TAILIEUCHUNG - Lecture Software engineering: Lecture 8 - Ivan Marsic

Lecture 8: Software testing. The main contents of this chapter include all of the following: Overview of software testing, test coverage and code coverage, practical aspects of unit testing, integration and system testing. | Ivan Marsic Rutgers University LECTURE 8: Software Testing Topics Overview of Software Testing Test Coverage and Code Coverage Practical Aspects of Unit Testing Integration and System Testing Overview of Software Testing “Testing shows the presence, not the absence of bugs.” —Edsger W. Dijkstra A fault, also called “defect” or “bug,” is an erroneous hardware or software element of a system that can cause the system to fail Test-Driven Development (TDD) Every step in the development process must start with a plan of how to verify that the result meets a goal The developer should not create a software artifact (a system requirement, a UML diagram, or source code) unless they know how it will be tested A test case is a particular choice of input data to be used in testing a program A test is a finite collection of test cases Why Testing is Hard A key tradeoff of testing: testing as many potential cases as possible while keeping the economic costs limited Our goal

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