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Usability
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Table 111 Common Types of Testing (continued)
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Type of Testing Stress Objective(s) Chief Champion Benefits from Automation High
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Technical architects Push the limits of the architecture to test that it can support the maximum data volume, throughput, and response time requirements of the users Stress testing is often based on key transactions that the solution must support under extreme conditions Test lead Ensure that a modification has not affected some other part of the application This is a comprehensive set of tests Test the full capability of Architects & analysts the application and the infrastructure together, as opposed to in separate pieces This will identify incompatibilities at the application, software, or hardware levels Ensure that the technical architecture and system software is compatible For example, does the database version function with the version of the operating system Technology administrator
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System
Installation
Testing, Deploying, and Closing an Engagement
Table 111 Common Types of Testing (continued)
Type of Testing User Acceptance Testing (UAT) Objective(s) Chief Champion Benefits from Automation Low
Determine whether the Client users solution should be implemented, rejected, or fixed This is also referred to as acceptance testing; the client users leverage the UAT test cases to make a determination Test lead Ensure that the deployment was done correctly This set of tests is conducted after the solution is launched Test the solution as it is Team being built, to uncover problems or issues This is an opportunity to look for strange occurrences and unexpected application behavior
Postimplementation
Medium
Ad hoc
Testing Timelines and Durations
Figure 11-3 shows the relative positioning of the different testing approaches discussed in Table 11-1 Their timing and duration are key considerations in efficient use of the time that is available throughout the engagement The testing approach must start during the planning (and scoping) phase This will mobilize the team to think in terms of completion and drive important decisions, and also give them a chance to purchase and set up the equipment and technology necessary to support the testing initiatives Testers, who generally have operational responsibilities because they are borrowed from production departments, can also plan their time with more certainty because of this advance notice period
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Common testing durations
Table 11-2 provides justification for the relative positioning of the testing activities You may want to consider splitting some of the testing activities across a longer time For example, usability testing may start in the architecture/design phase, but can be conducted again in the testing phase to identify any final tweaks required by the user interface The Duration column contains a suggestion for the relative length of the test For example: short = 1 day; medium = 2 days; long = 5 days; very long = 8 days
Table 112 Testing Timelines
Type of Testing Unit Usability Positioning Conduct after a component is coded Conduct before major investments are made in coding the solution Duration Short Medium
Testing, Deploying, and Closing an Engagement
Table 112 Testing Timelines (continued)
Type of Testing Functional Integration Stress Positioning Systematically test the business functionality of the application after unit testing Start early in the process, and integrate and test components as they are being built Duration Long Very long
Medium Confirm the feasibility of the technology architecture to support the maximum rigor and extreme conditions that will need to be supported by the solution This should be done as early as possible to ensure scalability and robustness of the technical architecture This is often, erroneously, left to the end of the lifecycle on most engagements Confirm that modified code has not caused bugs Medium in other parts of the tested application This is especially important near the end of the testing phase and to support modifications after a system is in production Perform as part of the testing phase Conduct following every technology implementation to ensure that the software and hardware interfaces are operating Medium Short
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