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Object-oriented Programming in C#
Test of Object-oriented Programs
Example of Equivalence Partitioning (1)

  // Exchange element i and j in table
  public void SwapElements<T>(T[] table, int i, int j){

The method signature SwapElements.

  • Equivalence partitions - all combinations of

    • table

      • table is empty, table is singular, table with two or more elements

    • i and j

      • One of i and j are outside the bounds of table

        • i inside and j outside, i outside and j inside, both are outside

      • Both i and j are inside the bounds of table

        • i < j, i > j, i = j

Use of a stronger precondition limits the number of test cases