add additional Test Cases

Author: andrei-gafton-rtgt

tests/ValidationTest.php

@@ -41,6 +41,26 @@ public function testUnique(): void
             ['name' => 'required|unique:users']
         );
         $this->assertFalse($validator->fails());
+        
+        User::create(['name' => 'Johnny Cash', 'email' => 'johnny.cash+200@gmail.com']);
+        
+        $validator = Validator::make(
+            ['email' => 'johnny.cash+200@gmail.com'],
+            ['email' => 'required|unique:users']
+        );
+        $this->assertTrue($validator->fails());     
+                
+        $validator = Validator::make(
+            ['email' => 'johnny.cash+20@gmail.com'],
+            ['email' => 'required|unique:users']
+        );
+        $this->assertFalse($validator->fails());
+        
+        $validator = Validator::make(
+            ['email' => 'johnny.cash+1@gmail.com'],
+            ['email' => 'required|unique:users']
+        );
+        $this->assertFalse($validator->fails());  
     }
 
     public function testExists(): void