Tutorials Hut

Tutorials Hut

  • Testing Foundation

      Basics of Software Testing
       What is Software Testing?
       Objective of Testing
       Why is testing necessary?
       Common Terms used in Testing
       Verification Vs Validations
       QA Vs QC
       Debugging Vs Testing
       Seven Testing Principles
       SDLC Vs STLC
       Fundamentals of Test Process
       Software quality Factors
       Software Development Models
       Waterfall Model
       V models
       Iterative Model
       Test Levels
       Component Testing
       Integration Testing
       System Testing
       Acceptance Testing
       Strategies for Integration Testing
       Big Bang
       Stubs and Driver
       Top Down Testing
       Bottom Up Testing
       Test Types
       Functional Testing
       Non- Functional Testing
       Structural Testing
       Re-testing & Regression Testing
       Static AND Dynamic Techniques
       Static Technique
       Dynamic Technique
       Static Analysis by Tools
       White Box Techniques
       Statement Coverage Testing
       Branch Coverage Testing
       Decision Coverage Testing
       Path Coverage
       Black Box Techniques
       Equivalence Partitioning
       Boundary Value Analysis
       Decision Table testing
       State Transition testing
       Experience Based TestingTechniques
       Random Testing
       Exploratory Testing
       Error Guessing
       Functional Testing
       Integration Testing
       Unit Testing
       System Testing
       Smoke testing
       Sanity testing
       Regression Testing
       Usability Testing
       Security Testing
       User Acceptance Testing
       White Box & Black Box Testing
       Globalization & Localization Testing
       Non Functional Testing
       Compatibility testing
       Endurance testing
       Load testing
       Performance testing
       Recovery testing
       Scalability testing
       Stress testing
       Volume testing
       Test Planning and Estimation
       Test Planning
       Test Strategies Vs Test Plan
       Test Approaches
       Risk and Testing
       Product Risks
       Project Risks
       Defect Management
       Defect LifeCycle
       Severity Vs Priority

  • What is Black Box Testing? | Techniques

      • Black Box Testing is testing technique having no knowledge of the internal functionality/structure of the system
      • It is also called Behavioural, Functional, Opaque-Box, Closed-Box etc
      • focuses on testing the function of the program or application against its specifications
      • Determines whether combinations of inputs and operations produce expected results
    Black box testing techniques

    Black box Testing Techniques

          • Equivalence partitioning.
          • Boundary Value Analysis
          • Decision table testing
          • State Transition Testing
          • Error Guessing

    Advantages of Black-Box Testing

          • More effective on larger units of code than glass box testing
          • Tester needs no knowledge of implementation, including specific programming languages
          • Tester and programmer are independent of each other

    Below is the overview of each black black box technique.

    1) Equivalence partitioning

        • It is also known as Equivalence Class Partitioning (ECP)
        • It is a specification-based or black-box technique
        • The input data is divided into different equivalence data classes – which are generally termed as ‘Valid’ and ‘Invalid’.
        • Test only one condition from each partition or equivalence.
        • It reduces the number of test cases to a finite list of testable test cases covering maximum possibilities

    2) Boundary Value analysis

        • Boundary value analysis is a selection of test cases that takes boundary values as inputs. It is based on the assumption that errors are usually found on boundaries.
        • It can be applied at all levels/phases of testing
        • Boundaries are good place to look for defects
        • Boundary Value Analysis is the next part of Equivalence Partitioning for designing test cases where test cases are selected at the edges of the equivalence classes.

    3) Decision table testing

        • A black-box test design technique in which test cases are designed to execute the combinations of inputs and their corresponding behaviour shown in a decision table.
        • It is referred to as a ’cause-effect’ table
        • Each column can then be considered as a test case of a business rule
        • Decision Table Testing is good for testing business rules or combinations
        • Contains conditions (Input) and actions (Outputs)

    4) State Transition Testing

        • A black box testing technique
        • State-transition diagrams are very useful for describing the behaviour of a system and are part of the Software Design Document.
        • Tests are designed to execute valid and invalid state transitions
        • State-Transition diagrams are an excellent tool to capture certain types of system requirements and to document internal system design.
        • This technique is used when features of a system are represented as states, which transform to another state.

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