Jackson deserialization into a complex constructor

Sample.java

@SpringBootTest
@RequiredArgsConstructor
class Sample {
	
	private final ObjectMapper jackson;
	
	@Test
	void deserializesThroughConstructor() throws Exception {

		var result = jackson.readValue("{\"firstname\" : \"Dave\", \"lastname\" : \"Matthews\" }", SomeSample.class);

		assertThat(result.getFirstname()).isEqualTo("Dave");
		assertThat(result.getLastname()).isEqualTo("Matthews");
	}

	@Value
	static class SomeSample {
		String firstname, lastname;
	}
}