How can you differentiate black box testing and white box testing? Is white box and glass box testing same?

Black box testing: we test using Adhoc method..The tester no need to have knowledge about the code

Whitebox and glass box are one and the same

black box Testing:- testing of functionality of software .It does not need knowledge of coding.It is also called as Behavioral testing/obaque box testing.

White Box testing:-Testing of internal structure of software.It require knowlege of coding.It is also called as structral /glass box testing.

glass Box & white Box testings are same.

black box Testing:- testing of functionality of software .It does not need knowledge of coding.It is also called as Behavioral testing/obaque box testing.

White Box testing:-Testing of internal structure of software.It require knowlege of coding.It is also called as structral /glass box testing.

glass Box & white Box testings are same.

white box testing is done by the qa people . they dont involve in development

Black-box and white-box are test design methods. Black-box test design treats the system as a "black-box", so it doesn't explicitly use knowledge of the internal structure. Black-box test design is usually described as focusing on testing functional requirements. Synonyms for black-box include: behavioral, functional, opaque-box, and closed-box. White-box test design allows one to peek inside the "box", and it focuses specifically on using internal knowledge of the software to guide the selection of test data. Synonyms for white-box include: structural, glass-box and clear-box.

The major contradiction is that1) Generally black box testing will begin early in the software development i.e. in requirement gathering phase itself. But for white box testing approach one has to wait for the designing has to complete.2)We can use black testing strategy almost any size either it may be small or large.But white box testing will be effective only for small lines of codes or piece of codes.3) In white box testing we can not test Performance of the application.But in Black box testing we can do it.4 ) In general we have to write large quantity of test cases for whitebox. But in black box its a selcection of sample test cases.

the main diff between the black box& white box testing is that the in case of the black box testing we are not going to see the code and how it is exe and in and in case of white box testing we need to check all looop inside the code,black box is giving i/p and geeting o/p but ina case of white box we have how much time this each loop is taking and etc

Block box testing is nothing but testing the application with out having internal structural knowledge.
White box testing is nothing but testing the application with knowing the internal structural knowledge.
white box testing and glass box testing are one and same

Black box testing is something like a black box....... about which i don know wht is inside this one. We just know that if we give this type of input it results this type of out put. How ...........I dont know. Even during black box testing we r not bother about how it works. That is why it is performed after BUILD.


In white box testing .......each and eveything like functionality, modules etc. their expected results and behaviours are well known. And now i am going to test all these funtionality one by one or with combination of others. so this testing is performed before  building the .exe.


Whitebox and glass box testing is exactly same.



further one more box test called grey box testing is used which is the combination of the abouve two.

Black box Testing: It completely tests the functional and non-functional attributes of the application without getting access to code. i.e. application is tested without getting access to code.

White box Testing: It tests the application with having access to the code. Here error in the code or codes logic can be found out.

Yes white box and glass box testing are the same.