check burn rate scope

Author: open-junius

evm-tests/test/alpha.precompile.test.ts

@@ -8,6 +8,7 @@ import { PublicClient } from "viem";
 import { PolkadotSigner, TypedApi } from "polkadot-api";
 import { toViemAddress, convertPublicKeyToSs58 } from "../src/address-utils"
 import { IAlphaABI, IALPHA_ADDRESS } from "../src/contracts/alpha"
+import { u64 } from "@polkadot-api/substrate-bindings";
 
 describe("Test Alpha Precompile", () => {
     // init substrate part
@@ -222,6 +223,9 @@ describe("Test Alpha Precompile", () => {
 
             assert.strictEqual(ckBurn, ckBurnOnChain, "CK burn should match on chain");
             assert.ok(ckBurn !== undefined, "CK burn should be defined");
+            const ckBurnPercentage = BigInt(ckBurn) * BigInt(100) / BigInt(2 ** 64 - 1)
+            assert.ok(ckBurnPercentage >= BigInt(0), "CK burn percentage should be non-negative");
+            assert.ok(ckBurnPercentage <= BigInt(100), "CK burn percentage should be less than or equal to 100");
             assert.ok(typeof ckBurn === 'bigint', "CK burn should be a bigint");
         });
     });