Testing Techniques

• Boundary Value Analysis is a Black box testing methodology.

• It is used to test boundary values because the input values near
  the boundary have higher chances of error. For eg. Assume that,
  age is a variable of any function and its minimum value is 16
  and the maximum value is 40 both 16 and 40 will be considered as
  boundary values.

• Decision table testing is a software testing technique used to
  test system behavior for different inputs combinations. It is a
  black box testing methodology. For eg. How to make decision table
  for login page. The user provide the correct username and
  password the user directed to homepage. If any of inputs is
  wrong, an error message will be displayed.

Enter correct username and password, click on login the expected
result will be the user should be navigated to the homepage.

• Use case testing is a black box testing methodology. It
  helps testers to identify test scenarios that exercise whole
  system on each transaction basis from start to finish.
  
  For eg. Online E-commerce purchase might include separate
  reports for adding an item to the cart, selecting payment type
  and choosing a shipping and delivery option.

• Liner Code Sequence and Jump(LCSAJ) is a white box testing
  methodology. It is used to identify the code coverage, which
  begins at the start of the program or branch and ends at the end
  of the program or the branch. For. eg.