Merge pull request #110 from froschdesign/hotfix/isfloat-emptystring

IsFloat validator should return a standard error message for empty strings

Author: froschdesign

src/Validator/IsFloat.php

@@ -118,6 +118,12 @@ public function isValid($value)
             return true;
         }
 
+        if ($value === '') {
+            $this->error(self::NOT_FLOAT);
+
+            return false;
+        }
+
         // Need to check if this is scientific formatted string. If not, switch to decimal.
         $formatter = new NumberFormatter($this->getLocale(), NumberFormatter::SCIENTIFIC);
 

test/Validator/IsFloatTest.php

@@ -217,4 +217,14 @@ public function testNotFloat(): void
         $message = $this->validator->getMessages();
         self::assertStringContainsString('does not appear to be a float', $message['notFloat']);
     }
+
+    public function testEmptyStringShouldReturnStandardErrorMessage(): void
+    {
+        self::assertFalse($this->validator->isValid(''));
+        $message = $this->validator->getMessages();
+        self::assertStringContainsString(
+            'does not appear to be a float',
+            $message['notFloat']
+        );
+    }
 }