import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.junit.jupiter.MockitoExtension;
import reactor.core.publisher.Mono;
import reactor.function.TupleUtils;
import java.util.Optional;
import static org.assertj.core.api.Assertions.assertThat;
@ExtendWith(MockitoExtension.class)
class PmdTest2 {
    @Test
    void test() {
        var res = Mono.zip(Mono.just(Optional.of("Some test")), Mono.just(TestClass.of("some 2")))
                .flatMap(TupleUtils.function((par1, par2) -> Mono.just(createProperty(par1, par2))))
                .map(objectProperty -> addRequired(objectProperty))
                .block();
        assertThat(res.required).isEqualTo("pop");
        assertThat(res.val).isEqualTo("Some test");
    }
    private TestClass createProperty(Optional<String> par1, TestClass objectProperty) {
        return TestClass.of(par1.orElse("par5"));
    }
    private TestClass addRequired(TestClass objectProperty) {
        return objectProperty.withRequiredProperty("pop");
    }
    private static class TestClass {
        private String required;
        private String val;
        TestClass(String val) {
            this.val = val;
        }
        public static TestClass of(String val) {
            return new TestClass(val);
        }
        public TestClass withRequiredProperty(String s) {
            required = s;
            return this;
        }
        public String getRequired() {
            return required;
        }
        public String getVal() {
            return val;
        }
    }
}