[12.x] RateLimiter remaining to 0 to prevent negative values. (#57851)

* RateLimiter remaining to 0 to prevent negative values

* Remove unused Repository import from CacheRateLimiterTest

Author: Button99

src/Illuminate/Cache/RateLimiter.php

@@ -232,7 +232,7 @@ public function remaining($key, $maxAttempts)
 
         $attempts = $this->attempts($key);
 
-        return $maxAttempts - $attempts;
+        return max(0, $maxAttempts - $attempts);
     }
 
     /**

tests/Cache/CacheRateLimiterTest.php

@@ -76,6 +76,18 @@ public function testHitHasNoMemoryLeak()
         $rateLimiter->hit('key', 1);
     }
 
+    public function testRemainingIsNotNegative(): void
+    {
+        $cache = m::mock(Cache::class);
+        $cache->shouldReceive('get')->with('key', 0)->andReturn(5);
+        $cache->shouldReceive('getStore')->andReturn(new ArrayStore);
+
+        $rateLimiter = new RateLimiter($cache);
+
+        $this->assertSame(0, $rateLimiter->remaining('key', 3));
+        $this->assertSame(0, $rateLimiter->retriesLeft('key', 3));
+    }
+
     public function testRetriesLeftReturnsCorrectCount()
     {
         $cache = m::mock(Cache::class);