<?php
namespace Fenom;

class FunctionsTest extends TestCase {

	const FUNCTION_ARGUMENT_CONSTANT = 1;

	public static function functionSum($of = array()) {
		return array_sum($of);
	}

	public static function functionPow($a, $n = 2) {
		return pow($a, $n);
	}

	public static function functionInc($a, $i = self::FUNCTION_ARGUMENT_CONSTANT) {
		return $a + $i;
	}

	public function setUp() {
        parent::setUp();
		$this->fenom->addFunctionSmart('sum', __CLASS__ . '::functionSum');
		$this->fenom->addFunctionSmart('pow', __CLASS__ . '::functionPow');
		$this->fenom->addFunctionSmart('inc', __CLASS__ . '::functionInc');

        $this->tpl('function_params_scalar.tpl', 				'{pow a=2 n=3}');
        $this->tpl('function_params_dynamic.tpl', 				'{pow a=$a n=$n}');
        $this->tpl('function_default_param_scalar.tpl', 		'{pow a=2}');
        $this->tpl('function_default_param_empty_array.tpl', 	'{sum}');
        $this->tpl('function_default_param_const.tpl', 			'{inc a=1}');
        $this->tpl('function_array_param.tpl',					'{sum of=[1, 2, 3, 4, 5]}');
    }

    public function testFunctionWithParams() {
        $output = $this->fenom->fetch('function_params_scalar.tpl');
		$this->assertEquals('8', $output);
    }

	public function testFunctionWithDynamicParams() {
        $output = $this->fenom->fetch('function_params_dynamic.tpl', array('a' => 3, 'n' => 4));
		$this->assertEquals('81', $output);
    }

	public function testFunctionWithDefaultParamScalar() {
		$output = $this->fenom->fetch('function_default_param_scalar.tpl');
		$this->assertEquals('4', $output);
	}

	public function testFunctionWithDefaultParamArray() {
		$output = $this->fenom->fetch('function_default_param_empty_array.tpl');
		$this->assertEquals('0', $output);
	}

	public function testFunctionWithDefaultParamConst() {
		$output = $this->fenom->fetch('function_default_param_const.tpl');
		$this->assertEquals('2', $output);
	}

	public function testFunctionWithArrayParam() {
		$output = $this->fenom->fetch('function_array_param.tpl');
		$this->assertEquals('15', $output);
	}

}