Software Engineering Tutorials

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Software Engineering Tutorials

1. If an input condition specifies a range, one valid and two invalid equivalence classes are defined. 2. If an input condition requires a specific value, then one valid and two invalid equivalence classes are defined. 3. If an input condition specifies a member of a set, then one valid and one invalid equivalence class are defined. 4. If an input condition is boolean, then one valid and one invalid equivalence class are
defined. Boundary Value Analysis This method leads to a selection of test cases that exercise boundary values. It complements
equivalence partitioning since it selects test cases at the edges of a class. Rather than focusing on
input conditions solely, BVA derives test cases from the output domain also. BVA guidelines
include: 1. For input ranges bounded by a and b, test cases should include values a and b and just above and just below a and b respectively. 2. If an input condition specifies a number of values, test cases should be developed to exercise the minimum and maximum numbers and values just above and below these
limits. 3. Apply guidelines 1 and 2 to the output. 4. If internal data structures have prescribed boundaries, a test case should be designed to
exercise the data structure at its boundary. Cause-Effect Graphing Techniques Cause-effect graphing is a technique that provides a concise representation of logical conditions and corresponding actions. There are four steps: 1. Causes (input conditions) and effects (actions) are listed for a module and an identifier is assigned to each. 2. A cause-effect graph is developed. 3. The graph is converted to a decision table. 4. Decision table rules are converted to test cases. 1. Normalization 2. All normal forms 3. How to normalize many to many relation 4. What is a procedure Give one example?