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DEVELOPING TESTING METHODOLOGIESBy:Indana Abhinav (109B44)
Nilava Das (109B46)
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Software Testing Software testing is an investigation conducted
to provide stakeholders with information about the quality of the
product or service under test. Software testing also provides 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.
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Why Testing?Software testing is used for validating and
verifying that a software program / application / product :-
1.Meets the business and technical requirements that guided its
design and development. 2.Works as expected. 3.Can be implemented
with the same characteristics.
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Test Strategy Test strategy defines an applicable Test Process
to achieve quality that are promised to customer.
Test Strategy changes from project to project.
If this is a master test plan, then the coverage requirements
must also be identified.
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While developing a test strategy, the following questions are
taken into account. They are :1. Are there any special tools to be
used and if yes, what are they? (The tools that are being used in
the current project must also be mentioned). 2. Will the tools
require any special training? 3. Which Software is used? (Need to
mention the software if we are using specially).
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Test Plan A document that indicates what testing will occur?,
how it will occur?, and what resources will be necessary for it to
occur? It also details how results and defect reporting will occur.
This document describes the general approach, along with the
specific methodologies and techniques used by the Quality Assurance
testing team to plan, organize and manage the testing activities
for the overall testing process.
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Developing Testing Methodologies The eight considerations listed
below provide the framework for developing testing tactics. They
are :-
1. Acquire and study the test strategy. 2. Determine the type of
development project. 3. Determine the type of software system. 4.
Determine the project scope.
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5. Identify the tactical risks. 6. Determine when testing should
occur. 7. Build the system test plan. 8. Build the unit test
plans.
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Acquire and Study the Test Strategy A team familiar with the
business risks associated with the software normally develops the
test strategy, and the test team develops the tactics. Therefore,
the test team needs to acquire and study the test strategy,
focusing on the following questions :1. What is the relationship of
importance among the test factors?
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2. Which of the high-level risks are the most significant? 3.
Who has the best understanding of the impact of the identified
business risks? 4. What damage can be done to the business if the
software fails to perform correctly? 5. What damage can be done to
the business if the software is not completed on time?
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Building System Test Plans This plan will provide background
information on the system being tested, test objectives and risks,
the business functions to be tested, and the specific tests to be
performed. The Test Plan is the road map that will be followed when
conducting the testing.
The plan is then decomposed into specific tests and lower-level
plans.
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For example, in Black Box testing, the specific tests are :-
a) Error Guessing. b) Equivalence Class. c) Cause Effect Graph
matrix. d) Boundary Value Analysis.
After execution, the results from the specific tests are rolled
up to produce a Test Report.
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Building Unit Test Plans During internal design, the system is
divided into the components or units that perform the detailed
processing.
Each of these units should have an individual Test Plan. The
plans can be as simple or as complex as the organization requires
based on its quality expectations.
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Importance of Unit Test Plans It is to determine when unit
testing will be completed. It is not cost effective to submit units
that contain defects to higher levels of testing. The extra effort
spent in developing Unit Test Plans, testing units, and assuring
that units are defect free prior to integration testing can have a
significant payback in reducing overall test costs.
Testing process Life-Cycle
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