Rss-Bridge/tests/BridgeImplementationTest.php

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<?php
use PHPUnit\Framework\TestCase;
use PHPUnit\Framework\TestResult;
use PHPUnit\Framework\AssertionFailedError;
require_once('Bridge.php');
require_once('BridgeAbstract.php');
require_once('FeedExpander.php');
Bridge::setDir(__DIR__ . '/../bridges/');
/**
* This class checks bridges for implementation details:
*
* - A bridge must not implement public functions other than the ones specified
* by the bridge interfaces. Custom functions must be defined in private or
* protected scope.
* - getName() must return a valid string (non-empty)
* - getURI() must return a valid URI
* - A bridge must define constants for NAME, URI, DESCRIPTION and MAINTAINER,
* CACHE_TIMEOUT and PARAMETERS are optional
*/
final class BridgeImplementationTest extends TestCase {
private function CheckBridgePublicFunctions($bridgeName){
$parent_methods = array();
if(in_array('BridgeInterface', class_parents($bridgeName))) {
$parent_methods = array_merge($parent_methods, get_class_methods('BridgeInterface'));
}
if(in_array('BridgeAbstract', class_parents($bridgeName))) {
$parent_methods = array_merge($parent_methods, get_class_methods('BridgeAbstract'));
}
if(in_array('FeedExpander', class_parents($bridgeName))) {
$parent_methods = array_merge($parent_methods, get_class_methods('FeedExpander'));
}
// Receive all non abstract methods
$methods = array_diff(get_class_methods($bridgeName), $parent_methods);
$method_names = implode(', ', $methods);
$errmsg = $bridgeName
. ' implements additional public method(s): '
. $method_names
. '! Custom functions must be defined in private or protected scope!';
$this->assertEmpty($method_names, $errmsg);
}
private function CheckBridgeGetNameDefaultValue($bridgeName){
if(in_array('BridgeAbstract', class_parents($bridgeName))) { // Is bridge
if(!$this->isFunctionMemberOf($bridgeName, 'getName'))
return;
$bridge = new $bridgeName();
$abstract = new BridgeAbstractTest();
$message = $bridgeName . ': \'getName\' must return a valid name!';
$this->assertNotEmpty(trim($bridge->getName()), $message);
}
}
// Checks whether the getURI function returns empty or default values
private function CheckBridgeGetURIDefaultValue($bridgeName){
if(in_array('BridgeAbstract', class_parents($bridgeName))) { // Is bridge
if(!$this->isFunctionMemberOf($bridgeName, 'getURI'))
return;
$bridge = new $bridgeName();
$abstract = new BridgeAbstractTest();
$message = $bridgeName . ': \'getURI\' must return a valid URI!';
$this->assertNotEmpty(trim($bridge->getURI()), $message);
}
}
private function CheckBridgePublicConstants($bridgeName){
// Assertion only works for BridgeAbstract!
if(in_array('BridgeAbstract', class_parents($bridgeName))) {
$ref = new ReflectionClass($bridgeName);
$constants = $ref->getConstants();
$ref = new ReflectionClass('BridgeAbstract');
$parent_constants = $ref->getConstants();
foreach($parent_constants as $key => $value) {
$this->assertArrayHasKey($key, $constants, 'Constant ' . $key . ' missing in ' . $bridgeName);
// Skip optional constants
if($key !== 'PARAMETERS' && $key !== 'CACHE_TIMEOUT') {
$this->assertNotEquals($value, $constants[$key], 'Constant ' . $key . ' missing in ' . $bridgeName);
}
}
}
}
private function isFunctionMemberOf($bridgeName, $functionName){
$bridgeReflector = new ReflectionClass($bridgeName);
$bridgeMethods = $bridgeReflector->GetMethods();
$bridgeHasMethod = false;
foreach($bridgeMethods as $method) {
if($method->name === $functionName && $method->class === $bridgeReflector->name) {
return true;
}
}
return false;
}
public function testBridgeImplementation($bridgeName){
require_once('bridges/' . $bridgeName . '.php');
$this->CheckBridgePublicFunctions($bridgeName);
$this->CheckBridgePublicConstants($bridgeName);
$this->CheckBridgeGetNameDefaultValue($bridgeName);
$this->CheckBridgeGetURIDefaultValue($bridgeName);
}
public function count() {
return count(Bridge::listBridges());
}
public function run(TestResult $result = null) {
if ($result === null) {
$result = new TestResult;
}
foreach (Bridge::listBridges() as $bridge) {
$bridge .= 'Bridge';
$result->startTest($this);
PHP_Timer::start();
$stopTime = null;
try {
$this->testBridgeImplementation($bridge);
} catch (AssertionFailedError $e) {
$stopTime = PHP_Timer::stop();
$result->addFailure($this, $e, $stopTime);
} catch (Exception $e) {
$stopTime = PHP_Timer::stop();
$result->addError($this, $e, $stopTime);
}
if ($stopTime === null) {
$stopTime = PHP_Timer::stop();
}
$result->endTest($this, $stopTime);
}
return $result;
}
}
class BridgeAbstractTest extends BridgeAbstract {
public function collectData(){}
}