Add one more test case

Author: stfndamjanovic

src/StringConfig.php

@@ -4,6 +4,8 @@
 
 namespace Stfn\RandomString;
 
+use Closure;
+
 class StringConfig
 {
     const CHARSET_UPPERCASE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
@@ -24,7 +26,7 @@ class StringConfig
 
     protected bool $unique = false;
 
-    protected \Closure|null $skipCallback = null;
+    protected Closure|null $skipCallback = null;
 
     public function __construct($length = 16)
     {
@@ -149,7 +151,7 @@ public function hasSkipCallback(): bool
         return is_callable($this->skipCallback);
     }
 
-    public function getSkipCallback(): \Closure|null
+    public function getSkipCallback(): Closure|null
     {
         return $this->skipCallback;
     }
@@ -179,7 +181,7 @@ public function isUnique(): bool
         return $this->unique;
     }
 
-    public function getCount()
+    public function getCount(): int
     {
         return $this->count;
     }

tests/RandomStringTest.php

@@ -209,6 +209,20 @@ public function test_if_it_fails_after_max_possible_combination_reached()
         $instance->generate();
     }
 
+    public function test_if_it_fails_when_count_is_greater_than_possible_combinations()
+    {
+        $config = new StringConfig();
+        $config->length(2)
+            ->count(5)
+            ->unique()
+            ->charset('01');
+
+        $instance = new RandomString($config);
+
+        $this->expectException(InvalidStringConfigException::class);
+        $instance->generate();
+    }
+
     public function test_if_it_fails_after_max_possible_combination_reached_using_unique()
     {
         $config = new StringConfig();