Homework Answers
Purpose of Unit testing:
Unit testing is the initial or first level to test the software.
Test Data
- Data need to perform testing.
- Testers don't have exact or actual data to test
- The test data is to check the probability of error that may occur.
- There are various tools to generate or create test data
- Is used to track the actual output vs expected output.
For example:
Consider a login page having username and password. The conditions are
User name should accept only alphabets and numbers and should not allow blank spaces
passwords should be a combination of alphanumeric and symbols and have more than 8 characters.
The test data should be written as cases
case 1: leave the username as blank and enter the password
Expected Result: It should throw an error
Case 2: Enter symbols in a username and enter the password
Expected Result: It should throw an error
Likewise, the cases for all combinations should be tested.
Unit testing is used to
- To test the individual module/components/units of software.
- Ensure to validate every single unit/module of the software.
Who will perform unit testing?
Usually done by the developer who develops the software.
Integration testing:
The individual module/unit/components of software will be combined together and tested to check whether all the modules are properly integrated and working well.
|
Unit Testing |
Integration Testing |
|
The first phase of testing |
The third phase of testing |
|
Done by the developer who develops the software |
Done by the tester |
|
Individual components are tested |
Individual components are combined and tested |
The objective of integration testing
To find the problems or errors raised when individual components are integrated.
User Acceptance Testing:
- Usually done by the client or the end-user who is going to use the software.
- The final phase of testing
- Done usually before introducing the products in the market.
Who will perform UAT?
Client/end-user
Objective of UAT
- To check whether the expected output meets the actual output.
- To check whether all the features added are necessary
Who defines test data for UAT?
Client
End-user
Add Answer to:
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Notes on Testing • Unit Testing - creates a test case for each module of code that been authored. The goal is to ensure correctness of individual methods • Integration Testing - modules that were individually tested are now tested as a collection. This form of testing looks at the larger picture and determines if bugs are present when modules are brought together • System Testing - seeks to test the entire software system and how it adheres to...
SHORT CASE STUDY Green Test Laboratory (GTL) performs heat testing and stress testing on materials and operates at full capacity. Under its current simple costing system, GTL aggregates all operating costs of $2,404,000 into a single cost pool. GTL calculates a rate per test-hour of $18.78, ($2,404,000/128,000 total tests-hours). Heat testing uses 80,000 test-hours and stress testing uses 48,000 test-hours. Lee Chang, GTL's management accountant, believes that there is enough variation in test procedures and cost structures to establish separate...
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