 Paiste. 94 00:05:58,950 --> 00:06:05,070 Paced, and I think there's one more paced now that gets rid of the errors. 95 00:06:05,100 --> 00:06:09,510 If we go back to DB, Repo now implements all of those methods, but we're not actually passing it a 96 00:06:09,520 --> 00:06:10,890 database connection pool. 97 00:06:11,610 --> 00:06:13,440 So let's go change these functions. 98 00:06:13,440 --> 00:06:17,040 The first one is fine because it doesn't actually hit the database at all and we're not doing it. 99 00:06:17,050 --> 00:06:22,620 That's going to be changed later, later on when we get to building the back end for our property owners. 100 00:06:23,070 --> 00:06:28,140 But this function, for example, insert reservation, I want this function to exist. 101 00:06:28,230 --> 00:06:31,170 I want to want it to have the receiver tested repo. 102 00:06:31,680 --> 00:06:35,720 And I wanted to return an intent, an error, but I never wanted to hit the database. 103 00:06:35,730 --> 00:06:43,110 So all I have to do is have it return an end and no error, which is sufficient for right now. 104 00:06:43,440 --> 00:06:44,800 And we'll do the same thing here. 105 00:06:44,910 --> 00:06:52,350 This just returns an error, so I'll just have it return nil and this returns a bool and an error. 106 00:06:52,560 --> 00:07:00,120 So we return false and nil and this returns a slice of model's room. 107 00:07:00,120 --> 00:07:03,840 So I'll leave my declaration of model's room there for my room's variable. 108 00:07:04,500 --> 00:07:10,320 But just have it return that empty variable and no error and we'll change this when we get to writing 109 00:07:10,320 --> 00:07:11,640 tests that actually do something. 110 00:07:12,070 --> 00:07:14,130 But right now, I just want this to be able to run. 111 00:07:15,420 --> 00:07:17,830 So this one returns a slice. 112 00:07:18,220 --> 00:07:19,890 Now this one turns a model's room. 113 00:07:19,890 --> 00:07:21,750 So I'll leave the declaration of that variable 114 00:07:25,830 --> 00:07:28,390 and just have it returned the empty variable and to nil. 115 00:07:29,180 --> 00:07:30,650 OK, this gets us closer. 116 00:07:31,590 --> 00:07:33,810 So let's make sure there's no errors here. 117 00:07:33,840 --> 00:07:36,000 No, no errors in DB repo. 118 00:07:36,000 --> 00:07:36,480 No. 119 00:07:37,200 --> 00:07:39,360 No errors in the render test. 120 00:07:39,870 --> 00:07:40,290 No. 121 00:07:40,310 --> 00:07:45,180 OK, so let's have a look and see what happens if I try to run the test, because we're not done yet. 122 00:07:45,390 --> 00:07:46,690 But I just want to see how close we are. 123 00:07:47,040 --> 00:07:50,520 Go test Dog-Eat-Dog. 124 00:07:53,060 --> 00:07:59,240 And it says internals, handlers set up Tesco, not enough arguments in call to new repo. 125 00:07:59,290 --> 00:08:02,360 OK, so that's in set up test under handlers. 126 00:08:02,380 --> 00:08:02,880 Let's go there. 127 00:08:03,860 --> 00:08:10,100 So handlers set up test and the error is right here. 128 00:08:12,890 --> 00:08:21,470 So here this is calling the new repo and app, I'm going to instead create a copy of this function in 129 00:08:21,470 --> 00:08:25,100 handler Stocco, which exists only to run test. 130 00:08:25,110 --> 00:08:30,170 So I call it new testing or new test repo, new test repo. 131 00:08:30,740 --> 00:08:35,210 And that's only going to take one argument, which is the app config. 132 00:08:38,470 --> 00:08:46,770 And it's going to return a database of type new testing repo, which only requires the app config. 133 00:08:46,810 --> 00:08:50,340 So now we've taken the database right out of the equation. 134 00:08:51,130 --> 00:08:56,650 So let's copy this function name, go back to setup test and have it call that instead of new repo. 135 00:08:57,490 --> 00:08:57,820 All right. 136 00:08:57,820 --> 00:08:58,830 Let's see what happens now. 137 00:08:58,840 --> 00:08:59,800 They're still going to be errors. 138 00:09:00,070 --> 00:09:00,870 But don't despair. 139 00:09:00,880 --> 00:09:01,900 We'll take care of those. 140 00:09:02,740 --> 00:09:06,180 Go test dash v dot, dot, dot, dot, dot. 141 00:09:09,320 --> 00:09:11,870 OK, so there are some errors which are expected. 142 00:09:12,590 --> 00:09:13,670 Let's see what they are. 143 00:09:15,110 --> 00:09:20,300 I'm going to clear the screen and run that again with some empty lines in front of it so I can see where 144 00:09:20,300 --> 00:09:21,080 to start looking. 145 00:09:24,260 --> 00:09:32,280 Right here, so fine, fine, fine, that's good. 146 00:09:32,300 --> 00:09:39,170 And here we have our first fail in bookings, internal helpers, but it's bookings, internal handlers 147 00:09:39,410 --> 00:09:42,680 and it says there's a problem and we're testing the reservation. 148 00:09:42,870 --> 00:09:46,130 OK, so if you look at these, you'll notice some commonality. 149 00:09:46,130 --> 00:09:48,230 And the commonality is pretty easy to identify. 150 00:09:48,500 --> 00:09:53,450 All of the errors have to do with either the session because apparently we don't have access to the 151 00:09:53,450 --> 00:09:56,570 session or whenever we're making a post request. 152 00:09:56,670 --> 00:09:59,300 And those are problems and they're easy to fix. 153 00:09:59,300 --> 00:10:02,630 And we'll take care of fixing those in the next few lectures.