first public TDD in Kaunas!!!

Test.php

<?php
class Test extends PHPUnit_Framework_TestCase {

    /**
     * @var Calc
     */
    private $calc;
    protected  function setUp() {
        $this->calc = new Calc();
    }

    public function test_sums_2_numbers()
    {
        $this->assertSame(2, $this->calc->calculate('1 + 1'));
    }

    public function test_makes_minus_on_2_numbers()
    {
        $this->assertSame(1, $this->calc->calculate('2 - 1'));
    }

    public function test_calc_can_multiply()
    {
        $this->assertSame(6, $this->calc->calculate('2 * 3'));
    }

    public function test_multiple_operands()
    {
        $this->assertSame(2, $this->calc->calculate('2 + 2 - 2'));
    }

    public function test_operator_position()
    {
        $this->assertSame(6, $this->calc->calculate('2 + 2 * 2'));
    }
}














class Calc
{
    public function calculate($string)
    {
        $elements = explode(' ', $string);

        return $this->parseArray($elements);
    }

    protected function parseArray($elements)
    {
        if (count($elements) == 1) {
            return array_pop($elements);
        }
        $left = array_shift($elements);
        $operand = array_shift($elements);

        switch($operand) {
            case '+':
                return $left + $this->parseArray($elements);
            case '-':
                return $left - $this->parseArray($elements);
            case '*':
                return $left * $this->parseArray($elements);
        }
    }

}

Ačiū už pamoką

Mano variantas: https://gist.github.com/darles/c8065784747909e33437

Mano variantas: https://gist.github.com/vzailskas/e77ce993438d6ebf631c

w00t su node.js: https://gist.github.com/anonymous/8027618

testai: https://gist.github.com/aurimasdgt/3b91f35cf5af40822eec

https://gist.github.com/dardarlt/2e5f4c1ccc482fa2d7b4

EVAL EVERYTHING !!!