From b2d80610db6beda38573890ed169815e495bc663 Mon Sep 17 00:00:00 2001
From: Nguyễn Gia Phong <mcsinyx@disroot.org>
Date: Sun, 24 May 2020 16:34:31 +0700
Subject: [usth/ICT2.7] Engineer software

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+1
+00:00:00,360 --> 00:00:03,320
+As you probably realized by now, at job development, it's a
+
+2
+00:00:03,320 --> 00:00:06,280
+lot about testing. So there is a lot of emphasis on
+
+3
+00:00:06,280 --> 00:00:09,420
+testing. Testing first, te, testing early. So that's the reason why
+
+4
+00:00:09,420 --> 00:00:12,710
+I also want to discuss what is the testing strategy in XP.
+
+5
+00:00:12,710 --> 00:00:14,820
+So first of all what is the basic principle? The basic
+
+6
+00:00:14,820 --> 00:00:18,770
+principle is that testing is Coded confidence. You write your test
+
+7
+00:00:18,770 --> 00:00:22,150
+cases and then you can run them anytime you want. And
+
+8
+00:00:22,150 --> 00:00:25,540
+if they pass, they'll give you confidence that your code is behaving
+
+9
+00:00:25,540 --> 00:00:27,920
+the way it's expected. If they don't pass on the other
+
+10
+00:00:27,920 --> 00:00:30,870
+hand, you'll know that there's something to fix. Another important concept is
+
+11
+00:00:30,870 --> 00:00:34,600
+that test might be isolated and automated. So both the running and
+
+12
+00:00:34,600 --> 00:00:37,400
+the checking of the tests has to be automated for all of
+
+13
+00:00:37,400 --> 00:00:39,830
+this to work. And there are two types of tests. The first
+
+14
+00:00:39,830 --> 00:00:43,170
+type of test is unit tests, that are created by the programmers,
+
+15
+00:00:43,170 --> 00:00:45,830
+and they're created by looking at the task cards. The task cards
+
+16
+00:00:45,830 --> 00:00:48,410
+describe what they implemented, functionality should
+
+17
+00:00:48,410 --> 00:00:50,740
+do, and therefore allows the developers.
+
+18
+00:00:50,740 --> 00:00:53,970
+The right test that can test this functionality. That can
+
+19
+00:00:53,970 --> 00:00:57,000
+check that the code's correctly implemented functionality. And as we
+
+20
+00:00:57,000 --> 00:01:00,670
+said, you should really test every meaninful feature. So, for
+
+21
+00:01:00,670 --> 00:01:04,250
+example, you should test every meaningful method in your classes.
+
+22
+00:01:04,250 --> 00:01:08,490
+You should put specific attention to possibly complex implementations, special
+
+23
+00:01:08,490 --> 00:01:11,100
+cases or specific problems that you might think of. while
+
+24
+00:01:11,100 --> 00:01:13,110
+reading the task cards. In some cases, when you do
+
+25
+00:01:13,110 --> 00:01:15,800
+refactoring, you might also want to write test cases specific
+
+26
+00:01:15,800 --> 00:01:18,300
+to that refactoring. But we'll say more about that. So this
+
+27
+00:01:18,300 --> 00:01:20,610
+was for the first kind of tests that are involved in
+
+28
+00:01:20,610 --> 00:01:23,650
+the, in the XP process. The second kind of tests are
+
+29
+00:01:23,650 --> 00:01:27,710
+the system tests, also called acceptance tests. And those tests involve
+
+30
+00:01:27,710 --> 00:01:30,920
+the customer. So basically what happens is that the customer provides
+
+31
+00:01:30,920 --> 00:01:33,760
+the test cases for their stores and then the development team
+
+32
+00:01:33,760 --> 00:01:37,630
+transforms those into actual automated tests. So these are tests created
+
+33
+00:01:37,630 --> 00:01:40,700
+by the developers. They run very quickly and they run very frequently.
+
+34
+00:01:40,700 --> 00:01:43,120
+These are tests developed with the help, with the
+
+35
+00:01:43,120 --> 00:01:46,170
+involvement of the customer they run longer. And run less
+
+36
+00:01:46,170 --> 00:01:48,710
+frequently, they run every time the system is integrated.
+
+37
+00:01:48,710 --> 00:01:50,890
+According to the cycle we saw a few minutes ago.
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