Add a test case for getting WCCC tx by tracker

The added test case succeeds on this branch but fails on current master
branch because current master doesn't store WrapCCC tracker in body_db
and invoice_db.

Author: HoOngEe

test/src/e2e/wrap.test.ts

@@ -198,6 +198,36 @@ describe("WrapCCC", function() {
         ).to.be.rejected;
     }).timeout(30_000);
 
+    it("WCCC tracker should return the corresponding transaction", async function() {
+        const wrapCCC = node.sdk.core.createWrapCCCTransaction({
+            shardId: 0,
+            recipient: await node.createP2PKHBurnAddress(),
+            quantity: 30,
+            payer: PlatformAddress.fromAccountId(faucetAccointId, {
+                networkId: "tc"
+            })
+        });
+        const seq = (await node.sdk.rpc.chain.getSeq(faucetAddress))!;
+        expect(seq).not.to.be.null;
+        const signedWrapCCC = wrapCCC.sign({
+            secret: faucetSecret,
+            seq,
+            fee: 10
+        });
+
+        const hash = await node.sdk.rpc.chain.sendSignedTransaction(
+            signedWrapCCC
+        );
+        const tracker = wrapCCC.tracker();
+
+        expect(await node.sdk.rpc.chain.containsTransaction(hash)).be.true;
+        expect(await node.sdk.rpc.chain.getTransactionByTracker(tracker)).not
+            .null;
+        expect(
+            await node.sdk.rpc.chain.getTransactionResultsByTracker(tracker)
+        ).deep.equal([true]);
+    });
+
     afterEach(async function() {
         await node.clean();
     });