Add native test for verifying JsonSubTypes.Type handling

integration-tests/jackson/src/main/java/io/quarkus/it/jackson/JsonSubTypesResource.java

@@ -0,0 +1,29 @@
+package io.quarkus.it.jackson;
+
+import java.util.List;
+
+import jakarta.ws.rs.GET;
+import jakarta.ws.rs.Path;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import io.quarkus.it.jackson.model.Elephant;
+import io.quarkus.it.jackson.model.MammalFamily;
+import io.quarkus.it.jackson.model.Whale;
+
+@Path("jsonSubTypes")
+public class JsonSubTypesResource {
+
+    private final ObjectMapper objectMapper;
+
+    public JsonSubTypesResource(ObjectMapper objectMapper) {
+        this.objectMapper = objectMapper;
+    }
+
+    @GET
+    public String test() throws JsonProcessingException {
+        return objectMapper.writeValueAsString(new MammalFamily(List.of(
+                new Whale(30.0, "white"), new Elephant(10, "africa"))));
+    }
+}

integration-tests/jackson/src/main/java/io/quarkus/it/jackson/model/Elephant.java

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+package io.quarkus.it.jackson.model;
+
+public record Elephant(
+        int hornLength, String continent) implements Mammal {
+}

integration-tests/jackson/src/main/java/io/quarkus/it/jackson/model/Mammal.java

@@ -0,0 +1,15 @@
+package io.quarkus.it.jackson.model;
+
+import static com.fasterxml.jackson.annotation.JsonTypeInfo.As.PROPERTY;
+import static com.fasterxml.jackson.annotation.JsonTypeInfo.Id.NAME;
+
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+
+@JsonTypeInfo(use = NAME, include = PROPERTY)
+@JsonSubTypes({
+        @JsonSubTypes.Type(value = Elephant.class, name = "Elephant"),
+        @JsonSubTypes.Type(value = Whale.class, name = "Whale"),
+})
+public interface Mammal {
+}

integration-tests/jackson/src/main/java/io/quarkus/it/jackson/model/MammalFamily.java

@@ -0,0 +1,9 @@
+package io.quarkus.it.jackson.model;
+
+import java.util.Collection;
+
+import io.quarkus.runtime.annotations.RegisterForReflection;
+
+@RegisterForReflection
+public record MammalFamily(Collection<Mammal> mammals) {
+}

integration-tests/jackson/src/main/java/io/quarkus/it/jackson/model/Whale.java

@@ -0,0 +1,5 @@
+package io.quarkus.it.jackson.model;
+
+public record Whale(
+        double swimSpeed, String color) implements Mammal {
+}

integration-tests/jackson/src/test/java/io/quarkus/it/jackson/JsonSubTypesResourceIT.java

@@ -0,0 +1,7 @@
+package io.quarkus.it.jackson;
+
+import io.quarkus.test.junit.QuarkusIntegrationTest;
+
+@QuarkusIntegrationTest
+public class JsonSubTypesResourceIT extends JsonSubTypesResourceTest {
+}

integration-tests/jackson/src/test/java/io/quarkus/it/jackson/JsonSubTypesResourceTest.java

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+package io.quarkus.it.jackson;
+
+import static io.restassured.RestAssured.given;
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.jupiter.api.Test;
+
+import io.quarkus.test.junit.QuarkusTest;
+import io.restassured.http.ContentType;
+import io.restassured.response.Response;
+
+@QuarkusTest
+class JsonSubTypesResourceTest {
+
+    @Test
+    void test() {
+        Response response = given()
+                .accept(ContentType.JSON)
+                .when()
+                .get("jsonSubTypes")
+                .then()
+                .statusCode(200)
+                .extract().response();
+        assertThat(response.jsonPath().getString("mammals[0].color")).isEqualTo("white");
+        assertThat(response.jsonPath().getString("mammals[1].continent")).isEqualTo("africa");
+    }
+}