About tesing

test case
A test case is a series of tests used to determine whether one particular thing works properly. Often that means trying the same operation over and over again with little in the procedure.

white box testing
    white box testing uses specific knowledge of programming code to examine outputs. The test is accurate only if the tester knows what the program is supposed to do.

black box testing
    A software testing technique whereby the internal workings of the item being tested are not known by the tester.The tester does not ever examine the programming code and does not need any further knowledge of the program other than its specifications.