Polish Calculator Unit tests

polishcalculator_test.php

<?php
/**
 * First, download phpunit.phar from www.phpunit.de
 * Navigate to PHP bin folder and enter following command to execute tests:
 *
 * php.exe phpunit.phar --bootstrap c:\wamp\www\unit\src\polishcal\polishcalculator.php c:\wamp\www\unit\tests\polishcal_test\polishcalculator_test.php
 *
 */
class polishcalculatorTest extends PHPunit_Framework_Testcase {

    /*
     * Testing the addition function
     */
	private $expected ;
	private $postfixstring ;
	
    public function testAdd() {
	
        //include('../my_functions.php'); // must include if tests are for non OOP code
        $this->expected = 7 ;
		$this->postfixstring = "3 4 +";
		
		$polishtestObj = new polishcalculator($this->postfixstring);
		
		$result = $polishtestObj->evaluate();
        $this->assertEquals($this->expected, $result);
    }
	
	public function testSubstract() {
	
        //include('../my_functions.php'); // must include if tests are for non OOP code
        $this->expected = -7 ;
		$this->postfixstring = "3 10 -";
		
		$polishtestObj = new polishcalculator($this->postfixstring);
		
		$result = $polishtestObj->evaluate();
        $this->assertEquals($this->expected, $result);
    }
	
	public function testMultiply() {
	
        //include('../my_functions.php'); // must include if tests are for non OOP code
        $this->expected = 14;
		$this->postfixstring = "7 2 *";
		
		$polishtestObj = new polishcalculator($this->postfixstring);
		
		$result = $polishtestObj->evaluate();
        $this->assertEquals($this->expected, $result);
    }
	
	public function testDivide() {
        //include('../my_functions.php'); // must include if tests are for non OOP code
        $this->expected = 5 ;
		$this->postfixstring = "10 2 /";
		
		$polishtestObj = new polishcalculator($this->postfixstring);
		
		$result = $polishtestObj->evaluate();
        $this->assertEquals($this->expected, $result);
    }
	
	public function testPercent() {
        //include('../my_functions.php'); // must include if tests are for non OOP code
        $this->expected = 1;
		$this->postfixstring = "50 % 2 *";
		
		$polishtestObj = new polishcalculator($this->postfixstring);
		
		$result = $polishtestObj->evaluate();
        $this->assertEquals($this->expected, $result);
    }
	
	public function testLongExpr1() {
        //include('../my_functions.php'); // must include if tests are for non OOP code
        $this->expected = 4;
		$this->postfixstring = "6 2 * 3 /";
		
		$polishtestObj = new polishcalculator($this->postfixstring);
		
		$result = $polishtestObj->evaluate();
        $this->assertEquals($this->expected, $result);
    }
	
	public function testLongExpr2() {
        //include('../my_functions.php'); // must include if tests are for non OOP code
        $this->expected = 17 ;
		$this->postfixstring = "2 3 ^ 4 5 + +";
		
		$polishtestObj = new polishcalculator($this->postfixstring);
		
		$result = $polishtestObj->evaluate();
        $this->assertEquals($this->expected, $result);
    }
	
	public function testLongExpr3() {
        //include('../my_functions.php'); // must include if tests are for non OOP code
        $this->expected = 14 ;
		$this->postfixstring = "5 1 2 + 4 * + 3 -";
		
		$polishtestObj = new polishcalculator($this->postfixstring);
		
		$result = $polishtestObj->evaluate();
        $this->assertEquals($this->expected, $result);
    }
	
	public function testEmptyStringShouldMatchToZero() {
        //include('../my_functions.php'); // must include if tests are for non OOP code
        $this->expected = 0 ;
		$this->postfixstring = "";
		
		$polishtestObj = new polishcalculator($this->postfixstring);
		
		$result = $polishtestObj->evaluate();
        $this->assertEquals($this->expected, $result);
    }
	
	// Failings tests
	public function testFailing1() {
        //include('../my_functions.php'); // must include if tests are for non OOP code
        $this->expected = 6 ;
		$this->postfixstring = "10 2 /";
		
		$polishtestObj = new polishcalculator($this->postfixstring);
		
		$result = $polishtestObj->evaluate();
        $this->assertEquals($this->expected, $result);
    }
	
	public function testFailing2() {
        //include('../my_functions.php'); // must include if tests are for non OOP code
        $this->expected = 7;
		$this->postfixstring = "50 % 2 *";
		
		$polishtestObj = new polishcalculator($this->postfixstring);
		
		$result = $polishtestObj->evaluate();
        $this->assertEquals($this->expected, $result);
    }
}
?>