fixed accidential push

bookshop/srv/cat-service.js

@@ -1,20 +1,13 @@
 const cds = require('@sap/cds')
-class CatalogService extends cds.ApplicationService { async init(){
+
+class CatalogService extends cds.ApplicationService { init(){
 
   const { Books } = cds.entities ('sap.capire.bookshop')
-  const { ListOfBooks } = this.entities
-
-  this.on('READ','ListOfBooks', ()=>{
-    Error.stackTraceLimit = 22
-    cds._debug = true
-    return SELECT.from (ListOfBooks)
-  })
 
   // Reduce stock of ordered books if available stock suffices
   this.on ('submitOrder', async req => {
     const {book,quantity} = req.data
     if (quantity < 1) return req.reject (400,`quantity has to be 1 or more`)
-    cds._debug = true
     let b = await SELECT `stock` .from (Books,book)
     if (!b) return req.error (404,`Book #${book} doesn't exist`)
     let {stock} = b
@@ -29,8 +22,7 @@ class CatalogService extends cds.ApplicationService { async init(){
     if (each.stock > 111) each.title += ` -- 11% discount!`
   })
 
-  await super.init()
-  return
+  return super.init()
 }}
 
 module.exports = { CatalogService }

bookshop/test/requests.http

@@ -16,9 +16,9 @@ GET {{server}}/browse/$metadata
 
 ### ------------------------------------------------------------------------
 # Browse Books as any user
-GET {{server}}/browse/Books?
+GET {{server}}/browse/ListOfBooks?
   # &$select=title,stock
-  # &$expand=currency
+  &$expand=genre
   # &sap-language=de
 {{me}}
 

test/odata.test.js

@@ -4,6 +4,46 @@ axios.defaults.auth = { username: 'alice', password: 'admin' }
 
 describe('cap/samples - Bookshop APIs', () => {
 
+  // Genres
+  const Drama = {
+    "name": "Drama",
+    "descr": null,
+    "ID": 11,
+    "parent_ID": 10
+  }
+  const Mystery = {
+    "name": "Mystery",
+    "descr": null,
+    "ID": 16,
+    "parent_ID": 10
+  }
+  const Fantasy = {
+    "name": "Fantasy",
+    "descr": null,
+    "ID": 13,
+    "parent_ID": 10
+  }
+
+  // Currencies
+  const GBP = {
+    "name": "British Pound",
+    "descr": null,
+    "code": "GBP",
+    "symbol": "£"
+  }
+  const USD = {
+    "name": "US Dollar",
+    "descr": null,
+    "code": "USD",
+    "symbol": "$"
+  }
+  const JPY = {
+    "name": "Yen",
+    "descr": null,
+    "code": "JPY",
+    "symbol": "¥"
+  }
+
 
   it('serves $metadata documents in v4', async () => {
     const { headers, status, data } = await GET `/browse/$metadata`
@@ -16,6 +56,16 @@ describe('cap/samples - Bookshop APIs', () => {
     expect(data).to.contain('<Annotation Term="Common.Label" String="Currency"/>')
   })
 
+  it('serves ListOfBooks?$expand=genre,currency', async () => {
+    const { data } = await GET `/browse/ListOfBooks ${{
+      params: { $search: 'Po', $select: `title,author`, $expand:`genre,currency` },
+    }}`
+    expect(data.value).to.eql([
+      { ID: 251, title: 'The Raven', author: 'Edgar Allen Poe', genre:Mystery, currency:USD  },
+      { ID: 252, title: 'Eleonora', author: 'Edgar Allen Poe', genre:Mystery, currency:USD  },
+    ])
+  })
+
   it('supports $search in multiple fields', async () => {
     const { data } = await GET `/browse/Books ${{
       params: { $search: 'Po', $select: `title,author` },