chore: added empty string comparison tests

Author: andrepimpao

tests/GreaterThanOrEqualTest.php

@@ -41,6 +41,7 @@ public static function provideRuleFailureConditionData(): \Generator
         yield 'float' => [new GreaterThanOrEqual(10.0), 1.0, $exception, $message];
         yield 'int with float' => [new GreaterThanOrEqual(10), 1.0, $exception, $message];
         yield 'string' => [new GreaterThanOrEqual('z'), 'a', $exception, $message];
+        yield 'empty string' => [new GreaterThanOrEqual('a'), '', $exception, $message];
     }
 
     public static function provideRuleSuccessConditionData(): \Generator
@@ -57,6 +58,8 @@ public static function provideRuleSuccessConditionData(): \Generator
         yield 'same int with float' => [new GreaterThanOrEqual(10), 10.0];
         yield 'string' => [new GreaterThanOrEqual('a'), 'z'];
         yield 'same string' => [new GreaterThanOrEqual('a'), 'a'];
+        yield 'empty string' => [new GreaterThanOrEqual(''), 'a'];
+        yield 'same empty string' => [new GreaterThanOrEqual(''), ''];
     }
 
     public static function provideRuleMessageOptionData(): \Generator

tests/GreaterThanTest.php

@@ -47,6 +47,8 @@ public static function provideRuleFailureConditionData(): \Generator
         yield 'same int with float' => [new GreaterThan(10), 10.0, $exception, $message];
         yield 'string' => [new GreaterThan('z'), 'a', $exception, $message];
         yield 'same string' => [new GreaterThan('a'), 'a', $exception, $message];
+        yield 'empty string' => [new GreaterThan('a'), '', $exception, $message];
+        yield 'same empty string' => [new GreaterThan(''), '', $exception, $message];
     }
 
     public static function provideRuleSuccessConditionData(): \Generator
@@ -57,6 +59,7 @@ public static function provideRuleSuccessConditionData(): \Generator
         yield 'float' => [new GreaterThan(10.0), 20.0];
         yield 'int with float' => [new GreaterThan(10), 20.0];
         yield 'string' => [new GreaterThan('a'), 'z'];
+        yield 'empty string' => [new GreaterThan(''), 'a'];
     }
 
     public static function provideRuleMessageOptionData(): \Generator

tests/LessThanOrEqualTest.php

@@ -41,6 +41,7 @@ public static function provideRuleFailureConditionData(): \Generator
         yield 'float' => [new LessThanOrEqual(10.0), 20.0, $exception, $message];
         yield 'int with float' => [new LessThanOrEqual(10), 20.0, $exception, $message];
         yield 'string' => [new LessThanOrEqual('a'), 'z', $exception, $message];
+        yield 'empty string' => [new LessThanOrEqual(''), 'a', $exception, $message];
     }
 
     public static function provideRuleSuccessConditionData(): \Generator
@@ -57,6 +58,8 @@ public static function provideRuleSuccessConditionData(): \Generator
         yield 'same int with float' => [new LessThanOrEqual(10), 10.0];
         yield 'string' => [new LessThanOrEqual('z'), 'a'];
         yield 'same string' => [new LessThanOrEqual('a'), 'a'];
+        yield 'empty string' => [new LessThanOrEqual('a'), ''];
+        yield 'same empty string' => [new LessThanOrEqual(''), ''];
     }
 
     public static function provideRuleMessageOptionData(): \Generator

tests/LessThanTest.php

@@ -47,6 +47,8 @@ public static function provideRuleFailureConditionData(): \Generator
         yield 'same int with float' => [new LessThan(10), 10.0, $exception, $message];
         yield 'string' => [new LessThan('a'), 'z', $exception, $message];
         yield 'same string' => [new LessThan('a'), 'a', $exception, $message];
+        yield 'empty string' => [new LessThan(''), 'a', $exception, $message];
+        yield 'same empty string' => [new LessThan(''), '', $exception, $message];
     }
 
     public static function provideRuleSuccessConditionData(): \Generator
@@ -57,6 +59,7 @@ public static function provideRuleSuccessConditionData(): \Generator
         yield 'float' => [new LessThan(10.0), 1.0];
         yield 'int with float' => [new LessThan(10), 1.0];
         yield 'string' => [new LessThan('z'), 'a'];
+        yield 'empty string' => [new LessThan('a'), ''];
     }
 
     public static function provideRuleMessageOptionData(): \Generator