Non fungible token ertp tests

packages/ERTP/test/unitTests/test-mintObj.js

@@ -104,3 +104,63 @@ test('mint.mintPayment setMathHelpers with invites', t => {
     t.end();
   }
 });
+
+
+// Tests related to non-fungible tokens
+// This test models ballet tickets
+test('non-fungible tokens example', t => {
+  try {
+    const { mint: balletTicketMint, issuer: balletTicketIssuer, amountMath } = produceIssuer('Agoric Ballet Opera tickets', 'set');
+
+    const startDateString = (new Date(2020, 1, 17, 20, 30)).toISOString();
+
+    const ticketDescriptionObjects = Array(5).fill().map((_, i) => ({
+      seat: i+1,
+      show: 'The Sofa',
+      start: startDateString,
+    }))
+
+    const balletTicketPayments = ticketDescriptionObjects.map(ticketDescription => {
+      return balletTicketMint.mintPayment( amountMath.make(harden([ticketDescription])) )
+    })
+
+    // Alice will buy ticket 1
+    const paymentForAlice = balletTicketPayments[0];
+    // Bob will buy tickets 3 and 4
+    const paymentForBob = balletTicketIssuer.combine([balletTicketPayments[2], balletTicketPayments[3]])
+
+
+    // ALICE SIDE
+    // Alice bought ticket 1 and has access to the balletTicketIssuer, because it's public
+    const myTicketPayment_Alice = balletTicketIssuer.claim(paymentForAlice)
+    // the call to claim hasn't thrown, so Alice knows myTicketPayment_Alice 
+    // is a genuine 'Agoric Ballet Opera tickets' payment and she has exclusive access 
+    // to its handle
+    const paymentAmount_Alice = balletTicketIssuer.getBalance(myTicketPayment_Alice)    
+
+    t.equals(paymentAmount_Alice.extent.length, 1);
+    t.equals(paymentAmount_Alice.extent[0].seat, 1)
+    t.equals(paymentAmount_Alice.extent[0].show, 'The Sofa')
+    t.equals(paymentAmount_Alice.extent[0].start, startDateString)
+
+
+    // BOB SIDE
+    // Bob bought ticket 3 and 4 and has access to the balletTicketIssuer, because it's public
+    const myTicketPayment_Bob = balletTicketIssuer.claim(paymentForBob)
+    const paymentAmount_Bob = balletTicketIssuer.getBalance(myTicketPayment_Bob)
+
+    t.equals(paymentAmount_Bob.extent.length, 2);
+    t.equals(paymentAmount_Bob.extent[0].seat, 3);
+    t.equals(paymentAmount_Bob.extent[1].seat, 4);
+    t.equals(paymentAmount_Bob.extent[0].show, 'The Sofa')
+    t.equals(paymentAmount_Bob.extent[1].show, 'The Sofa')
+    t.equals(paymentAmount_Bob.extent[0].start, startDateString)
+    t.equals(paymentAmount_Bob.extent[1].start, startDateString)
+
+
+  } catch (e) {
+    t.assert(false, e);
+  } finally {
+    t.end();
+  }
+});