White box black box test

    White box test and black box test we have been in touch with the soft workers, for a long time did not look, review

First, the definition

    White box test: The logical path in the software is covered by checking the logical structure inside the software.

    Black box test: From the user's point of view, from the input and output data of the corresponding relationship from the test

    From the definition of white box, black box good tall ah, seems to be far away from us, it is not, we are knocking on the computer room when it has been used

  For example, the input data in the control to see if the output is consistent with the expected, this is a black box test; When the output does not match the expected results, I

  We will check the logic of the Code and so on, which is equivalent to white box testing.

Ii. Specific methods

    White box test: Overlay standard with logic overlay, loop overlay, and basic path overlay

Coverage is to have all the situation to be tested, so that "white box" is also a poor lift path test

Requirements: 1. All independent paths in a module are used at least once

      2. Test true and False for all logical values

      3. Run all loops in the upper and lower bounds and within the operational range

      4. Check internal data structures to ensure their effectiveness

    Black box test: detects if each function is working properly

        Focus on testing the functional requirements of the software

Objective: 1. test for incorrect or missing function

      2. Test the error of the interface

      3. Test the input and output errors

      4. Test the database access error

      5. Test for performance errors, etc.

    Difference:

White-Box testing is a drill-down to code-level testing, where testers need to know the code needs and code very well, with high technical content

        Black box testing is mainly for the function of the system testing, but also the performance of the system, pressure, security and other aspects of the test

     In the Quality Control department can learn more about the test, the test has a lot of different understanding, this test compared to ITOO1.0 and 2.0来 said comparison

  Formal point, after all, have had some experience, hope can learn more things

White box black box test