EP & BVA Practice Assignment

This page contains a simple specification for Equivalence Partitioning and Boundary Value Analysis test design techniques, along with several different implementations of this specification. Implementation 1 is correct, others - not so much. Your goal is to find ON, OFF, OUT, IN other values that will find bugs in all of them.


  • Any integer that is greater or equal to -10,000 and less or equal to 10,000 is accepted by the program;
  • All negative integers must be stored in a database with other negative integers;
  • All positive integers must be stored in a database with other positive integers;
  • Zero should not be stored.


Implementation 1

Implementation 2

Implementation 3

Implementation 4

Implementation 5

Implementation 6

Implementation 7

Implementation 8

Implementation 9

Implementation 10

Implementation 11

Implementation 12