#1739 - Entity with just @Id and @OneToMany fields produces broken insert query

src/test/java/org/tests/insert/OnlyIdEntity.java

@@ -0,0 +1,19 @@
+package org.tests.insert;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+
+@Entity
+public class OnlyIdEntity {
+
+  @Id
+  long id;
+
+  public long getId() {
+    return id;
+  }
+
+  public void setId(long id) {
+    this.id = id;
+  }
+}

src/test/java/org/tests/insert/TestOnlyIdEntity.java

@@ -0,0 +1,32 @@
+package org.tests.insert;
+
+import io.ebean.DB;
+import io.ebean.Database;
+import io.ebean.annotation.ForPlatform;
+import io.ebean.annotation.Platform;
+import org.ebeantest.LoggedSqlCollector;
+import org.junit.Test;
+
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class TestOnlyIdEntity {
+
+  @ForPlatform({Platform.H2, Platform.POSTGRES})
+  @Test
+  public void insert() {
+
+    final Database database = DB.getDefault();
+
+    LoggedSqlCollector.start();
+    OnlyIdEntity bean = new OnlyIdEntity();
+    database.save(bean);
+
+    List<String> sql = LoggedSqlCollector.stop();
+
+    assertThat(bean.getId()).isGreaterThan(0);
+    assertThat(sql).hasSize(1);
+    assertThat(sql.get(0)).contains("insert into only_id_entity default values");
+  }
+}