add missing null sources to notNull implying rules

Author: SirCotare

src/main/java/it/aboutbits/springboot/testing/validation/rule/NotBlankRule.java

@@ -4,6 +4,7 @@
 import it.aboutbits.springboot.testing.validation.core.Rule;
 import it.aboutbits.springboot.testing.validation.core.ValidationRulesData;
 import it.aboutbits.springboot.testing.validation.source.BlankValueSource;
+import it.aboutbits.springboot.testing.validation.source.NullValueSource;
 import lombok.NonNull;
 
 @SuppressWarnings("unchecked")
@@ -12,6 +13,9 @@ default V notBlank(@NonNull String property) {
         addRule(
                 new Rule(property, BlankValueSource.class)
         );
+        addRule(
+                new Rule(property, NullValueSource.class)
+        );
         return (V) this;
     }
 }

src/main/java/it/aboutbits/springboot/testing/validation/rule/NotEmptyRule.java

@@ -4,6 +4,7 @@
 import it.aboutbits.springboot.testing.validation.core.Rule;
 import it.aboutbits.springboot.testing.validation.core.ValidationRulesData;
 import it.aboutbits.springboot.testing.validation.source.EmptyValueSource;
+import it.aboutbits.springboot.testing.validation.source.NullValueSource;
 import lombok.NonNull;
 
 @SuppressWarnings("unchecked")
@@ -12,6 +13,9 @@ default V notEmpty(@NonNull String property) {
         addRule(
                 new Rule(property, EmptyValueSource.class)
         );
+        addRule(
+                new Rule(property, NullValueSource.class)
+        );
         return (V) this;
     }
 }