From 8a7dfa0972c83fd811a4296e7373574bea4a28d0 Mon Sep 17 00:00:00 2001 From: Nguyễn Gia Phong Date: Sun, 19 Jul 2020 20:34:40 +0700 Subject: [usth/ICT2.7] Remove Udacity transcribes --- ...Branch and Condition Coverage - lang_en_vs4.srt | 143 --------------------- 1 file changed, 143 deletions(-) delete mode 100644 usth/ICT2.7/P4L3 White-Box Testing Subtitles/16 - Branch and Condition Coverage - lang_en_vs4.srt (limited to 'usth/ICT2.7/P4L3 White-Box Testing Subtitles/16 - Branch and Condition Coverage - lang_en_vs4.srt') diff --git a/usth/ICT2.7/P4L3 White-Box Testing Subtitles/16 - Branch and Condition Coverage - lang_en_vs4.srt b/usth/ICT2.7/P4L3 White-Box Testing Subtitles/16 - Branch and Condition Coverage - lang_en_vs4.srt deleted file mode 100644 index 143a534..0000000 --- a/usth/ICT2.7/P4L3 White-Box Testing Subtitles/16 - Branch and Condition Coverage - lang_en_vs4.srt +++ /dev/null @@ -1,143 +0,0 @@ -1 -00:00:00,052 --> 00:00:03,407 -Let's go back to our test criteria subsumption representation, where - -2 -00:00:03,407 --> 00:00:06,770 -we already had branch coverage and statement coverage. In this case, - -3 -00:00:06,770 --> 00:00:09,350 -if we want to add condition coverage to this page, we - -4 -00:00:09,350 --> 00:00:12,050 -have to put it here on this side, with no relationship - -5 -00:00:12,050 --> 00:00:15,830 -of subsumption with either branch coverage or statement coverage, which - -6 -00:00:15,830 --> 00:00:19,270 -means that the criteria are not comparable. So now let's consider - -7 -00:00:19,270 --> 00:00:22,108 -again our last example, and let's use a different test - -8 -00:00:22,108 --> 00:00:25,060 -with this time. We still have two tests, but the first - -9 -00:00:25,060 --> 00:00:27,575 -one has x is equal to 0 and y is equal to minus - -10 -00:00:27,575 --> 00:00:30,370 -5. And the second one, x is equal to 5 and y is - -11 -00:00:30,370 --> 00:00:33,350 -equal to 5 as well. Let's see what happens in terms of condition - -12 -00:00:33,350 --> 00:00:36,740 -coverage, when we run these tests. If we look at the first condition, x - -13 -00:00:36,740 --> 00:00:39,820 -is equal to 0. It is both true, for the first test case, - -14 -00:00:39,820 --> 00:00:43,240 -and false for the second one. As for the second condition, y greater - -15 -00:00:43,240 --> 00:00:45,800 -than 0, it is false for the first test case and true for - -16 -00:00:45,800 --> 00:00:47,770 -the second one. Therefore we've achieved a - -17 -00:00:47,770 --> 00:00:50,400 -100% condition coverage with these two tests. - -18 -00:00:50,400 --> 00:00:54,020 -But what about branch coverage? If we consider the whole predicate, - -19 -00:00:54,020 --> 00:00:56,620 -instead of just the individual conditions, let's see what happens for the - -20 -00:00:56,620 --> 00:00:59,090 -two test cases. If we look at the first one, because - -21 -00:00:59,090 --> 00:01:02,200 -x is equal to 0, the overall predicate is true. As for - -22 -00:01:02,200 --> 00:01:05,750 -the second one, because the second condition is true, the overall - -23 -00:01:05,750 --> 00:01:09,110 -predicate is true. In other words, despite the fact that we're exercising - -24 -00:01:09,110 --> 00:01:12,520 -all the possible values for the two conditions, the overall predicate is - -25 -00:01:12,520 --> 00:01:16,540 -always true. And therefore, we're covering only one of the two branches. - -26 -00:01:16,540 --> 00:01:19,591 -So our coverage will be 50%. This is the reason - -27 -00:01:19,591 --> 00:01:22,231 -why normally the two criteria that we just saw, decision - -28 -00:01:22,231 --> 00:01:26,205 -coverage, and condition coverage are considered together. And the resulting - -29 -00:01:26,205 --> 00:01:30,320 -criterion is called branch and condition coverage, or also decision - -30 -00:01:30,320 --> 00:01:33,030 -and condition coverage. At this point the test requirements and - -31 -00:01:33,030 --> 00:01:35,590 -the coverage measure should be pretty straight forward, because they're - -32 -00:01:35,590 --> 00:01:38,120 -just considering the two criteria together. As far as the - -33 -00:01:38,120 --> 00:01:39,960 -requirements are concerned, they include - -34 -00:01:39,960 --> 00:01:41,880 -all the branches and individual conditions - -35 -00:01:41,880 --> 00:01:44,580 -in the program. Where as the coverage measure is computed - -36 -00:01:44,580 --> 00:01:49,180 -considering both coverage measures, both branch coverage and condition coverage. -- cgit 1.4.1