<dependency>
<groupId>cz.geek</groupId>
<artifactId>geek-util</artifactId>
<version>VERSION</version>
</dependency>
class MyValidator implements Validator { ... }
MyBean bean = new MyBean();
Errors errs = new BeanPropertyBindingResult(bean, "foo");
new MyValidator().validate(bean, errs);
assertThat(errs, hasFieldError("myfield", "notnull"));