- more tests

Author: evgeny-s

ts-tests/suites/dev/subtensor/transaction-payment-wrapper/00-transaction-payment-wrapper.test.ts

@@ -53,5 +53,42 @@ describeSuite({
                 expect(hotkeyBalance).toEqual(existentialDeposit);
             },
         });
+
+        it({
+            id: "T02",
+            title: "Fees for set_weights charged from hotkey if no association",
+            test: async () => {
+                const coldkey = generateKeyringPair("sr25519");
+                const hotkey = generateKeyringPair("sr25519");
+
+                log(`coldkey: ${coldkey.address}`);
+                log(`hotkey: ${hotkey.address}`);
+
+                const initialBalance = tao(1e10);
+
+                log("Set Up");
+                const existentialDeposit = await api.consts.balances.existentialDeposit.toBigInt();
+                // Hotkey should "exist", even if coldkey is paying for tx
+                await devForceSetBalance(api, context, hotkey.address, initialBalance);
+
+                const hotkeyBalanceBefore = (await api.query.system.account(hotkey.address)).data.free.toBigInt();
+
+                log("Execute the tx from hotkey, no association, hotkey will pay");
+                await devSetWeightsTx(api, context, hotkey, 0, [], [], 0n);
+
+                const events = await api.query.system.events();
+                const feeEvent = events.filter((a) => {
+                    return a.event.method.toString() === "TransactionFeePaid";
+                });
+
+                const hotkeyBalanceAfter = (await api.query.system.account(hotkey.address)).data.free.toBigInt();
+                const coldkeyBalanceAfter = (await api.query.system.account(coldkey.address)).data.free.toBigInt();
+                // Fees paid by the hotkey
+                const txFee = feeEvent[0].event.data.actualFee.toBigInt();
+                expect(txFee).toBeGreaterThan(0n);
+                expect(coldkeyBalanceAfter).toEqual(0n);
+                expect(hotkeyBalanceBefore - txFee).toEqual(hotkeyBalanceAfter);
+            },
+        });
     },
 });