Software Testing Types and Levels

Types of Testing

• Unit Testing: Testing individual units of code, such as functions or methods, to ensure they work as expected.
• Integration Testing: Testing how different units of code work together to ensure seamless integration.
• System Testing: Testing the entire system end-to-end to ensure it meets the requirements.
• Acceptance Testing: Testing to ensure the system meets the acceptance criteria defined by the stakeholders.

Testing Levels

• White Box Testing: Testing the internal workings of the system, requiring knowledge of the internal structure and implementation details.
• Black Box Testing: Testing the system's functionality without knowledge of the internal workings, focusing on inputs and outputs.
• Gray Box Testing: A combination of white box and black box testing, requiring some knowledge of the internal workings.

Testing Techniques

• Equivalence Partitioning: Dividing input data into partitions based on equivalence criteria and testing each partition at least once.
• Boundary Value Analysis: Testing the boundaries of input data, such as minimum and maximum values, to ensure the system behaves correctly.
• State Transition Testing: Testing the different states of a system and the transitions between them.

Test Case Design

• Test Case: A set of steps to test a specific functionality or requirement.
• Test Script: A detailed, step-by-step procedure to execute a test case.
• Test Data: Data used to test the system, including input data and expected results.

Test Metrics

• Test Coverage: The percentage of the system's code or functionality that has been tested.
• Defect Density: The number of defects per unit of code or functionality.
• Test Effectiveness: The percentage of defects found by testing.

Types of Testing

• Unit testing involves testing individual units of code, such as functions or methods, to ensure they work as expected.
• Integration testing ensures that different units of code work together seamlessly.
• System testing involves testing the entire system end-to-end to ensure it meets the requirements.
• Acceptance testing ensures that the system meets the acceptance criteria defined by the stakeholders.

Testing Levels

• White box testing requires knowledge of the internal structure and implementation details to test the internal workings of the system.
• Black box testing focuses on the system's functionality, testing inputs and outputs without knowledge of the internal workings.
• Gray box testing combines white box and black box testing, requiring some knowledge of the internal workings.

Testing Techniques

• Equivalence partitioning involves dividing input data into partitions based on equivalence criteria and testing each partition at least once.
• Boundary value analysis involves testing the boundaries of input data, such as minimum and maximum values, to ensure the system behaves correctly.
• State transition testing involves testing the different states of a system and the transitions between them.

Test Case Design

• A test case is a set of steps to test a specific functionality or requirement.
• A test script is a detailed, step-by-step procedure to execute a test case.
• Test data includes input data and expected results used to test the system.

Test Metrics

• Test coverage is the percentage of the system's code or functionality that has been tested.
• Defect density is the number of defects per unit of code or functionality.
• Test effectiveness is the percentage of defects found by testing.

Quiz on different types of software testing and testing levels, including unit testing, integration testing, system testing, and acceptance testing.