introduce phpstan (#6)

.gitattributes

@@ -5,5 +5,5 @@
 /.gitattributes export-ignore
 /.gitignore export-ignore
 /.php_cs.dist export-ignore
-/buddy.yml export-ignore
+/phpstan.neon export-ignore
 /phpunit.xml.dist export-ignore

composer.json

@@ -25,7 +25,8 @@
         "phpunit/phpunit": "^9.5",
         "symfony/browser-kit": "^5.2",
         "symfony/framework-bundle": "^5.2",
-        "symfony/stopwatch": "^5.2"
+        "symfony/stopwatch": "^5.2",
+        "phpstan/phpstan": "^1.11"
     },
     "autoload": {
         "psr-4": {
@@ -45,6 +46,7 @@
     "scripts": {
         "build": [
             "@check-cs",
+            "@phpstan",
             "@phpunit"
         ],
         "check-cs": [
@@ -55,6 +57,9 @@
         ],
         "phpunit": [
             "phpunit"
+        ],
+        "phpstan": [
+            "phpstan analyse -c phpstan.neon"
         ]
     }
 }

phpstan.neon

@@ -0,0 +1,8 @@
+includes:
+	- vendor/phpstan/phpstan/conf/bleedingEdge.neon
+parameters:
+	phpVersion: 80100
+	level: max
+	paths:
+		- src
+		- tests

src/Assault/ExceptionAssault.php

@@ -23,7 +23,6 @@ public function isActive(): bool
 
     public function attack(): void
     {
-        $exceptionClass = $this->settings->exceptionClass();
-        throw new $exceptionClass();
+        throw new ($this->settings->exceptionClass())();
     }
 }

src/Assault/MemoryAssault.php

@@ -36,6 +36,14 @@ public function attack(): void
         }
     }
 
+    /**
+     * @return mixed[]
+     */
+    public function memoryVector(): array
+    {
+        return $this->memoryVector;
+    }
+
     private function fillFraction(): float
     {
         return memory_get_usage(true) / $this->totalMemory;

src/ChaosMonkey.php

@@ -13,6 +13,9 @@ class ChaosMonkey
 
     private Settings $settings;
 
+    /**
+     * @param iterable<Assault> $assaults
+     */
     public function __construct(iterable $assaults, Settings $settings)
     {
         foreach ($assaults as $assault) {

src/Settings.php

@@ -14,6 +14,9 @@ class Settings
     private int $latencyMaxMs;
 
     private bool $exceptionActive;
+    /**
+     * @var class-string<\Throwable>
+     */
     private string $exceptionClass;
 
     private bool $killAppActive;
@@ -76,6 +79,9 @@ public function setExceptionActive(bool $exceptionActive): void
         $this->exceptionActive = $exceptionActive;
     }
 
+    /**
+     * @param class-string<\Throwable> $exceptionClass
+     */
     public function setExceptionClass(string $exceptionClass): void
     {
         $this->exceptionClass = $exceptionClass;
@@ -126,6 +132,9 @@ public function exceptionActive(): bool
         return $this->exceptionActive;
     }
 
+    /**
+     * @return class-string<\Throwable>
+     */
     public function exceptionClass(): string
     {
         return $this->exceptionClass;

tests/MotherObject/SettingsMother.php

@@ -19,6 +19,9 @@ public static function withActiveLatency(int $minMs, int $maxMs): Settings
         return $settings;
     }
 
+    /**
+     * @param class-string<\Throwable> $exceptionClass
+     */
     public static function withExceptionActive(string $exceptionClass): Settings
     {
         $settings = new Settings();