add unit test for EmailRuleTest

Co-authored-by: Julian Gojani <julian@gojani.xyz>

Author: JWaldecker

src/test/java/test/org/javawebstack/validator/EmailRuleTest.java

@@ -0,0 +1,31 @@
+package test.org.javawebstack.validator;
+
+import org.javawebstack.abstractdata.AbstractMapper;
+import org.javawebstack.validator.Rule;
+import org.javawebstack.validator.ValidationContext;
+import org.javawebstack.validator.Validator;
+import org.junit.jupiter.api.Test;
+
+import java.util.Random;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class EmailRuleTest {
+
+    @Test
+    public void testSimpleRequiredRule(){
+        Validator validator = Validator.getValidator(TestObject1.class);
+        TestObject1 test = new TestObject1();
+        test.email = "Test";
+        assertFalse(validator.validate(new ValidationContext(), new AbstractMapper().toAbstract(test)).isValid());
+        test.email = "info@test.de";
+        assertTrue(validator.validate(new ValidationContext(), new AbstractMapper().toAbstract(test)).isValid());
+    }
+
+    private static class TestObject1 {
+        @Rule("email")
+        String email;
+    }
+
+}