add getService

src/ocean/Assets.ts

@@ -1,7 +1,12 @@
 import { SearchQuery } from '../metadatastore/MetadataStore'
 import { DDO } from '../ddo/DDO'
 import { Metadata } from '../ddo/interfaces/Metadata'
-import { Service, ServiceAccess, ServiceComputePrivacy } from '../ddo/interfaces/Service'
+import {
+    Service,
+    ServiceAccess,
+    ServiceComputePrivacy,
+    ServiceCommon
+} from '../ddo/interfaces/Service'
 import { EditableMetadata } from '../ddo/interfaces/EditableMetadata'
 import Account from './Account'
 import DID from './DID'
@@ -352,6 +357,17 @@ export class Assets extends Instantiable {
         } as SearchQuery)
     }
 
+    public async getService(did: string, serviceType: string): Promise<ServiceCommon> {
+        const services: ServiceCommon[] = (await this.resolve(did)).service
+        let service
+        services.forEach((serv) => {
+            if (serv.type.toString() === serviceType) {
+                service = serv
+            }
+        })
+        return service
+    }
+
     public async createAccessServiceAttributes(
         creator: Account,
         dtCost: number,

test/integration/Marketplaceflow.test.ts

@@ -147,7 +147,9 @@ describe('Marketplace flow', () => {
         })
 
         it('Marketplace posts asset for sale', async () => {
-            // const downloadService = await ocean.assets.getService(ddo.id, 'download')
+            const accessService = await ocean.assets.getService(ddo.id, 'access')
+            const price = 20
+            assert(accessService.attributes.main.dtCost * price === 200)
         })
 
         it('Bob gets datatokens', async () => {