CIS841

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CIS841 Verification and Validation

• Dr David A. Gustafson
• dag_at_cis.ksu.edu
• http//www.cis.ksu.edu/dag

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Goals

• Prepare students to be software testers and
  researchers in software testing. In particular,
  students should understand the current state of
  the art in software testing, be able to read and
  evaluate current literature in software testing,
  and be able to plan an effective testing effort.

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Specific Goals of CIS841

• understanding of software faults, failures,
  errors, and testing
• knowledge of state-of-the-practice and
  state-of-the-art (current articles)
• understanding of issues, terminology,
  foundations, and techniques
• learning to read the literature

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Conduct of Course

• TU 930-1045 am
• Discussions/Lectures
• Homework
• Exams
• Read Syllabus
• Read announcements

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Crib sheets

• For each exam, I will allow each student to bring
  in one (or more on the final) 8.5 by 11 sheets of
  paper, hand-written, both sides.
• The development and writing of the crib sheet
  must be your own work. Do not show your
  cribsheet to others. Do not use someone elses
  cribsheet. Cribsheets that share too much to be
  original will be turned in the honor system.
• The crib sheet(s) will be turned in with the
  exam.

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Off Campus

• Unless noted, due dates for off-campus students
  are the same as for on-campus students contact
  me if this is a problem
• For in class work, email as soon as possible but
  definitely before next class (on-campus)
• Including todays work
• Turn in proctor information as soon as possible

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Active Learning

• TTYP
• Venn Diagrams
• Classification
• Definitions
• 1 minute paper
• Meta-cognition

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Exams cover

• Lectures and Discussions
• Homework
• Articles and Readings
• PreLecture Quizzes

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Think not regurgitate

• Quotes are someone elses thoughts, not your
  thoughts. When I see a quote on a students
  paper or exam, I am not sure if the student
  understood what was said in a quote.
• Any quote must be acknowledged as a quote(e.g.
  ), referenced and explained.

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Grading

• two midterms (100-150 pts)
• one final (200 pts)
• Prelecture quiz (4-10 pts)
• homework (10-20 pts)
• due beginning of class (10 off)
• 6 main tasks (30-100 pts)
• Final paper (100 pts)
• 90 of total points is an A, 80 is a B

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Grade Information

• will be available on kstate online
• Online.ksu.edu

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Availability of Lectures

• world wide web
• Powerpoint
• Pre
• Post
• Tegrity video
• Link from class web page below my webpage
• www.cis.ksu.edu/dag

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Articles

• current information
• sometimes unproven
• different viewpoints
• different styles, terminology, levels
• little background information

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How do you read an article?

• My approach
• Read abstract
• Check refs
• Read conclusions
• Only then, read paper

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Program X
int x, y char out cin gtgt x gtgt y out
A if (x lt y) out B if(x gt 10) out
C if (y lt 40) out D coutltlt out
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TTYP1

• Def Subdomain an area (subset) of the input
  domain such that all points in that subset are
  treated identically by the program.
• Draw the x-y space (input domain) and find the
  subdomains. Label each subdomain with the
  output value returned.

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Program Xfault1
int x, y char out cin gtgt x gtgt y out
A if (x lt y) out B if(x gt 10) out
C if (y lt 40) out D coutltlt out
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TTYP2

• Def failure set a subset of the input domain
  that displays the failure. That is, the external
  behavior of the program is different (incorrect)
  on points in that subset
• Draw the failure set on the diagram of the x-y
  space.

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For Thursday, Aug 23

• Write a correct program in C that has two
  numeric inputs, and a deterministic output. E.g.
  area
• Find 1) a fault that would be very easy to find,
  and 2) a fault that would be very hard to find.
  Estimate the number of the inputs that show each
  fault.
• (a fault would be a change to something in the
  correct version that would make it produce the
  wrong output for some inputs)

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1 minute paper

• What questions about testing would you like to
  answer? Or be answered?