TAILIEUCHUNG - Lecture Software testing and analysis - Chapter 17: Test execution

This chapter describes approaches for creating the run-time support for generating and managing test data, creating scaffolding for test execution, and automatically distinguishing between correct and incorrect test case executions. | Test Execution SOFTWARE TESTING MO ANALYSIS c 2007 Mauro Pezzè Michal Young Ch 17 slide 1 Learning objectives Appreciate the purpose of test automation - Factoring repetitive mechanical tasks from creative human design tasks in testing Recognize main kinds and components of test scaffolding Understand some key dimensions in test automation design - Design for testability Controllability and observability - Degrees of generality in drivers and stubs - Comparison-based oracles and self-checks SOFTWARE TESTING g__________________________________________________________ c 2007 Mauro Pezzè Michal Young Ch 17 slide 2 Automating Test Execution Designing test cases and test suites is creative - Like any design activity A demanding intellectual activity requiring human judgment Executing test cases should be automatic - Design once execute many times Test automation separates the creative human process from the mechanical process of test execution SOFTWARE TESTING ANDJTNALYSIS c 2007 Mauro Pezzè Michal Young Ch 17 slide 3 Generation From Test Case Specifications to Test Cases Test design often yields test case specifications rather than concrete data - Ex a large positive number not 420023 - Ex a sorted sequence length 2 not Alpha Beta Chi Omega Other details for execution may be omitted Generation creates concrete executable test cases from test case specifications c 2007 Mauro Pezzè Michal Young Ch 17 slide 4 Scaffolding Example Tool Chain for Test Case Generation Execution We could combine . - A combinatorial test case generation like to create test data Optional Constraint-based data generator to concretize individual values . from positive integer to 42 - DDSteps to convert from spreadsheet data to JUnit test cases - JUnit to execute concrete test cases Many other tool chains are possible . - depending on application domain Code produced to support development activities especially testing - Not part of the product as seen by the end user - May be .

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