<?php
// testCtoF.php        test script for CtoF() function
// P. Conrad for CISC103, sect 99, 11/20/2007


   require("CtoF.php");


  //=======================================
  // define the tolerance 
  //=======================================
  
  // tolerance is "how far away from the expected value" the result
  // is allowed to be.  Since this calculation involves only simple
  // arithmetic, we can have a very small tolerance (i.e. expect a 
  // very accurate answer

  $tolerance = 0.00001;

  //===================
  //  Run the tests 
  //=================== 

  //  Test 1

  $expected = 68;
  $actual = CtoF(20);    // convert 20 degrees Celsius to Fahrenheit
  $diff = abs(expected-actual);

  if ($diff < $tolerance) 
    {
      print("test 1 passed\n");
    }
  else 
    {
      print("test 1 failed\n");
      print("expected=" . $expected . "\n");
      print("actual=" . $actual . "\n");
    }

  //  Test 2

  $expected = 86;
  $actual = CtoF(30); // convert 30 degrees Celsius to Fahrenheit
  $diff = abs($expected-$actual);

  if ($diff < $tolerance) 
    {
      print("test 2 passed\n");
    }
  else 
    {
      print("test 2 failed\n");
      print("expected=" . $expected . "\n");
      print("actual=" . $actual . "\n");
    }

?>