Effective Methods of Software Testing Workshop

Overview Testing is our main means of reducing software risk and typically takes half of software projects, yet still fails to catch many important defects. Traditional testing books and training emphasize using well-known test design techniques, including boundary tests and decision trees/tables, which indeed can help detect more defects; but their value is limited by testing too late and largely reacting to what’s specified in the system design. _ This interactive course shows how to use these techniques, along with additional little-known but more powerful Proactive Testing™ low-busywork methods that spot and can prevent many of the highest yet ordinarily-overlooked showstopper and other risks earlier when they are easier and cheaper to fix. You’ll be able to deliver better software in less time by more effectively making sure the most important unit/component, integration/assembly, system, and UAT testing is done in limited available time, while also providing the value that overcomes traditional user, manager, and developer resistance. _ To enhance learning, participants practice each key technique in a series of exercises with various aspects of a real case fact situation. Participants will learn * A structured Proactive Testing model of testing that should be performed throughout the life cycle. * Ways testing actually can cut time, effort, and aggravation for users, developers, and managers. * Writing industry-accepted test plans, designs, and cases that make testing easier and more reliable. * Multiple techniques/checklists to design more thorough tests and discover overlooked conditions. * Managing test execution, including estimating/allocating resources and reporting defects and status. * Applying risk analysis and reusable testware to perform more of the important testing in less time. WHO SHOULD ATTEND This course has been designed for testing professionals and others who manage and perform testing of software products, and also for analysts, designers, and system/project managers who need to know how Proactive Testing™ can cut software development time and effort. Course Outline HOW TESTING CAN CUT EFFORT & TIME Testing for correctness vs. testing for errors Developer views of testing Exercise: Your defined testing process What is a process, why it matters REAL vs. presumed processes Why most IT process improvement efforts fail Exercise: Your REAL testing process Meaningful process measures, results, causes Defect injection, detection, ejection metrics Economics of quality problems in life cycle Keys to effective testing CAT-Scan Approach to find more errors Dynamic, passive and active static testing Developer vs. independent test group testing V-model and objectives of each test level Reactive testing—out of time, but not tests Proactive Testing Life Cycle model Proactive user acceptance criteria Strategy—create fewer errors, catch more Test activities that save the developer’s time Applying improvements TEST PLANNING VALUE NOT BUSYWORK Why test planning often is resisted Buzzword boilerplate platitudes paperwork Test plans as the set of test cases Six reasons to plan testing Risk elements, relation to testing Traditional reactive risk analysis, issues IEEE Standard for Test Documentation Overcoming controversial interpretations Testing structure’s advantages Enabling manageability, reuse, selectivity Test plans, designs, cases, procedures PROACTIVE MASTER TEST PLANNING (BIG RISKS) Exercise: Anticipating showstoppers Spotting overlooked large risks Involving key stakeholders, reviewing plans Formal and informal risk prioritization Dynamic identification of design defects Risk-based way to define test units Letting testing drive development Preventing major cause of overruns Stomach ache metric Testing highest risks more and earlier, builds Master Test Plan counterpart to project plan Strategy approach, use of automated tools Sequence of tests, sources of data Entry/exit criteria, anticipating change Test environment, supporting materials Estimating testing, avoiding traps Roles, responsibilities, staffing, training Schedule, risks and contingencies, sign-offs Management document, agreements Maintaining the living document DETAILED TEST PLANNING (MEDIUM-SIZED RISKS) IEEE Standard on Unit Testing Requirements-based functional testing Non-functional requirements challenges Black Box testing strategy 3-level top-down test planning and design Detailed Test Plans for large risks Exercise: Functionality matrix Test designs for medium-sized risks Use cases, revealing overlooked conditions Detailed Test Plan technical document WHITE BOX (STRUCTURAL) TESTING Structural (white box) degrees of coverage Flowgraphing logic paths Applying structural paths to business logic Exercise: Defining use case test coverage Flaws of conventional use-case testing Exercise: Additional use case conditions INTEGRATION/SYSTEM/SPECIAL TEST PLANNING Risks, issues integration testing addresses Graphical technique to simplify integrations Integration test plans prevent schedule slips Smoke tests, increasing their value Special tests Load, performance, stress testing Ongoing remote monitoring, reliability Security, configurations, compatibility Distribution and installation, localization Maintainability, support, documentation Usability, laboratories raising the bar TEST DESIGN: BOTH VERB AND NOUN (SMALL RISKS) Why tests need to be designed Appropriate use of exploratory testing Exercise: Disciplined brainstorming Checklists, ad hoc exploratory pros and cons Data formats, data and process models Exercise: Applying checklists Business rules, decision tables and trees Exercise: Create a decision table Equivalence classes and boundary values Exercise: Identify logical equivalence classes Formal, informal Test Design Specifications Exercise: Defining reusable test designs Complex conditions, defect isolation Test Cases for small risks Test Case Specifications vs. test data values Exercise: Writing test cases, script/matrix MAINTENANCE AND REGRESSION TESTING Maintenance vs. development, why so harder Improve attention and knowledge Regression testing, minefield effect Exercise: Testing maintenance changes AUTOMATED TESTING TOOLS Key test automation issues Tools for a managed environment Coverage analysis, execution aids Test planning, design, administering Automated test execution tools, issues Scripting approaches, action words MEASURING AND MANAGING TESTING What is a test case survey Relevance for estimating test-based tasks Traceability concepts and issues Estimating non-test-based test project tasks Defect reports that prompt suitable action Determining defect age Status reporting people pay attention to Projecting when software is good enough Defect density, reductions Defect detection/removal percentages Exercise: Measuring testing effectiveness