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Diffstat (limited to 'usth/ICT2.7/P4L2 Black-Box Testing Subtitles/10 - Test Data Selection Quiz Solution - lang_en_vs4.srt')
| -rw-r--r-- | usth/ICT2.7/P4L2 Black-Box Testing Subtitles/10 - Test Data Selection Quiz Solution - lang_en_vs4.srt | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/usth/ICT2.7/P4L2 Black-Box Testing Subtitles/10 - Test Data Selection Quiz Solution - lang_en_vs4.srt b/usth/ICT2.7/P4L2 Black-Box Testing Subtitles/10 - Test Data Selection Quiz Solution - lang_en_vs4.srt deleted file mode 100644 index 418ed91..0000000 --- a/usth/ICT2.7/P4L2 Black-Box Testing Subtitles/10 - Test Data Selection Quiz Solution - lang_en_vs4.srt +++ /dev/null @@ -1,79 +0,0 @@ -1 -00:00:00,025 --> 00:00:02,900 -Okay, so now we're going to answer the question. So if we want - -2 -00:00:02,900 --> 00:00:06,520 -to consider all these inputs, and run them all on the software, - -3 -00:00:06,520 --> 00:00:09,490 -let's see how it will work. Let's assume that these are, 32 - -4 -00:00:09,490 --> 00:00:12,280 -bit integers. So at this point what we will have is, a - -5 -00:00:12,280 --> 00:00:15,130 -number of combination, which is 2 to the 32, times 2 to - -6 -00:00:15,130 --> 00:00:18,390 -the 32. They're two integers. This is equal to 2 to the - -7 -00:00:18,390 --> 00:00:21,910 -64, which in turn, is more or less equal, to 10 to - -8 -00:00:21,910 --> 00:00:25,110 -the 19. So 10 to the 19 is the number of tests that - -9 -00:00:25,110 --> 00:00:27,960 -we need to run to cover the whole domain. Now let's assume - -10 -00:00:27,960 --> 00:00:31,400 -that we can run one test per nanosecond. So what that means - -11 -00:00:31,400 --> 00:00:34,290 -is that we can run 10 to the 9 tests per second, - -12 -00:00:34,290 --> 00:00:37,240 -and that's a lot. If we do the math, that results in 10 - -13 -00:00:37,240 --> 00:00:40,750 -to the 10 seconds over all, because we have 10 to the - -14 -00:00:40,750 --> 00:00:43,760 -19 tests, we could run 10 to the 9 tests per second - -15 -00:00:43,760 --> 00:00:46,630 -so, we do the math, and we can run all these tests - -16 -00:00:46,630 --> 00:00:50,340 -in 10 to the 10 seconds. And what that corresponds to, it's about - -17 -00:00:50,340 --> 00:00:54,470 -600 years, so a lot of time. So even for such - -18 -00:00:54,470 --> 00:00:57,710 -a simple problem, a problem that takes two integers and adds them, - -19 -00:00:57,710 --> 00:01:00,990 -it will take more than 500 years to test it exhaustively. So - -20 -00:01:00,990 --> 00:01:04,690 -the bottom line here is that we just can't do exhaustive testing. |