Add PHPStan integration

Author: GaryPEGEOT

.travis.yml

@@ -10,6 +10,7 @@ php:
     - 7.1
     - 7.2
     - 7.3
+    - 7.4
 
 env:
     global:
@@ -23,7 +24,9 @@ matrix:
     fast_finish: true
     include:
         - php: 7.1
-          env: COMPOSER_FLAGS="--prefer-stable --prefer-lowest" COVERAGE=true TEST_COMMAND="composer test-ci"
+          env: COMPOSER_FLAGS="--prefer-stable --prefer-lowest"
+        - php: 7.4
+          env: COMPOSER_FLAGS="--prefer-stable" COVERAGE=true TEST_COMMAND="composer test-ci"
 
 before_install:
     - if [[ $COVERAGE != true ]]; then phpenv config-rm xdebug.ini || true; fi

composer.json

@@ -20,7 +20,8 @@
     },
     "require-dev": {
         "symfony/phpunit-bridge": "^4.2|^5.0",
-        "friendsofphp/php-cs-fixer": "^2.14"
+        "friendsofphp/php-cs-fixer": "^2.14",
+        "phpstan/phpstan": "^0.12.57"
     },
     "autoload": {
         "psr-4": {
@@ -34,7 +35,10 @@
     },
     "scripts": {
         "test": "vendor/bin/simple-phpunit",
-        "test-ci": "vendor/bin/simple-phpunit --coverage-text --coverage-clover=build/coverage.xml"
+        "test-ci": [
+            "vendor/bin/simple-phpunit --coverage-text --coverage-clover=build/coverage.xml",
+            "vendor/bin/phpstan analyse src -l 8"
+        ]
     },
     "extra": {
         "branch-alias": {

src/NamingStrategy/PathNamingStrategy.php

@@ -16,14 +16,14 @@
 class PathNamingStrategy implements NamingStrategyInterface
 {
     /**
-     * @var array
+     * @var array<string, string[]>
      */
     private $options;
 
     /**
-     * @param array $options available options:
-     *                       - hash_headers:      the list of header names to hash,
-     *                       - hash_body_methods: Methods for which the body will be hashed (Default: PUT, POST, PATCH)
+     * @param array<string, string[]> $options available options:
+     *                                         - hash_headers:      the list of header names to hash,
+     *                                         - hash_body_methods: Methods for which the body will be hashed (Default: PUT, POST, PATCH)
      */
     public function __construct(array $options = [])
     {

src/Recorder/FilesystemRecorder.php

@@ -8,6 +8,7 @@
 use Psr\Http\Message\ResponseInterface;
 use Psr\Log\LoggerAwareInterface;
 use Psr\Log\LoggerAwareTrait;
+use Psr\Log\NullLogger;
 use Symfony\Component\Filesystem\Exception\IOException;
 use Symfony\Component\Filesystem\Filesystem;
 
@@ -32,10 +33,13 @@ final class FilesystemRecorder implements RecorderInterface, PlayerInterface, Lo
     private $filesystem;
 
     /**
-     * @var array
+     * @var array<string, string>
      */
     private $filters;
 
+    /**
+     * @param array<string, string> $filters
+     */
     public function __construct(string $directory, ?Filesystem $filesystem = null, array $filters = [])
     {
         $this->filesystem = $filesystem ?? new Filesystem();
@@ -50,6 +54,7 @@ public function __construct(string $directory, ?Filesystem $filesystem = null, a
 
         $this->directory = realpath($directory).\DIRECTORY_SEPARATOR;
         $this->filters = $filters;
+        $this->logger = new NullLogger();
     }
 
     public function replay(string $name): ?ResponseInterface
@@ -65,24 +70,32 @@ public function replay(string $name): ?ResponseInterface
 
         $this->log('Response replayed from {filename}', $context);
 
-        return Psr7\parse_response(file_get_contents($filename));
+        if (false === $content = file_get_contents($filename)) {
+            throw new \RuntimeException(sprintf('Unable to read "%s" file content', $filename));
+        }
+
+        return Psr7\parse_response($content);
     }
 
     public function record(string $name, ResponseInterface $response): void
     {
         $filename = "{$this->directory}$name.txt";
         $context = compact('name', 'filename');
 
-        $content = preg_replace(array_keys($this->filters), array_values($this->filters), Psr7\str($response));
+        if (null === $content = preg_replace(array_keys($this->filters), array_values($this->filters), Psr7\str($response))) {
+            throw new \RuntimeException('Some of the provided response filters are invalid.');
+        }
+
         $this->filesystem->dumpFile($filename, $content);
 
         $this->log('Response for {name} stored into {filename}', $context);
     }
 
+    /**
+     * @param array<string, string> $context
+     */
     private function log(string $message, array $context = []): void
     {
-        if ($this->logger) {
-            $this->logger->debug("[VCR-PLUGIN][FilesystemRecorder] $message", $context);
-        }
+        $this->logger->debug("[VCR-PLUGIN][FilesystemRecorder] $message", $context);
     }
 }