[#1793] Test case showing the issue has been resolved

Author: dreab8

hibernate-reactive-core/src/test/java/org/hibernate/reactive/HqlSelectNewConstructorTest.java

@@ -0,0 +1,127 @@
+/* Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * Copyright: Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.reactive;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import io.vertx.junit5.VertxTestContext;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OneToMany;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import static jakarta.persistence.CascadeType.PERSIST;
+import static jakarta.persistence.FetchType.LAZY;
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class HqlSelectNewConstructorTest extends BaseReactiveTest {
+
+	@Override
+	protected Collection<Class<?>> annotatedEntities() {
+		return List.of( Book.class, Author.class );
+	}
+
+	@BeforeEach
+	public void prepareDb(VertxTestContext context) {
+		Author author1 = new Author("Iain M. Banks");
+		Author author2 = new Author("Neal Stephenson");
+		Book book1 = new Book("1-85723-235-6", "Feersum Endjinn", author1);
+		Book book2 = new Book("0-380-97346-4", "Cryptonomicon", author2);
+		Book book3 = new Book("0-553-08853-X", "Snow Crash", author2);
+		test( context, getMutinySessionFactory().withTransaction( session -> session.persistAll(
+				author1, author2, book1, book2, book3
+		) ) );
+	}
+
+	@Test
+	public void testSimpleUpdateSameTransaction(VertxTestContext context) {
+		test( context, getMutinySessionFactory()
+				.withTransaction( session ->
+					session.createQuery(
+									"SELECT NEW Book(book.author) from Book book order by title desc",
+									Book.class
+							)
+							.getResultList()
+				 )
+				.invoke( books -> assertThat( books ).hasSize( 3 ) )
+		);
+	}
+
+	@Entity(name = "Book")
+	public static class Book {
+		@Id
+		@GeneratedValue
+		private Integer id;
+
+		private String isbn;
+
+		private String title;
+
+		@ManyToOne(fetch = LAZY)
+		private Author author;
+
+		public Book() {
+		}
+
+		public Book(Author author) {
+			this.author = author;
+		}
+
+		public Book(String isbn, String title, Author author) {
+			this.isbn = isbn;
+			this.title = title;
+			this.author = author;
+			author.books.add( this );
+		}
+
+		public Integer getId() {
+			return id;
+		}
+
+		public String getIsbn() {
+			return isbn;
+		}
+
+		public Author getAuthor() {
+			return author;
+		}
+	}
+
+	@Entity(name = "Author")
+	public static class Author {
+		@Id @GeneratedValue
+		private Integer id;
+
+		private String name;
+
+		@OneToMany(mappedBy = "author", cascade = PERSIST)
+		private List<Book> books = new ArrayList<>();
+
+		public Author() {
+		}
+
+		public Author(String name) {
+			this.name = name;
+		}
+
+		public Integer getId() {
+			return id;
+		}
+
+		public String getName() {
+			return name;
+		}
+
+		public List<Book> getBooks() {
+			return books;
+		}
+	}
+}