INGENIERIA DE SOFTWARE IAN SOMMERVILLE 7MA EDICION PDF

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Ian Sommerville Software Engineering, 6th edition. Chapter 20 Slide 2 Defect testing l Testing programs to establish the presence of system defects Slide 3 Ian Sommerville Software Engineering, 6th edition.

Chapter 20 Slide 3 Objectives l To understand testing techniques that are geared to discover program faults l To introduce guidelines for interface testing l To understand specific approaches to object- oriented testing l To understand the principles of CASE tool support for testing Slide 4 Ian Sommerville Software Engineering, 6th edition. Chapter 20 Slide 5 The testing process l Component testing Testing of individual program components Usually the responsibility of the component developer except sometimes for critical systems Tests are derived from the developers experience l Integration testing Testing of groups of components integrated to create a system or sub-system The responsibility of an independent testing team Tests are based on a system specification Slide 6 Ian Sommerville Software Engineering, 6th edition.

Chapter 20 Slide 7 Defect testing l The goal of defect testing is to discover defects in programs l A successful defect test is a test which causes a program to behave in an anomalous way l Tests show the presence not the absence of defects Slide 8 Ian Sommerville Software Engineering, 6th edition. Chapter 20 Slide 8 l Only exhaustive testing can show a program is free from defects.

However, exhaustive testing is impossible l Tests should exercise a system's capabilities rather than its components l Testing old capabilities is more important than testing new capabilities l Testing typical situations is more important than boundary value cases Testing priorities Slide 9 Ian Sommerville Software Engineering, 6th edition. Chapter 20 Slide 9 l Test data Inputs which have been devised to test the system l Test cases Inputs to test the system and the predicted outputs from these inputs if the system operates according to its specification Test data and test cases Slide 10 Ian Sommerville Software Engineering, 6th edition.

Chapter 20 Slide 11 Black-box testing l An approach to testing where the program is considered as a black-box l The program test cases are based on the system specification l Test planning can begin early in the software process Slide 12 Ian Sommerville Software Engineering, 6th edition.

Chapter 20 Slide 13 Equivalence partitioning l Input data and output results often fall into different classes where all members of a class are related l Each of these classes is an equivalence partition where the program behaves in an equivalent way for each class member l Test cases should be chosen from each partition Slide 14 Ian Sommerville Software Engineering, 6th edition.

Chapter 20 Slide 15 l Partition system inputs and outputs into equivalence sets If input is a 5-digit integer between 10, and 99,, equivalence partitions are 10, l Choose test cases at the boundary of these sets , , , , Equivalence partitioning Slide 16 Ian Sommerville Software Engineering, 6th edition. Chapter 20 Slide 1 Chapter 20 Software Download for free Report this document.

Slide 1 Ian Sommerville Software Engineering, 6th edition. Embed Size px x x x x Chapter 5 System Modeling Sommerville, "software engineering ", 9 th Ed. Chapter 27Slide 1 Chapter 27 Software Change. Adapted from Ian Sommerville , Software Engineering Chapter 5 1 Documents.

Software testing techniques 3. Software testing From I. Sommerville textbook Kaunas University of Technology. Sommerville, Chapter 23 Slide 1 Software testing.

Software testing - Systems, software and technology? From: Sommerville, I. Software Engineering, 5th edition Configuration management - Systems, software and?

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©Ian Sommerville 2000 Software Engineering, 6th edition. Chapter 20 Slide 1 Chapter 20 Software...

Term Definitionadvice Thecodeimplementingaconcern. Log in Get Started. Objectives -? Chapter 32 Slide See Full Reader. Download for free Report this document.

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