Regression tests are used to ensure that changes made to software have had no unintended side effects. The section s of the Software Test Plan focused on regression testing addresses the following:.
Test classes describe the grouping of tests that will be performed throughout the various types of testing. When developing the Software Test Plan, consider:. General test conditions are conditions that apply to all of the planned tests or to a specific group of tests. When documenting general test conditions, consider statements and conditions, such as these taken from Langley Research Center's NPR Test progression addresses the sequence or ordering of tests. The Software Test Plan describes dependencies among tests that require that tests be performed in a particular order.
Consider "manual, automatic, and semi-automatic techniques for recording test results, manipulating the raw results into a form suitable for evaluation, and retaining the results of data reduction and analysis. Test coverage breadth and depth or other methods for ensuring sufficiency of testing.
If not addressed elsewhere in the Software Test Plan, a description of the methods to be used for ensuring sufficient test coverage are provided. Methods could include:. If not already included in sections of the plan focused on specific types of testing unit, integration, etc. Each item needs to have its own unique identifier to ensure proper execution and tracking of the planned tests.
Consider the following information as information to capture for each test:. Previous history, either of the development team or similar projects, can help determine how long testing will take. Some methods such as error seeding and Halstead's defect metric exist for estimating defect density number of defects per unit of code when historical information is not available.
One of the key purposes of testing is to confirm that the requirements for the project have been met. The Software Test Plan includes a traceability matrix that maps tests to software requirements. If the matrix already exists, the test plan includes a reference to the matrix. Qualification testing environment, site, personnel, and participating organizations. In addition to the information required above, test plans address the following information for all types of testing:.
If not identified elsewhere, the Software Test Plan identifies the metrics to be collected for each type of testing. Suggested metrics include:.
Use the right Sources of Information first column in table below as appropriate for the project and for each type of testing, such as:. Additional guidance related to software testing may be found in the following requirements in this Handbook:. Software Test Plans are necessary for all software projects, but for projects with small budgets or small teams starting with an existing test plan from a project of a similar type and size could help reduce the time and effort required to produce a test plan for a new project.
Working with someone experienced in writing test plans, perhaps from another project and on a short-term basis, could help the project team prepare the document in a timely fashion without overburdening team resources. Where applicable, the test plan could reference other project documents rather than reproduce their contents, avoiding duplication of effort and reducing maintenance activities.
Since the Software Test Plan may be standalone or part of the Software Management Plan, incorporating the test plan into a larger project document may be useful for document tracking, review, etc. This tailoring could reduce the size of the Software Test Plan and, therefore, the time and effort to produce and maintain it. Click here to view master references table. The purpose is to provide examples of tools being used across the Agency and to help projects and centers decide what tools to consider.
Return to Software Engineering Community of Practice. Introduction B. Institutional Requirements C. Project Software Requirements D. Buede, D. Department of Defense. Gold-Bernstein, B. Enterprise integration: The essential guide to integration solutions. Hitchins, D. Jackson, S. Reason, J. Managing the Risks of Organizational Accidents. System Integration. Categories : Part 3 Topic System Realization.
Navigation menu Personal tools Log in. Namespaces Page Discussion. What links here Related changes Special pages Permanent link Page information. Also known as big-bang integration ; all the delivered implemented elements are assembled in only one step.
This technique is simple and does not require simulating the implemented elements not being available at that time. Difficult to detect and localize faults; interface faults are detected late.
Should be reserved for simple systems, with few interactions and few implemented elements without technological risks. The delivered implemented elements are assembled as they become available. Allows starting the integration quickly. Complex to implement because of the necessity to simulate the implemented elements not yet available.
Impossible to control the end-to-end "functional chains"; consequently, global tests are postponed very late in the schedule. Should be reserved for well-known and controlled systems without technological risks. In a predefined order, either one or a very few implemented elements are added to an already integrated increment of implemented elements.
Fast localization of faults: a new fault is usually localized in lately integrated implemented elements or dependent of a faulty interface. Require simulators for absent implemented elements. Require many test cases, as each implemented element addition requires the verification of the new configuration and regression testing. Applicable to any type of architecture. Implemented elements are assembled by subsets, and then subsets are assembled together a subset is an aggregate ; could also be called "functional chains integration".
Time saving due to parallel integration of subsets; delivery of partial products is possible. Requires less means and fewer test cases than integration by increments. Subsets shall be defined during the design. Applicable to architectures composed of sub-systems. Implemented elements or aggregates are integrated in their activation or utilization order. Availability of a skeleton and early detection of architectural faults, definition of test cases close to reality, and the re-use of test data sets possible.
Mainly used in software domain. Start from the implemented element of higher level; implemented elements of lower level are added until leaf-implemented elements. Implemented elements or aggregates are integrated in the opposite order of their activation or utilization.
Easy definition of test cases; early detection of faults usually localized in the leaf-implemented elements ; reduce the number of simulators to be used. An aggregate can be a sub-system. Test cases shall be redefined for each step, drivers are difficult to define and realize, implemented elements of lower levels are "over-tested", and does not allow architectural faults to be quickly detected.
Mainly used in software domain, but can be used in any kind of system. The most critical implemented elements compared to the selected criterion are first integrated dependability, complexity, technological innovation, etc. Criteria are generally related to risks. Specify necessary and desired properties of the test environment: physical characteristics of the facilities including hardware, communications, and system software, the mode of usage i.
Identify groups responsible for managing, designing, preparing, executing, witnessing, checking and resolving Identify groups responsible for providing the test items identified in the Test Items section Identify groups responsible for providing the environmental needs identified in the Environmental Needs section.
Specify staffing needs by skill level Identify training options for providing necessary skills. Specify test milestones Specify all item transmittal events Estimate the time required to do each testing task Schedule all testing tasks and test milestones For each testing resource, specify its periods of use.
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