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-1

-00:00:00,340 --> 00:00:03,581

-And the answer is no. So even path coverage's stronger criteria

-

-2

-00:00:03,581 --> 00:00:06,376

-that we saw is not enough to reveal this problem. And why

-

-3

-00:00:06,376 --> 00:00:08,526

-is that? So let me go back to a concept that

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-4

-00:00:08,526 --> 00:00:12,491

-I mentioned in a previous lesson, the cost of exhaustive testing. Exhaustive

-

-5

-00:00:12,491 --> 00:00:15,236

-testing is really the only way in which we can exercise

-

-6

-00:00:15,236 --> 00:00:18,230

-all of the possible behaviors of a program. So we can say

-

-7

-00:00:18,230 --> 00:00:21,884

-even though it might sound like topology, that only exhaustive testing is

-

-8

-00:00:21,884 --> 00:00:25,710

-exhausted. All the coverage criteria that we saw are just process and

-

-9

-00:00:25,710 --> 00:00:30,900

-just approximation of a complete test. So test is a best effort kind

-

-10

-00:00:30,900 --> 00:00:33,180

-of activity. Coverage criteria help you assess

-

-11

-00:00:33,180 --> 00:00:35,430

-how well you tested but once more,

-

-12

-00:00:35,430 --> 00:00:40,060

-test can only reveal issues, can only reveal problems. You can never show the

-

-13

-00:00:40,060 --> 00:00:42,530

-absence of problems. And that's something is

-

-14

-00:00:42,530 --> 00:00:44,377

-important to remember when we do testing.