Sync with cds runtime for next release

test/hierarchical-data.test.js

@@ -35,6 +35,21 @@ describe('Hierarchical Data', ()=>{
   ))
 
 	it ('supports nested reads', async()=>{
+		if (cds.version >= '5.9.0') {
+			expect (await
+				SELECT.one.from (Cats, c=>{
+					c.ID, c.name.as('parent'), c.children (c=>{
+						c.name.as('child')
+					})
+				}) .where ({name:'Cat'})
+			) .to.eql (
+				{ ID:101, parent:'Cat', children:[
+					{ child:'Kitty' },
+					{ child:'Catwoman' },
+				]}
+			)
+			return
+		}
 		expect (await
 			SELECT.one.from (Cats, c=>{
 				c.ID, c.name.as('parent'), c.children (c=>{
@@ -50,6 +65,25 @@ describe('Hierarchical Data', ()=>{
 	})
 
 	it ('supports deeply nested reads', async()=>{
+		if (cds.version >= '5.9.0') {
+			expect (await SELECT.one.from (Cats, c=>{
+				c.ID, c.name, c.children (
+					c => { c.name },
+					{levels:3}
+				)
+			}) .where ({name:'Cat'})
+			) .to.eql (
+				{ ID:101, name:'Cat', children:[
+					{ name:'Kitty', children:[
+						{ name:'Kitty Cat', children:[
+							{ name:'Aristocat' }, ]},  // level 3
+						{ name:'Kitty Bat', children:[] }, ]},
+					{ name:'Catwoman', children:[
+						{ name:'Catalina', children:[] } ]},
+				]}
+			)
+			return
+		}
 		expect (await SELECT.one.from (Cats, c=>{
 			c.ID, c.name, c.children (
 				c => { c.name },