diff options
Diffstat (limited to 'usth/ICT2.7/P4L3 White-Box Testing Subtitles/2 - Overview - lang_en_vs4.srt')
-rw-r--r-- | usth/ICT2.7/P4L3 White-Box Testing Subtitles/2 - Overview - lang_en_vs4.srt | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/usth/ICT2.7/P4L3 White-Box Testing Subtitles/2 - Overview - lang_en_vs4.srt b/usth/ICT2.7/P4L3 White-Box Testing Subtitles/2 - Overview - lang_en_vs4.srt new file mode 100644 index 0000000..c032d40 --- /dev/null +++ b/usth/ICT2.7/P4L3 White-Box Testing Subtitles/2 - Overview - lang_en_vs4.srt @@ -0,0 +1,167 @@ +1 +00:00:00,420 --> 00:00:03,860 +In the last lesson, we talked about black-box testing or functional testing, + +2 +00:00:03,860 --> 00:00:06,110 +which is the kind of testing that you perform when you just + +3 +00:00:06,110 --> 00:00:09,860 +look at the description of the software. Today we're going to cover white-box + +4 +00:00:09,860 --> 00:00:12,490 +testing, which is the kind of testing that we perform when we + +5 +00:00:12,490 --> 00:00:15,800 +open up the box. We look inside the program, and we actually + +6 +00:00:15,800 --> 00:00:19,490 +test it based on its code. And there is one basic assumption + +7 +00:00:19,490 --> 00:00:22,320 +behind the idea of white-box testing, which is a very intuitive one, + +8 +00:00:22,320 --> 00:00:26,080 +and the assumption is that executing the faulty statement is a necessary + +9 +00:00:26,080 --> 00:00:29,380 +condition for revealing a fault. In other words, if there is + +10 +00:00:29,380 --> 00:00:31,690 +a bug in the program there is no way were going to be + +11 +00:00:31,690 --> 00:00:34,490 +able to find this bug or this fault, if we don't execute + +12 +00:00:34,490 --> 00:00:37,110 +the statement that contains it. Which makes a lot of sense. As + +13 +00:00:37,110 --> 00:00:40,240 +we did for black-box testing, we're going to start by summarizing what + +14 +00:00:40,240 --> 00:00:43,650 +are the main advantages of white-box testing. The main advantage is that + +15 +00:00:43,650 --> 00:00:48,050 +it's based on the code, and as such, the quality of white-box + +16 +00:00:48,050 --> 00:00:51,760 +testing can be measured objectively. And what I mean here by objectively + +17 +00:00:51,760 --> 00:00:54,390 +is that if you think about black-box testing In many + +18 +00:00:54,390 --> 00:00:57,630 +cases, there were subjective decisions, there were had to be made + +19 +00:00:57,630 --> 00:01:00,830 +in order to define tests in a black-box fashion. In the + +20 +00:01:00,830 --> 00:01:03,990 +case of white-box testing, because everything is based on the quota, + +21 +00:01:03,990 --> 00:01:07,965 +we don't have to make such subjective decisions. And similarly, because + +22 +00:01:07,965 --> 00:01:10,680 +white-box testing is based on the code, it can be measured + +23 +00:01:10,680 --> 00:01:14,250 +automatically. So we can build tools and actually there are tools, + +24 +00:01:14,250 --> 00:01:16,860 +and there's plenty of tools, that can be measured, the level + +25 +00:01:16,860 --> 00:01:19,670 +of white-box testing can be achieved in a fully automated way. + +26 +00:01:19,670 --> 00:01:21,620 +And we're going to see some of them in the course of the + +27 +00:01:21,620 --> 00:01:24,600 +class. Another advantage of white-box testing is that it can be + +28 +00:01:24,600 --> 00:01:27,700 +used to compare test suites. So if you have two alternative sets + +29 +00:01:27,700 --> 00:01:30,270 +of tests that you can use to assess the quality of + +30 +00:01:30,270 --> 00:01:34,360 +your software, white-box testing techniques can tell you which one of these + +31 +00:01:34,360 --> 00:01:37,580 +two test suites is likely to be more effective in testing + +32 +00:01:37,580 --> 00:01:42,350 +your code. And finally, white-box testing allows for covering the coded behavior + +33 +00:01:42,350 --> 00:01:44,470 +of the software. What that means is that if there is + +34 +00:01:44,470 --> 00:01:47,680 +some mistake in the code and is not obvious by looking at + +35 +00:01:47,680 --> 00:01:50,300 +the specification of the code, white box testing might be able + +36 +00:01:50,300 --> 00:01:53,330 +to catch it, because it tries to exercise the code. There's many + +37 +00:01:53,330 --> 00:01:56,430 +different kinds of white box testing, there are control flow based + +38 +00:01:56,430 --> 00:02:00,550 +techniques, data flow based techniques, and fault based techniques. And for each + +39 +00:02:00,550 --> 00:02:04,030 +one of these family of techniques there are many variations. So + +40 +00:02:04,030 --> 00:02:07,450 +this field is very, very broad. In this lesson we will talk + +41 +00:02:07,450 --> 00:02:09,110 +about white-box testing by focusing + +42 +00:02:09,110 --> 00:02:11,910 +mainly on control-flow based testing techniques. |