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<?php |
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namespace whm\Smoke\Rules\Json; |
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use Peekmo\JsonPath\JsonStore; |
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use Psr\Http\Message\ResponseInterface; |
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use whm\Smoke\Http\Response; |
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use whm\Smoke\Rules\StandardRule; |
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use whm\Smoke\Rules\ValidationFailedException; |
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/** |
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* This rule checks if xpath is found in a html document. |
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*/ |
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class JsonPathExistsRule extends StandardRule |
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{ |
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protected $contentTypes = ['json']; |
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private $jsonPaths; |
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public function init(array $jsonPaths) |
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{ |
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$this->jsonPaths = $jsonPaths; |
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} |
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/** |
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* @param $relation string |
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* @param $value int |
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* @param $count int |
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* |
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* @return bool |
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*/ |
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private function checkRelation($relation, $expected, $current) |
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{ |
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switch ($relation) { |
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case 'equals': |
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if ($expected !== $current) { |
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return false; |
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} |
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break; |
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case 'less than': |
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if ($expected <= $current) { |
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return false; |
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} |
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break; |
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case 'greater than': |
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if ($expected >= $current) { |
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return false; |
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} |
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break; |
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} |
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return true; |
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} |
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public function doValidation(ResponseInterface $response) |
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{ |
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$body = (string)$response->getBody(); |
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$json = json_decode($body); |
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if (!$json) { |
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throw new ValidationFailedException('The given json document is empty or not valid json.'); |
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} |
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$store = new JsonStore($json); |
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$error = false; |
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$noCorrectJsonPaths = array(); |
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foreach ($this->jsonPaths as $path) { |
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$jsonValue = $store->get($path['pattern']); |
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$count = count($jsonValue); |
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if ($jsonValue === false || (is_array($jsonValue) && empty($jsonValue))) { |
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$error = true; |
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$noCorrectJsonPaths[] = $path['pattern'] . ' (JSON path not found)'; |
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} |
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if ($this->checkRelation($path['relation'], (int)$path['value'], $count) === false) { |
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$error = true; |
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$noCorrectJsonPaths[] = $path['pattern'] . ' (' . $count . ' elements found, expected ' . $path['relation'] . ' ' . $path['value'] . ')'; |
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} |
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} |
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if ($error === true) { |
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$allNoCorrectJsonPaths = implode('", "', $noCorrectJsonPaths); |
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throw new ValidationFailedException('Disonances with JSON Paths "' . $allNoCorrectJsonPaths . '!'); |
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} |
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} |
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} |
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phmLabs /
Smoke
