This ppt explores the software testing strategy in Software Engineering. It is more useful for the Arts and Science and Engineering students to understand the Software Engineering. It is more useful in their examination time. This ppt is prepared based on their examination point of view.
It delivers details about System Testing which is one of the topics of Software Engineering. It delineates the definition of system testing and its types such as security testing, risk testing and deployment testing etc. This ppt is prepared based on examination point of view. the Engineering and arts and science computer students can get benefit of it.
Verification ensures software meets specifications, while validation ensures it meets user needs. Both establish software fitness for purpose. Verification includes static techniques like inspections and formal methods to check conformance pre-implementation. Validation uses dynamic testing post-implementation. Techniques include defect testing to find inconsistencies, and validation testing to ensure requirements fulfillment. Careful planning via test plans is needed to effectively verify and validate cost-efficiently. The Cleanroom methodology applies formal specifications and inspections statically to develop defect-free software incrementally.
Testbytes is a community of software testers who are passionate about quality and love to test. We develop an in-depth understanding of the applications under test and include software testing strategies that deliver quantifiable results.
In short, we help in building incredible software.
This ppt describes about the bug.. and how bugs provide clues for debugging in software? , What will be consider in debugging a software? Debugging strategies and automatic debugging. The ppt prepared based on examination point of view for software engineering subject
This document discusses software quality assurance. It defines software quality and describes two types - quality of design and quality of conformance. It discusses quality concepts at the organizational, project, and process levels. It also describes software reviews, their types and purposes. Software quality assurance aims to establish organizational procedures and standards to achieve high quality software. Key SQA activities include applying technical methods, reviews, testing, enforcing standards and measurement.
System Testing. SYSTEM TESTING is a level of software testing where a complete and integrated software is tested. The purpose of this test is to evaluate the system's compliance with the specified requirements. system testing: The process of testing an integrated system to verify that it meets specified requirements.
Black box testing refers to testing software without knowledge of its internal implementation by focusing on inputs and outputs. There are several techniques including boundary value analysis, equivalence partitioning, state transition testing, and graph-based testing. Black box testing is useful for testing functionality, behavior, and non-functional aspects from the end user's perspective.
It delivers details about System Testing which is one of the topics of Software Engineering. It delineates the definition of system testing and its types such as security testing, risk testing and deployment testing etc. This ppt is prepared based on examination point of view. the Engineering and arts and science computer students can get benefit of it.
Verification ensures software meets specifications, while validation ensures it meets user needs. Both establish software fitness for purpose. Verification includes static techniques like inspections and formal methods to check conformance pre-implementation. Validation uses dynamic testing post-implementation. Techniques include defect testing to find inconsistencies, and validation testing to ensure requirements fulfillment. Careful planning via test plans is needed to effectively verify and validate cost-efficiently. The Cleanroom methodology applies formal specifications and inspections statically to develop defect-free software incrementally.
Testbytes is a community of software testers who are passionate about quality and love to test. We develop an in-depth understanding of the applications under test and include software testing strategies that deliver quantifiable results.
In short, we help in building incredible software.
This ppt describes about the bug.. and how bugs provide clues for debugging in software? , What will be consider in debugging a software? Debugging strategies and automatic debugging. The ppt prepared based on examination point of view for software engineering subject
This document discusses software quality assurance. It defines software quality and describes two types - quality of design and quality of conformance. It discusses quality concepts at the organizational, project, and process levels. It also describes software reviews, their types and purposes. Software quality assurance aims to establish organizational procedures and standards to achieve high quality software. Key SQA activities include applying technical methods, reviews, testing, enforcing standards and measurement.
System Testing. SYSTEM TESTING is a level of software testing where a complete and integrated software is tested. The purpose of this test is to evaluate the system's compliance with the specified requirements. system testing: The process of testing an integrated system to verify that it meets specified requirements.
Black box testing refers to testing software without knowledge of its internal implementation by focusing on inputs and outputs. There are several techniques including boundary value analysis, equivalence partitioning, state transition testing, and graph-based testing. Black box testing is useful for testing functionality, behavior, and non-functional aspects from the end user's perspective.
In this technique, test cases are developed using the use cases of the system. A use case encompass the various actors and their interactions with the system. Use cases cover the complete transactions from start to finish. These test cases depict the actual use of software by the end user.
The document discusses verification and validation (V&V) in software engineering. It defines verification as ensuring a product is built correctly, and validation as ensuring the right product is built. V&V aims to discover defects and assess if a system is usable. Static and dynamic verification methods are covered, including inspections, testing, and automated analysis. The document outlines V&V goals, the debugging process, V-model development, test planning, and inspection techniques.
The document discusses formal approaches to software quality assurance (SQA). It states that SQA can be improved through software engineering practices like technical reviews, multi-tiered testing, controlling work products and changes, and following standards. It also argues that a more rigorous mathematical approach is needed for SQA since programs can be viewed as mathematical objects with rigorous syntax and semantics defined for languages, allowing proofs of correctness.
Testing software is conducted to ensure the system meets user needs and requirements. The primary objectives of testing are to verify that the right system was built according to specifications and that it was built correctly. Testing helps instill user confidence, ensures functionality and performance, and identifies any issues where the system does not meet specifications. Different types of testing include unit, integration, system, and user acceptance testing, which are done at various stages of the software development life cycle.
The document outlines topics related to quality control engineering and software testing. It discusses key concepts like the software development lifecycle (SDLC), common SDLC models, software quality control, verification and validation, software bugs, and qualifications for testers. It also covers the quality control lifecycle, test planning, requirements verification techniques, and test design techniques like equivalence partitioning and boundary value analysis.
This lecture is about the detail definition of software quality and quality assurance. Provide details about software tesing and its types. Clear the basic concepts of software quality and software testing.
SQA encompasses quality assurance and control tasks including technical reviews and testing, effective engineering practices and tools, controlling work products and changes, ensuring compliance with standards, and measurement reporting. The goals of SQA include addressing quality through solid methods and measures, reviews, and testing. An SQA plan identifies evaluations, audits, standards, procedures, work products, and feedback. The SQA group reviews processes, work products, and handles deviations to ensure quality.
This document discusses software quality factors and McCall's quality factor model. It describes McCall's three main quality factor categories: product operation factors, product revision factors, and product transition factors. Under product operation factors, it outlines reliability, correctness, integrity, efficiency, and usability requirements. It then discusses product revision factors of maintainability, flexibility, and testability. Finally, it covers product transition factors including portability, reusability, and interoperability. The document provides details on the specific requirements for each quality factor.
This document discusses software testing principles and concepts. It defines key terms like validation, verification, defects, failures, and metrics. It outlines 11 testing principles like testing being a creative task and test results needing meticulous inspection. The roles of testers are discussed in collaborating with other teams. Defect classes are defined at different stages and types of defects are provided. Quality factors, process maturity models, and defect prevention strategies are also summarized.
Difference between functional testing and non functional testingpooja deshmukh
Up till now, you must have seen separate articles for Functional Testing and Non-Functional testing. In any case, in today’s article we will see the real distinction between Functional Testing and Non-Functional Testing.
1. The document discusses different types of software testing including manual testing, automation testing, black-box testing, white-box testing, grey-box testing, and different levels of testing like unit testing, integration testing, system testing, regression testing, and acceptance testing.
2. It provides details on when each type of testing is used and their objectives such as finding defects, ensuring quality, and meeting requirements.
3. The key types of testing covered include functional testing, which has sub-types like unit, integration, system, regression, and acceptance testing, and non-functional testing.
This document provides an introduction to software testing. It defines software testing as a process used to identify correctness, completeness, and quality of computer software. The key points covered include: why software testing is important; who should be involved in testing; when testing should start and stop in the software development lifecycle; the differences between verification and validation; types of errors; types of testing including manual and automation; methods like black box and white box testing; levels of testing from unit to acceptance; and definitions of test plans and test cases.
Defining the Problem - Goals and requirementsStephennancy
This document discusses goals and requirements in software engineering projects. It makes the following key points:
- Goals define targets for both the development process and final work products, and can be qualitative or quantitative. Examples of each type are given.
- Requirements specify the capabilities needed to solve the problem, and include functional, performance, and interface requirements. They provide standards for the project and product.
- Both goals and requirements should be specified quantitatively when possible to avoid later misunderstandings, though this can be difficult in the planning phase. Methods for verification should also be defined.
- High-level goals can be translated into specific requirements related to quality attributes like reliability. Milestones can quantify goals
Testing involves finding errors in a program. The goal is to assume a program contains errors and test to find as many as possible. Different testing techniques include white box testing by developers and black box testing by testers. Testing levels include unit, integration, system, and user acceptance testing. Developers and testers have different goals - developers want code to work while testers try to make code fail. Good development practices from a tester's view include doing own acceptance tests, fixing bugs, writing helpful error messages, and not artificially adding bugs. Good relationships between project managers, developers and testers help ensure quality.
Software testing is an important phase of the software development process that evaluates the functionality and quality of a software application. It involves executing a program or system with the intent of finding errors. Some key points:
- Software testing is needed to identify defects, ensure customer satisfaction, and deliver high quality products with lower maintenance costs.
- It is important for different stakeholders like developers, testers, managers, and end users to work together throughout the testing process.
- There are various types of testing like unit testing, integration testing, system testing, and different methodologies like manual and automated testing. Proper documentation is also important.
- Testing helps improve the overall quality of software but can never prove that there
A software process provides stability, control, and organization for software development. It consists of a series of predictable steps that lead to a timely, high-quality product. Key elements include framework activities like planning, modeling, requirements analysis, design, construction, testing, and deployment. The specific tasks and level of rigor for each activity may vary based on the project. Process assessment ensures the process meets criteria for successful software engineering. The primary goal of any process is high-quality software delivered on time through reduced rework.
The document discusses software testing concepts and processes. It defines key terms like errors, faults, failures, test cases, test suites and test harnesses. It describes different types of testing like unit testing, integration testing, system testing and acceptance testing. It explains the testing process which involves test planning, designing test cases, and test execution. Defects found during testing are logged and tracked through different states from submission to fixing to verification and closure. Test cases are specified in documents before usage to ensure quality.
Software testing is the process of evaluation a software item to detect differences between given input and expected output. Also to assess the feature of A software item. Testing assesses the quality of the product. Software testing is a process that should be done during the development process. In other words software testing is a verification and validation process.
Software testing can also provide an objective, independent view of the software to allow the business to appreciate and understand the risks of software implementation. Test techniques include, but are not limited to the process of executing a program or application with the intent of finding software bugs (errors or other defects).
Software testing can be stated as the process of validating and verifying that a computer program/application/product:
• meets the requirements that guided its design and development,
• works as expected,
• can be implemented with the same characteristics,
• and satisfies the needs of stakeholders.
Software Development Process Cycle:-
PLAN (P): Device a plan. Define your objective and determine the strategy and supporting methods required to achieve that objective.
DO (D): Execute the plan. Create the conditions and perform the necessary training to execute the plan.
CHECK (C): Check the results. Check to determine whether work is progressing according to the plan and whether the results are obtained.
ACTION (A): Take the necessary and appropriate action if checkup reveals that the work is not being performed according to plan or not as anticipated.
The document discusses strategies for software testing including:
1) Testing begins at the component level and works outward toward integration, with different techniques used at different stages.
2) A strategy provides a roadmap for testing including planning, design, execution, and evaluation.
3) The main stages of a strategy are unit testing, integration testing, validation testing, and system testing, with the scope broadening at each stage.
The document discusses software quality and achieving high quality software. It notes that software companies often deliver software with known bugs and that low quality software increases risks for developers and users. It also discusses the costs of quality and how management decisions impact quality. Achieving quality involves software engineering methods, project management techniques, quality control, and quality assurance. Reviews, testing, and validation are important parts of the quality process.
In this technique, test cases are developed using the use cases of the system. A use case encompass the various actors and their interactions with the system. Use cases cover the complete transactions from start to finish. These test cases depict the actual use of software by the end user.
The document discusses verification and validation (V&V) in software engineering. It defines verification as ensuring a product is built correctly, and validation as ensuring the right product is built. V&V aims to discover defects and assess if a system is usable. Static and dynamic verification methods are covered, including inspections, testing, and automated analysis. The document outlines V&V goals, the debugging process, V-model development, test planning, and inspection techniques.
The document discusses formal approaches to software quality assurance (SQA). It states that SQA can be improved through software engineering practices like technical reviews, multi-tiered testing, controlling work products and changes, and following standards. It also argues that a more rigorous mathematical approach is needed for SQA since programs can be viewed as mathematical objects with rigorous syntax and semantics defined for languages, allowing proofs of correctness.
Testing software is conducted to ensure the system meets user needs and requirements. The primary objectives of testing are to verify that the right system was built according to specifications and that it was built correctly. Testing helps instill user confidence, ensures functionality and performance, and identifies any issues where the system does not meet specifications. Different types of testing include unit, integration, system, and user acceptance testing, which are done at various stages of the software development life cycle.
The document outlines topics related to quality control engineering and software testing. It discusses key concepts like the software development lifecycle (SDLC), common SDLC models, software quality control, verification and validation, software bugs, and qualifications for testers. It also covers the quality control lifecycle, test planning, requirements verification techniques, and test design techniques like equivalence partitioning and boundary value analysis.
This lecture is about the detail definition of software quality and quality assurance. Provide details about software tesing and its types. Clear the basic concepts of software quality and software testing.
SQA encompasses quality assurance and control tasks including technical reviews and testing, effective engineering practices and tools, controlling work products and changes, ensuring compliance with standards, and measurement reporting. The goals of SQA include addressing quality through solid methods and measures, reviews, and testing. An SQA plan identifies evaluations, audits, standards, procedures, work products, and feedback. The SQA group reviews processes, work products, and handles deviations to ensure quality.
This document discusses software quality factors and McCall's quality factor model. It describes McCall's three main quality factor categories: product operation factors, product revision factors, and product transition factors. Under product operation factors, it outlines reliability, correctness, integrity, efficiency, and usability requirements. It then discusses product revision factors of maintainability, flexibility, and testability. Finally, it covers product transition factors including portability, reusability, and interoperability. The document provides details on the specific requirements for each quality factor.
This document discusses software testing principles and concepts. It defines key terms like validation, verification, defects, failures, and metrics. It outlines 11 testing principles like testing being a creative task and test results needing meticulous inspection. The roles of testers are discussed in collaborating with other teams. Defect classes are defined at different stages and types of defects are provided. Quality factors, process maturity models, and defect prevention strategies are also summarized.
Difference between functional testing and non functional testingpooja deshmukh
Up till now, you must have seen separate articles for Functional Testing and Non-Functional testing. In any case, in today’s article we will see the real distinction between Functional Testing and Non-Functional Testing.
1. The document discusses different types of software testing including manual testing, automation testing, black-box testing, white-box testing, grey-box testing, and different levels of testing like unit testing, integration testing, system testing, regression testing, and acceptance testing.
2. It provides details on when each type of testing is used and their objectives such as finding defects, ensuring quality, and meeting requirements.
3. The key types of testing covered include functional testing, which has sub-types like unit, integration, system, regression, and acceptance testing, and non-functional testing.
This document provides an introduction to software testing. It defines software testing as a process used to identify correctness, completeness, and quality of computer software. The key points covered include: why software testing is important; who should be involved in testing; when testing should start and stop in the software development lifecycle; the differences between verification and validation; types of errors; types of testing including manual and automation; methods like black box and white box testing; levels of testing from unit to acceptance; and definitions of test plans and test cases.
Defining the Problem - Goals and requirementsStephennancy
This document discusses goals and requirements in software engineering projects. It makes the following key points:
- Goals define targets for both the development process and final work products, and can be qualitative or quantitative. Examples of each type are given.
- Requirements specify the capabilities needed to solve the problem, and include functional, performance, and interface requirements. They provide standards for the project and product.
- Both goals and requirements should be specified quantitatively when possible to avoid later misunderstandings, though this can be difficult in the planning phase. Methods for verification should also be defined.
- High-level goals can be translated into specific requirements related to quality attributes like reliability. Milestones can quantify goals
Testing involves finding errors in a program. The goal is to assume a program contains errors and test to find as many as possible. Different testing techniques include white box testing by developers and black box testing by testers. Testing levels include unit, integration, system, and user acceptance testing. Developers and testers have different goals - developers want code to work while testers try to make code fail. Good development practices from a tester's view include doing own acceptance tests, fixing bugs, writing helpful error messages, and not artificially adding bugs. Good relationships between project managers, developers and testers help ensure quality.
Software testing is an important phase of the software development process that evaluates the functionality and quality of a software application. It involves executing a program or system with the intent of finding errors. Some key points:
- Software testing is needed to identify defects, ensure customer satisfaction, and deliver high quality products with lower maintenance costs.
- It is important for different stakeholders like developers, testers, managers, and end users to work together throughout the testing process.
- There are various types of testing like unit testing, integration testing, system testing, and different methodologies like manual and automated testing. Proper documentation is also important.
- Testing helps improve the overall quality of software but can never prove that there
A software process provides stability, control, and organization for software development. It consists of a series of predictable steps that lead to a timely, high-quality product. Key elements include framework activities like planning, modeling, requirements analysis, design, construction, testing, and deployment. The specific tasks and level of rigor for each activity may vary based on the project. Process assessment ensures the process meets criteria for successful software engineering. The primary goal of any process is high-quality software delivered on time through reduced rework.
The document discusses software testing concepts and processes. It defines key terms like errors, faults, failures, test cases, test suites and test harnesses. It describes different types of testing like unit testing, integration testing, system testing and acceptance testing. It explains the testing process which involves test planning, designing test cases, and test execution. Defects found during testing are logged and tracked through different states from submission to fixing to verification and closure. Test cases are specified in documents before usage to ensure quality.
Software testing is the process of evaluation a software item to detect differences between given input and expected output. Also to assess the feature of A software item. Testing assesses the quality of the product. Software testing is a process that should be done during the development process. In other words software testing is a verification and validation process.
Software testing can also provide an objective, independent view of the software to allow the business to appreciate and understand the risks of software implementation. Test techniques include, but are not limited to the process of executing a program or application with the intent of finding software bugs (errors or other defects).
Software testing can be stated as the process of validating and verifying that a computer program/application/product:
• meets the requirements that guided its design and development,
• works as expected,
• can be implemented with the same characteristics,
• and satisfies the needs of stakeholders.
Software Development Process Cycle:-
PLAN (P): Device a plan. Define your objective and determine the strategy and supporting methods required to achieve that objective.
DO (D): Execute the plan. Create the conditions and perform the necessary training to execute the plan.
CHECK (C): Check the results. Check to determine whether work is progressing according to the plan and whether the results are obtained.
ACTION (A): Take the necessary and appropriate action if checkup reveals that the work is not being performed according to plan or not as anticipated.
The document discusses strategies for software testing including:
1) Testing begins at the component level and works outward toward integration, with different techniques used at different stages.
2) A strategy provides a roadmap for testing including planning, design, execution, and evaluation.
3) The main stages of a strategy are unit testing, integration testing, validation testing, and system testing, with the scope broadening at each stage.
The document discusses software quality and achieving high quality software. It notes that software companies often deliver software with known bugs and that low quality software increases risks for developers and users. It also discusses the costs of quality and how management decisions impact quality. Achieving quality involves software engineering methods, project management techniques, quality control, and quality assurance. Reviews, testing, and validation are important parts of the quality process.
Software Engineering and Project Management - Software Testing + Agile Method...Prakhyath Rai
Software Testing: A Strategic Approach to Software Testing, Strategic Issues, Test Strategies for Conventional Software, Test Strategies for Object -Oriented Software, Validation Testing, System Testing, The Art of Debugging.
Agile Methodology: Before Agile – Waterfall, Agile Development.
Software testing is the process of finding errors in a program before delivery to end users, and involves conducting technical reviews and testing components individually before integrating the entire system. Verification ensures software implements functions correctly while validation ensures the software meets customer requirements. An effective testing strategy begins with unit testing at the component level and works outward, specifies requirements early, and emphasizes rapid cycle testing to continuously improve the testing process.
11 steps of testing process - By Harshil BarotHarshil Barot
The 11-step software testing process involves verifying requirements, design, code, and installation as well as validating that user needs are met. The key steps include:
1) Developing a test plan based on an assessment of the development status.
2) Testing requirements, design, code during construction, and software changes to find defects.
3) Executing tests, recording results, and reporting findings throughout the process.
4) Conducting acceptance testing with end users to validate software meets needs.
The goal is to deliver high-quality, bug-free software through a rigorous process of verification and validation activities.
The document provides an overview of topics related to software quality assurance including software testing strategies, project management, risk management, and maintenance. It discusses software quality assurance and defines verification and validation. It describes different testing types like unit testing, integration testing, system testing, and validation testing. It also covers ISO standards for testing, SQA plans, testing goals and attributes. Finally, it discusses testing approaches, strategies for validation testing, and the goals of system testing.
Software Testing Trends to Look out for in 2022_.pdfV2Soft
The software market is rapidly expanding, and with the introduction of these new technologies and the testing and QA market is expected to increase significantly in the near future. These are a few of the most important software testing trends to watch in 2022. As a tester, you must follow these trends to reach new heights in the field of quality assurance and software testing!
The document describes strategies for testing software at different stages of development. It discusses starting with unit testing of individual components, then integration testing as components are combined, followed by system and validation testing once the full system is complete. Various testing techniques are described for traditional and object-oriented development approaches, including unit, integration, system, validation, acceptance, and regression testing.
Software Testing Strategies, General Characteristics of Strategic Testing, Verification and Validation, Organizing for Software Testing, A Strategy for Testing Conventional Software, Levels of Testing for Conventional Software, Testing Strategy applied to Conventional Software, Startegic Issues-Ensuring a Successful Software Test Strategy, Fundamentals of Software Engineering
What is Unit Testing? - A Comprehensive Guideflufftailshop
Software development involves different steps and processes, ranging from writing code and testing every function to debugging and deploying. Unit testing is an important test method used by QA teams to ensure that a software product is free of errors and meets all essential requirements.
Welingkar_final project_ppt_IMPORTANCE & NEED FOR TESTINGSachin Pathania
Software testing is an important step in the software development process to identify bugs and ensure quality. It is done at various stages including unit, integration, system, and acceptance testing. Automation testing helps test cases be run quickly and consistently. In conclusion, software testing is crucial to identify and remove errors, improving the performance and consistency of software products.
The document discusses strategies for software testing. It defines different levels of testing including unit testing, integration testing, system testing, and validation testing. It also discusses different testing approaches such as test-driven development, behavior-driven development, and agile testing. The document provides details on unit testing, integration testing, system testing, and validation testing. It discusses testing strategies, testing methods including black box testing and white box testing, and the differences between black box and white box testing.
The document discusses various topics related to software testing such as test case design strategies, levels of testing, test management, and test automation. It covers black box and white box test design approaches like boundary value analysis, equivalence partitioning, state-based testing and requirements-based testing. It also discusses different levels of testing from unit to system testing and the need for test planning, tracking, and reporting. The last unit covers test automation topics like skills required, challenges, and metrics.
The document discusses various types of testing used in object-oriented software development including requirement testing, analysis testing, design testing, code testing, integration testing, unit testing, user testing, and system testing. It provides details on each type of testing such as the purpose, techniques, and processes involved. Scenario based testing and fault based testing are also summarized in the document.
Testing is the process of executing a program with the intention of finding errors. Software testing is an analysis that gives data to estimate quality and includes executing programs to find bugs. Testing is done by software testers, developers, project leads, and end users and includes both manual and automated methods. Functional testing examines a system's functionality against requirements while non-functional testing examines reliability, efficiency and other non-functional aspects.
Testing software is important to uncover errors before delivery to customers. There are various techniques for systematically designing test cases, including white box and black box testing. White box testing involves examining the internal logic and paths of a program, while black box testing focuses on inputs and outputs without viewing internal logic. The goal of testing is to find the maximum number of errors with minimum effort.
This document discusses software testing strategies. It begins by defining software testing as executing a software system to find errors prior to delivery. It then outlines different testing approaches including unit testing, integration testing, validation testing, and system testing. Unit testing focuses on exercising individual software components to detect errors. The document emphasizes that developers and independent test groups must work together throughout a project to ensure thorough testing. It provides examples of what unit testing should evaluate like module interfaces and data integrity. The overall strategies aim to verify proper integration and that requirements are met across the full system.
The document discusses different strategies for software testing. It describes unit testing starting at the component level and progressing outward to integration, validation, and system testing. Validation testing ensures requirements are met through criteria like functional testing and alpha/beta testing with end users. Verification tests that the product is built correctly while validation ensures the correct product is built.
This document provides an introduction to software testing. It discusses characteristics of software testing such as conducting formal technical reviews and using different testing techniques at different stages. It also discusses verification and validation, with verification ensuring correct implementation and validation ensuring traceability to requirements. Various software quality assurance activities are listed. The document then discusses specific testing strategies like unit testing, integration testing, regression testing, smoke testing, validation testing, and performance testing. It describes the debugging process and different debugging approaches like brute force, backtracking, and cause elimination. Debugging tools can supplement these approaches.
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1. Department of Computer Science and Applications
The Gandhigram Rural Institute – Deemed to be
University
India.
kkgruugpg@gmail.com
Dr.S.Karthigai Selvi
2. 4.1.Strategy
2
A strategy for software testing provides a road map that
describes the steps to be conducted as part of testing,
when these steps are planned and then
undertaken, and how much effort, time, and resources
will be required.
Testing strategy must incorporate
test planning,
test case design,
test execution, and
resultant data collection and evaluation.
3. 4.1.1.A STRATEGIC APPROACH
TO SOFTWARE TESTING
Testing is a set of activities that can be planned in
advance and conducted systematically.
Characteristics of a Software Testing
For effective testing, conduct effective technical reviews - many
errors will be eliminated before testing commences.
Testing begins at the component level and works “outward”
toward the integration of the entire computer-based system.
Different testing techniques are appropriate for different software
engineering approaches and at different points in time.
Testing is conducted by the developer of the software and (for
large projects) an independent test group.
Testing and debugging are different activities, but debugging
must be accommodated in any testing strategy.
3
4. 4.1.2.Verification and Validation
Verification refers to the set of tasks that
ensure that software correctly implements a
specific function.
Validation refers to a different set of tasks
that ensure that the software that has been
built is traceable to customer requirements.
4
Verification: “Are we building the product right?”
Validation: “Are we building the right product?”
5. Verification and
validation includes a
wide array of SQA
activities:
technical reviews,
quality and
configuration audits,
performance
monitoring,
simulation,
Feasibility study,
documentation review,
database review,
algorithm analysis,
Development testing,
usability testing,
qualification testing,
acceptance testing,
and
installation testing.
5
6. Output of Testing
The above are confirmed during testing.
6
1
• Proper application of methods and
tools
2
• effective technical reviews
3
• solid management
4
• measurement all lead to quality
7. 4.1.3. Organizing for Software
Testing
Who test the s/w?
Software engineer who build the software
If mistakes made by him...
1) that the developer of software should do no
testing at all,
2) that the software should be “tossed over the
wall” to strangers who will test it mercilessly,
3) that testers get involved with the project only
when the testing steps are about to begin.
7
8. The software developer is always responsible
for testing the individual units (components) of
the program, some times integration testing.
Independent Test Group (ITG) is to remove the
inherent problems associated with letting the
builder test the thing that has been built.
Role of ITG
work closely throughout a software project to
ensure that thorough tests will be conducted.
involved during analysis and design and stays
involved throughout a large project.
ITG reports to the software quality assurance
organization
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9. 4.1.4. Software Testing Strategy
software requirements analysis –
Function, function, behavior,
performance, constraints, and
validation criteria for software are
established.
Unit testing – each unit of the s/w
(source code)
integration testing - design and the
construction of the software
architecture
Validation testing- validated against
the constructed software
System testing - the software and
other system elements are tested as
a whole
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10. Procedural point of view, testing within the context of software
engineering is actually a series of four steps that are implemented
sequentially.
Unit testing - specific paths in a component’s control structure to
ensure complete coverage and maximum error detection.
Integration testing – Specific program paths, transfer of inputs and
outputs and coverage of control paths.
Validation testing provides final assurance that software meets all
informational, functional, behavioral, and performance requirements.
10
11. high-order testing step falls outside the
boundary of software engineering and into
the broader context of computer system
engineering
System testing verifies that all elements
mesh properly and that overall system
function/performance is achieved
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