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
+00:00:00,160 --> 00:00:04,260
+White box testing, in general, and coverage criteria in particular, involve some
+
+2
+00:00:04,260 --> 00:00:07,550
+subtle concepts, so before I conclude this lesson, I want to have a
+
+3
+00:00:07,550 --> 00:00:10,960
+few more quizzes to make sure that we all understand these concepts.
+
+4
+00:00:10,960 --> 00:00:13,610
+The first one involves a very simple piece of code, a straight line
+
+5
+00:00:13,610 --> 00:00:16,540
+of code, three statements, in which we simply read an integer and
+
+6
+00:00:16,540 --> 00:00:20,180
+then prints 10 divided by the value of that integer minus 3. Now,
+
+7
+00:00:20,180 --> 00:00:22,250
+let's imagine that we have a test where there consists of three
+
+8
+00:00:22,250 --> 00:00:25,250
+test cases for this code, and what I'm showing in the test cases
+
+9
+00:00:25,250 --> 00:00:28,580
+is the input and the expected output. So for the first one,
+
+10
+00:00:28,580 --> 00:00:31,280
+the input is 1, and I expect the output to be minus 5.
+
+11
+00:00:31,280 --> 00:00:34,480
+For the second one, the input is minus 1, I'm expecting to
+
+12
+00:00:34,480 --> 00:00:37,120
+have 2.5. And for the third one, the input is 0, and I'm
+
+13
+00:00:37,120 --> 00:00:42,440
+expecting to have minus 3.3333 as the result. Now the first question
+
+14
+00:00:42,440 --> 00:00:45,180
+I want to ask, is if we considered this test suite, and we
+
+15
+00:00:45,180 --> 00:00:48,050
+run it on the code, does it achieve path coverage? And remember
+
+16
+00:00:48,050 --> 00:00:50,960
+that path coverage is one of the strongest coverage criteria that we saw.
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