<?php
/**
 * System exceptions
 */
class Assert_Exception extends Exception {}
class Php_Error_Exception extends Exception {}
/**
 * Parent class for test's classes
 */
class TestCase {
  protected function assertEq($tested, $sample, $mode = true) {
    if ($mode) {
      if ($tested !== $sample) {
        throw new Assert_Exception;
      } else {
        return true;
      }
    } else {
      return $tested === $sample;
    }
  }
}
/**
 * Tests class with public methods, names must started from 'test'
 * Constructor not tested in this version
 */
class SomeTests extends TestCase {
  public function testOne() {
    $this->assertEq(1,2);
  }
  public function testTwo() {
    $this->assertEq(1,1);
  }
  public function testThree() {
    $a[] = $a['dsd'];
  }
}
/**
 * Test engine and test-results storage
 * Return array with results or message
 */
class Test_Runner {
  private $_results = array();
  private $_ready   = false;
  private function _test_method($instance, $method_name) {
    try {
      set_error_handler(function($c,$m) {throw new Php_Error_Exception($m,$c);}, E_ALL);
      $instance->{$method_name}();
      restore_error_handler();
      return array('test' => 'Passed');
    } catch (Php_Error_Exception $e) {
      return array('test' => 'Failed on php error', 'exception' => $e);
    } catch (Assert_Exception $e) {
      return array('test' => 'Failed on assertion', 'exception' => $e);
    } catch (Exception $e) {
      return array('test' => 'Failed on unexpected exception', 'exception' => $e);
    }
  }
  public function getResults() {
    if ($this->_ready) {
      return $this->_results;
    } else {
      return 'Not ready';
    }
  }
  function __construct($instance) {
    $methods = get_class_methods($instance);
    if (!empty($methods)) {
     $filtered = array_filter($methods, function($meth) {return preg_match("/^test.*/U", $meth) ? true : false;});
      if (!empty($filtered)) {
        foreach ($filtered as $method) {
          $this->_results[$method] = $this->_test_method($instance, $method);
        }
        $this->_ready = true;
        unset($instance);
      } else {
        $this->_results = 'No valid test names';
      }
    } else {
       $this->_results = 'No methods to test';
    }
  }
}
$run = new Test_Runner(new SomeTests());
print_r($run->getResults());