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E-file is still the best way to get fast refunds from IRS

Fri, 28 Jan 2011 10:58:15 +0000

E-file is still the best way to get fast refunds from IRS
The Internal Revenue Service recently opened its 21st season of electronic filing with a reminder to taxpayers that e-file remains the best way to get fast refunds and ensure accurate tax returns, particularly following several tax law changes in December.

What’s The Best Approach To Software Test Estimation?

Wed, 12 Jan 2011 03:33:43 +0000

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Home Page > Computers > Information Technology > What’s The Best Approach To Software Test Estimation?

What’s The Best Approach To Software Test Estimation?

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Posted: Feb 26, 2010 |Comments: 0
| Views: 249 |

Following are some approaches to consider:

Implicit Risk Context Approach:

A typical approach to test estimation is for a project manager or QA manager to implicitly use risk context, in combination with past personal experiences in the organization, to choose a level of resources to allocate to testing. In many organizations, the ‘risk context’ is assumed to be similar from one project to the next, so there is no explicit consideration of risk context. (Risk context might include factors such as the organization’s typical software quality levels, the software’s intended use, the experience level of developers and testers, etc.) This is essentially an intuitive guess based on experience.

Metrics-Based Approach:

A useful approach is to track past experience of an organization’s various projects and the associated test effort that worked well for projects. Once there is a set of data covering characteristics for a reasonable number of projects, then this ‘past experience’ information can be used for future test project planning. (Determining and collecting useful project metrics over time can be an extremely difficult task.) For each particular new project, the ‘expected’ required test time can be adjusted based on whatever metrics or other information is available, such as function point count, number of external system interfaces, unit testing done by developers, risk levels of the project, etc. In the end, this is essentially ‘judgement based on documented experience’, and is not easy to do successfully.

Test Work Breakdown Approach:

Another common approach is to decompose the expected testing tasks into a collection of small tasks for which estimates can, at least in theory, be made with reasonable accuracy. This of course assumes that an accurate and predictable breakdown of testing tasks and their estimated effort is feasible. In many large projects, this is not the case. For example, if a large number of bugs are being found in a project, this will add to the time required for testing, retesting, bug analysis and reporting. It will also add to the time required for development, and if development schedules and efforts do not go as planned, this will further impact testing.

Iterative Approach:

In this approach for large test efforts, an initial rough testing estimate is made. Once testing begins, a more refined estimate is made after a small percentage (eg, 1%) of the first estimate’s work is done. At this point testers have obtained additional test project knowledge and a better understanding of issues, general software quality, and risk. Test plans and schedules can be refactored if necessary and a new estimate provided. Then a yet-more-refined estimate is made after a somewhat larger percentage (eg, 2%) of the new work estimate is done. Repeat the cycle as necessary/appropriate.

Percentage-of-Development Approach:

Some organizations utilize a quick estimation method for testing based on the estimated programming effort. For example, if a project is estimated to require 1000 hours of programming effort, and the organization normally finds that a 40% ratio for testing is appropriate, then an estimate of 400 hours for testing would be used. This approach may or may not be useful depending on the project-to-project variations in risk, personnel, types of applications, levels of complexity, etc.

Successful test estimation is a challenge for most organizations, since few can accurately estimate software project development efforts, much less the testing effort of a project. It is also difficult to attempt testing estimates without first having detailed information about a project, including detailed requirements, the organization’s experience with similar projects in the past, and an understanding of what should be included in a ‘testing’ estimation for a project (functional testing? unit testing? reviews? inspections? load testing? security testing?)

With agile software development approaches, test effort estimations may be unnecessary if pure test-driven development is utilized. However, it is not uncommon to have a mix of some automated positive-type unit tests, along with some type of separate manual or automated functional testing. In general, agile-based projects by their nature will not be heavily dependent on large one-shot testing efforts, since they emphasize the construction of releasable software in very short iteration cycles. These smaller multiple test effort estimates may not be as difficult to estimate and the impact of inaccurate estimates will be less severe.

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Aman Khan -
About the Author:

I am Aman Khan, VP services and deliver 360logica software testing services.

About 360logica:

360logica software testing services (www.360logica.com):

A leader in Independent Software Testing and QA support, 360logica offers high end software QA/testing solutions to Independent Software Vendors, Software product companies, and SME’s.360logica a company propelled by a team of bright, efficient & committed individuals. we have built strong practices and cover industry verticals like financial services, telecom, healthcare, SCM, Mobile, network security, travel, E-commerce, manufacturing and retail.

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triCerat’s Profile Solution Wins Best User Experience in Citrix Challenge
triCerat Inc. is proud to announce that Profile Acceleration Technology is the winner of Best User Experience in the 2010 Citrix Ready Profile Management Video Challenge. Open to all Citrix Ready partners with profile solutions, entrants were asked to visually demonstrate how their solutions worked in the desktop virtualization and user profile management arenas.

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