Testing

We use different methods that can be used for software testing. Most importantly is finding bugs, saving you money, time and making sure the quality of your software is better than your customers expectations.

Black-Box/Discovery Testing

 

The strategy of testing without having any information of the inside workings of the application is called black-box testing. The tester is neglectful of the framework design and does not have admittance to the source code. Commonly, while playing out a discovery test, a tester will connect with the framework's UI by giving information sources and looking at yields without knowing how and where the data sources are worked upon.

The accompanying table records the focal points and impediments of discovery testing.

 

Advantages Disadvantages
  • As the tester has knowledge of the source code, it becomes very easy to find out which type of data can help in testing the application effectively.
  • It helps in optimizing the code.
  • Extra lines of code can be removed which can bring in hidden defects.
  • Due to the tester's knowledge about the code, maximum coverage is attained during test scenario writing.
  • Constrained scope, since just a limited number of test situations are really performed.
  • Inefficient testing, because of the way that the tester just doesn't have enough knowledge about the application which maks it hard to test. 
  • It is difficult to maintain white-box testing, as it requires specialized tools like code analyzers and debugging tools.

 

 

White-Box Testing

 

White-box testing is the nitty-gritty examination of inner logic and structure of the code. White-box testing is likewise called glass testing or open-box testing. Keeping in mind the end goal to perform white-box testing on an application, a tester needs to know the inside workings of the code.

The tester needs to take a look inside the source code and discover which unit/piece of the code is executing improperly.

The accompanying table records the favorable circumstances and inconveniences of white-box testing.

 

Advantages Disadvantages
  • Because the tester knows the source code, it's actually very easy to find out which type of data can help in testing the application effectively.
  • It helps in optimizing the code.
  • Extra lines of code can be removed which can bring in hidden defects.
  • Maximum test coverage is attained during test cases writing.
  • A bit of extra cost because very experienced testers must do this kind of test.
  • It's not a test that will cover the entire application or 100% of the code because of the nature and complexity of applications.
  • It is more demanding to perform white-box testing, as it requires specialized tools like code analyzers and debugging tools.

 

 

Grey-Box Testing

 

Grey-box testing is a technique to test the application with restricted knowledge of the knots and bolts of an application. Acing the space of an application dependably gives the tester an edge over somebody with limited information. Unlike black-box testing, where the tester only tests the application's user interface; in grey-box testing, the tester has access to design documents and the database. Having this knowledge, a tester can prepare better test data and test scenarios while making a test plan.

 

Advantages Disadvantages
  • Merging the two black-box and white-box testing offering better benefits wherever possible.
  • Grey box testers don't depend on the source code; instead they rely on interface definition and functional specifications.
  • Perfect test scenarios can be designed on the basis of the information available especially around communication protocols and data type handling.
  • The test is performed from the point of view of the user and not the designer.
  • Since the access to source code is not available, the ability to go over the code and test coverage is limited.
  • The tests can be redundant if the software designer has already run own test.
  • Testing every possible input stream is unrealistic because it would take an unreasonable amount of time; therefore, many program paths will go untested.