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Video Title: White Box Testing
Description: White Box Testing
Watch more Videos at https://www.tutorialspoint.com/videotutorials/index.htm
Lecture By: Mr. Arnab Chakraborty, Tutorials Point India Private Limited
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In this video, we are discussing white box
testing.

In the earlier
video, we discussed black box testing,

but tester was
not having the access over the code.

But in case of white box testing,
the tester can also see the code,

can access the code, if required,
they can also change the code.

So, it is conducted to test program and
its implementation in order to improve

code efficiency or the respective
structure of the code.

So, it is also known as structural
testing.

So, that is why here in this particular
testing, we are not only concentrating the

inputs given on the outputs obtained,
whether these outputs are too much precise

according to the user's recommend,
not only that, also here we are trying to

improve the efficiency of the code and the
structure of the code when it is required.

So, it is also known as structural
testing.

So, in this testing method,
the design and the

structure of the code are known to be
to the tester.

So, this particular case, as I told you
earlier, the tester is having the access

and must be knowing the respective design
of the code and the structure of the code.

Programmers of the code conduct this test
on the code.

So, here you see, we are getting the
detailing of this code and this is the

input and outputs are obtained.

Now, let us discuss the different aspects
of this white box testing.

So, it can be categorized in two heads.

One is the control flow testing.

So, the purpose of the control flow
testing is to set up test cases,

which covers all the statements and the
branch conditions.

We know that
in our program, we will be having multiple

different conditions are there,
branch conditions will be there.

So, we should have to do that,
we should have to write the test cases in

such a way that all the statements must
get execution.

Not all the statements cannot get
execution at one time, but in different

time, all the statements should get
executed.

And this branch conditions should be
tested for the true and also for the false.

So, the branch conditions are tested for
both being true and the false,

so that all the statements can be covered.

The next one is the data flow testing.

This testing technique
emphasizes to cover all

the data variables
included in the program.

So, here we are considering
not the statements

and instructions
but all the variables.

So, it tests
whether the variables were declared

and defined and
whether they were used or changed.

So, these are
the tests to be done on the variables

defined in
the program in our data flow testing.

So, in this way you have discussed on this
white box testing techniques.

Thanks for watching this video.

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