feat: portfolio getName method

src/api/entities/NumberedPortfolio.ts

@@ -2,6 +2,7 @@ import BigNumber from 'bignumber.js';
 
 import { Portfolio } from '~/api/entities';
 import { Context } from '~/base';
+import { bytesToString, numberToU64 } from '~/utils';
 
 export interface UniqueIdentifiers {
   did: string;
@@ -37,4 +38,23 @@ export class NumberedPortfolio extends Portfolio {
 
     this.id = id;
   }
+
+  /**
+   * Return the Portfolio name
+   */
+  public async getName(): Promise<string> {
+    const {
+      owner: { did },
+      id,
+      context: {
+        polymeshApi: {
+          query: { portfolio },
+        },
+      },
+      context,
+    } = this;
+
+    const rawPortfolioName = await portfolio.portfolios(did, numberToU64(id, context));
+    return bytesToString(rawPortfolioName);
+  }
 }

src/api/entities/__tests__/NumberedPortfolio.ts

@@ -50,4 +50,22 @@ describe('Numberedortfolio class', () => {
       expect(NumberedPortfolio.isUniqueIdentifiers({ did: 1, id: new BigNumber(1) })).toBe(false);
     });
   });
+
+  describe('method: getName', () => {
+    test('should return the name of the Portfolio', async () => {
+      const id = new BigNumber(1);
+      const did = 'someDid';
+      const portfolioName = 'someName';
+      const rawPortfolioName = dsMockUtils.createMockBytes(portfolioName);
+      const numberedPortfolio = new NumberedPortfolio({ id, did }, context);
+
+      dsMockUtils.createQueryStub('portfolio', 'portfolios', {
+        returnValue: rawPortfolioName,
+      });
+
+      const result = await numberedPortfolio.getName();
+
+      expect(result).toEqual(portfolioName);
+    });
+  });
 });