Overview

• Preliminaries.
  • Admin.
  • Upcoming work.
  • Neighbors
  • Questions.
• Why test?
• Lab.

Preliminaries

Admin

• Our graders would like you to know that all the writeups should go to me, not to them. (Assignments, on the other hand, go to the graders.)
• It's a new week, it must be time for new partners!
  • This week's policy: Mixed-sex groups, as much as possible.
  • Next week's policy: Same-sex groups, similar confidence levels.
    • Expect a confidence-level survey soon.
• I sent you a grade status report this morning.
  
  • I'll try to send those weekly, probably on Sunday nights.
  • At some point, they'll include a bit of computation.
• Quizzes were definitely mixed. Don't stress out about it too much.
• A few of you are having some trouble with homework partners who don't make meetings. If a partner doesn't make a meeting, the other two should still make progress, so feel free to work on it without them.
  
  • If, when you submit an assignment, you feel that your partner has not contributed enough, let me know when you submit your assignment.
• Extra credit:
  • Convocation, Wednesday, noon, JRC 101 (Putin and Pussy Riot)
  • CS Extras, Wednesday at 4:30 in Science 3821: AppDev
  • CS Table, Friday at noon in the Day PDR: NP Completeness

Upcoming Work

• Tuesday's readings: Output in Scheme and Basic Image Procedures
• Today's writeup (due Wednesday): Exercise 2a from Testing
  • Email subject: CSC 151 Writeup 6: Testing (YOUR NAME(s) HERE)
• Homework 3 is due Tuesday night.
• Exam 1 will be distributed in class Wednesday (or maybe tomorrow).

Neighbors

See sample code (which Sam may insert)

Questions on HW3 (or whatever)

Why test?

• Evidence suggests that we don't think deeply enough about how our work might fail.
• Good programmers start to think deeply about the different kinds of inputs we might try
• Trying lots of inputs is tedious

Lab