public function testSimpleEngine()
{
$this->expectOutputString(implode(PHP_EOL, ['Rule 1 (Red Products) triggered for Red Bricks.', 'Rule 5 (Toys) triggered for Red Bricks.', 'Rule 3 (Green Socks) triggered for Green Soft Socks.', 'Rule 4 (Socks) triggered for Green Soft Socks.', 'Rule 6 (Clothes) triggered for Green Soft Socks.', 'Rule 4 (Socks) triggered for Yellow Sporty Socks.', 'Rule 6 (Clothes) triggered for Yellow Sporty Socks.', 'Rule 5 (Toys) triggered for Lego Blocks.', 'Rule 6 (Clothes) triggered for Black Adidas Jacket.']) . PHP_EOL);
$exceptions = new Exception\ExceptionCollectorHandler();
$engine = new Engine($exceptions);
$action = new Action\PrintAction();
foreach ($this->getProducts() as $product) {
$context = new Context\ProductContext($product);
$engine->execute($context, $this->getRules(), $action);
}
$this->assertSame('', implode(PHP_EOL, $exceptions->getExceptions()), 'RuleEngine should not generate errors.');
}
public function testRuleEngineSometimesFaultyAction()
{
$productData = ['Product 1' => [], 'Product 2' => [], 'Product 3' => []];
$rules = [new GenericRule(1, 'Always triggered', 'true')];
$expectedRules = ['Product 1' => ['Always triggered'], 'Product 2' => [], 'Product 3' => ['Always triggered']];
$expectedExceptions = ['Exception encountered while executing action ' . CallbackAction::class . ' for rule 1 (Always triggered) within ' . DynamicContext::class . ': Exception thrown for Product 2.'];
$matchingRules = array_fill_keys(array_keys($productData), []);
$exceptionHandler = new Exception\ExceptionCollectorHandler();
$engine = new Engine($exceptionHandler);
foreach ($productData as $productName => $productValues) {
$action = new CallbackAction(function ($eval, $context, RuleInterface $rule) use($productName, &$matchingRules) {
if ($productName == 'Product 2') {
throw new \Exception("Exception thrown for {$productName}.");
}
$matchingRules[$productName][] = $rule->getName();
});
$engine->execute($this->getContext($productValues), $rules, $action);
}
$this->assertEquals($expectedRules, $matchingRules);
$errorMesgs = array_map(function (\Exception $exception) {
return $exception->getMessage();
}, $exceptionHandler->getExceptions());
$this->assertEquals($expectedExceptions, $errorMesgs, 'Engine exceptions were not as expected.');
}
// Provide code compiled from rule conditions
$output_generated = '';
$eval = new Rune\Util\SymfonyEvaluator();
$maxLength = 0;
foreach ($rules as $rule) {
$maxLength = max($maxLength, strlen($rule->getName()));
}
foreach ($rules as $rule) {
try {
$eval->setFunctions($descriptor->getFunctions());
$eval->setVariables($descriptor->getVariables());
$code = $eval->compile($rule->getCondition());
} catch (\Exception $ex) {
$code = 'Compile Error (' . get_class($ex) . '): ' . $ex->getMessage();
}
$output_generated .= str_pad($rule->getName(), $maxLength) . ' => ' . $code . PHP_EOL;
}
// Provide triggered rules and any generated errors
ob_start();
foreach ($products as $product) {
$context = new Context\ProductContext($product);
$engine->execute($context, $rules, $action);
}
$output_result = htmlspecialchars(ob_get_clean(), ENT_QUOTES);
$output_errors = implode(PHP_EOL, $exceptionHandler->getExceptions());
// Provide some details use for dynamic editor
$json_tokens = json_encode(['constants' => [['name' => 'true', 'type' => 'boolean'], ['name' => 'false', 'type' => 'boolean'], ['name' => 'null', 'type' => 'null']], 'operators' => ['+', '-', '*', '/', '%', '**', '&', '|', '^', '==', '===', '!=', '!==', '<', '>', '<=', '>=', 'matches', 'not', '!', 'and', '&&', 'or', '||', '~', 'in', 'not in', '..', '?', '?:', ':'], 'variables' => array_values($descriptor->getVariableTypeInfo()), 'functions' => array_values($descriptor->getFunctionTypeInfo()), 'typeinfo' => $descriptor->getDetailedTypeInfo()]);
$json_categories = json_encode($data['categories']);
$json_products = json_encode($data['products']);
$json_rules = json_encode($data['rules']);
require_once 'view.php';
