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论文作者:www.51lunwen.org论文属性:作业 Assignment登出时间:2016-01-05编辑:zhaotianyun点击率:5879
论文字数:1654论文编号:org201512141330526990语种:英语 English地区:澳大利亚价格:免费论文
关键词:needs analysisFeasibility Study可行性研究
摘要:摘要:本文主要对可行性研究在技术、文化、法律、市场等方面作了一定的介绍。
In particular, a formal and formally verified specification provides a more precise, more consistent and more complete starting point for the testing process and the obtained tests can be formally validated whether they test what should be tested. Moreover, the use of formal methods allows automating the generation of tests from formal specifications, thus leading to a faster, cheaper and less error-prone testing process. And finally, formal testing turns out to be a good starting point for introducing formal methods in software development.
Software Testing Types:
Black box testing - Internal system design is not considered in this type of testing. Tests are based on requirements and functionality.
White box testing - This testing is based on knowledge of the internal logic of an application's code. Also known as Glass box Testing. Internal software and code working should be known for this type of testing. Tests are based on coverage of code statements, branches, paths, conditions.
Unit testing - Testing of individual software components or modules. Typically done by the programmer and not by testers, as it requires detailed knowledge of the internal program design and code. May require developing test driver modules or test harnesses.
Incremental integration testing - Bottom up approach for testing i.e. continuous testing of an application as new functionality is added; Application functionality and modules should be independent enough to test separately. Done by programmers or by testers.
Integration testing - Testing of integrated modules to verify combined functionality after integration. Modules are typically code modules, individual applications, client and server applications on a network, etc. This type of testing is especially relevant to client/server and distributed systems.
Functional testing - This type of testing ignores the internal parts and focus on the output is as per requirement or not. Black-box type testing geared to functional requirements of an application.
System testing - Entire system is tested as per the requirements. Black-box type testing that is based on overall requirements specifications, covers all combined parts of a system.
End-to-end testing - Similar to system testing, involves testing of a complete application environment in a situation that mimics real-world use, such as interacting with a database, using network communications, or interacting with other hardware, applications, or systems if appropriate.
Sanity testing - Testing to determine if a new software version is performing well enough to accept it for a major testing effort. If application is crashing for initial use then system is not stable enough for further testing and build or application is assigned to fix.
Regression testing - Testing the application as a whole for the modification in any module or functionality. Difficult to cover all the system in regression testing so typically automation tools are used for these testing types.
Acceptance testing -Normally this type of testing is done to verify if system meets the customer specified requirements. User or customers do this testing to determine whether to accept application.
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