diff --git a/apps/hyperdrive-trading/src/appconfig/chains/supportedChains.ts b/apps/hyperdrive-trading/src/appconfig/chains/supportedChains.ts
index f0b26fd76..75a68531e 100644
--- a/apps/hyperdrive-trading/src/appconfig/chains/supportedChains.ts
+++ b/apps/hyperdrive-trading/src/appconfig/chains/supportedChains.ts
@@ -1,3 +1,3 @@
 export const supportedChainIds = [42069, 31337] as const;
 
-export type SupportedChainId = (typeof supportedChainIds)[number];
+export type SupportedChainId = typeof supportedChainIds[number];
diff --git a/package.json b/package.json
index 1da49cb25..e222ce74b 100644
--- a/package.json
+++ b/package.json
@@ -12,6 +12,8 @@
     "dev": "turbo run dev --parallel --filter=./apps/*",
     "lint": "turbo run lint",
     "lint:packages": "turbo run lint --filter=./packages/*",
+    "test": "turbo run test --filter=./packages/*",
+    "test:run": "turbo run test:run --filter=./packages/*",
     "format": "turbo run format",
     "format:check": "turbo run format:check",
     "postinstall": "husky install"
diff --git a/packages/contract-stub/package.json b/packages/contract-stub/package.json
index 969dbcb8c..b04d12b08 100644
--- a/packages/contract-stub/package.json
+++ b/packages/contract-stub/package.json
@@ -14,8 +14,6 @@
   "scripts": {
     "watch": "parcel watch",
     "build": "parcel build",
-    "test": "vitest run",
-    "test:watch": "vitest",
     "build:typechain": "typechain --target=ethers-v5 src/abis/* --out-dir src/types"
   },
   "dependencies": {
diff --git a/packages/contract-stub/src/stubContract.test.ts b/packages/contract-stub/src/stubContract.test.ts
deleted file mode 100644
index afa344f07..000000000
--- a/packages/contract-stub/src/stubContract.test.ts
+++ /dev/null
@@ -1,82 +0,0 @@
-import { BigNumber, ethers, Wallet } from "ethers";
-import { stubContract } from "./stubContract";
-import { MockProvider } from "@wagmi/connectors/mock";
-import { stub } from "sinon";
-import { ERC20, ERC20__factory } from "src/types";
-import { test, expect } from "vitest";
-import { ApprovalEvent } from "src/types/ERC20";
-
-test("Stubs callStatic methods correctly", async () => {
-  const stubbedContract = setupMockERC20();
-  // should throw an error if stub's resolve value was never set
-  expect(() => stubbedContract.callStatic.decimals()).toThrow();
-
-  stubbedContract.callStatic.decimals.resolves(18);
-  const decimals = await stubbedContract.callStatic.decimals();
-  expect(decimals).toEqual(18);
-});
-
-test("Stubs functions methods correctly", async () => {
-  const stubbedContract = setupMockERC20();
-
-  // should throw an error if stub's resolve value was never set
-  expect(() => stubbedContract.functions.decimals()).toThrow();
-
-  stubbedContract.functions.decimals.resolves([18]);
-  const decimals = await stubbedContract.functions.decimals();
-  expect(decimals).toEqual([18]);
-});
-
-test("Stubs estimateGas methods correctly", async () => {
-  const stubbedContract = setupMockERC20();
-
-  // should throw an error if stub's resolve value was never set
-  expect(() =>
-    stubbedContract.estimateGas.approve(ethers.constants.AddressZero, 100),
-  ).toThrow();
-
-  stubbedContract.estimateGas.approve.resolves(BigNumber.from(555));
-  const gasToBurn100Tokens = await stubbedContract.estimateGas.approve(
-    ethers.constants.AddressZero,
-    100,
-  );
-  expect(gasToBurn100Tokens).toEqual(BigNumber.from(555));
-});
-
-test("Stubs queryFilter correctly", async () => {
-  const stubbedContract = setupMockERC20();
-
-  const filter = stubbedContract.filters.Approval();
-
-  // should throw an error if stub's resolve value was never set
-  expect(() => stubbedContract.queryFilter(filter)).toThrow();
-
-  const getBlockStub = stub().resolves(12345678);
-
-  stubbedContract.queryFilter.resolves([
-    {
-      args: [],
-      getBlock: getBlockStub,
-    },
-  ] as unknown as ApprovalEvent[]);
-  const approvalEvents = await stubbedContract.queryFilter(filter);
-  expect(approvalEvents).toEqual([
-    {
-      args: [],
-      getBlock: getBlockStub,
-    },
-  ]);
-});
-
-function setupMockERC20() {
-  const mockProvider = new MockProvider({
-    chainId: 1,
-    signer: new Wallet(
-      "d1b0c40a9943d53459302ccf9003ef9666b9235dfc3220ea1f0422a886615511",
-    ),
-  });
-
-  return stubContract<ERC20>(
-    ERC20__factory.connect(ethers.constants.AddressZero, mockProvider),
-  );
-}
diff --git a/packages/hyperdrive/package.json b/packages/hyperdrive/package.json
index c9204aa9b..1f709f3e7 100644
--- a/packages/hyperdrive/package.json
+++ b/packages/hyperdrive/package.json
@@ -14,7 +14,9 @@
   },
   "scripts": {
     "watch": "parcel watch",
-    "build": "tsc --noEmit && parcel build --no-cache"
+    "build": "tsc --noEmit && parcel build --no-cache",
+    "test": "vitest",
+    "test:run": "vitest run"
   },
   "devDependencies": {
     "@hyperdrive/eslint-config": "*",
diff --git a/packages/hyperdrive/src/test/multiplyBigInt.test.ts b/packages/hyperdrive/src/test/multiplyBigInt.test.ts
new file mode 100644
index 000000000..1dab0b27c
--- /dev/null
+++ b/packages/hyperdrive/src/test/multiplyBigInt.test.ts
@@ -0,0 +1,29 @@
+import { multiplyBigInt } from "src/base/multiplyBigInt";
+import { expect, test } from "vitest";
+
+test("multiplyBigInt: simple multiplication", async () => {
+  const result = multiplyBigInt([500n, 50n], 2);
+  expect(result).toEqual(250n);
+});
+
+test("multiplyBigInt: when values array is empty", async () => {
+  const result = multiplyBigInt([], 2);
+  expect(result).toEqual(0n);
+});
+
+test("multiplyBigInt: single value input", async () => {
+  const result = multiplyBigInt([10n], 2);
+  expect(result).toEqual(10n);
+});
+
+test("multiplyBigInt: multiplying with zero", async () => {
+  const result = multiplyBigInt([500n, 0n], 2);
+  expect(result).toEqual(0n);
+});
+
+test("multiplyBigInt: multiplying multiple bigint values", async () => {
+  // Test case: multiplying three values
+  // Let's say our values are [2000n, 300n, 50n] and for 2 decimals, this translates to 20.00 * 3.00 * 0.50 = 30.00
+  const result = multiplyBigInt([2000n, 300n, 50n], 2);
+  expect(result).toEqual(3000n);
+});
diff --git a/packages/hyperdrive/vite.config.ts b/packages/hyperdrive/vite.config.ts
new file mode 100644
index 000000000..ca090075b
--- /dev/null
+++ b/packages/hyperdrive/vite.config.ts
@@ -0,0 +1,12 @@
+import { defineConfig } from "vitest/config";
+import type { UserConfig as VitestUserConfigInterface } from "vitest/config";
+
+const vitestConfig: VitestUserConfigInterface = {
+  test: {
+    // https://vitest.dev/config
+  },
+};
+
+export default defineConfig({
+  test: vitestConfig.test,
+});
diff --git a/turbo.json b/turbo.json
index ad085f1a8..988757ef5 100644
--- a/turbo.json
+++ b/turbo.json
@@ -16,6 +16,14 @@
       "cache": false
     },
     "format": { "outputs": [] },
-    "format:check": { "outputs": [] }
+    "format:check": { "outputs": [] },
+    "test": {
+      "dependsOn": ["build"],
+      "inputs": ["test/**/*.ts", "test/**/*.tsx"]
+    },
+    "test:run": {
+      "dependsOn": ["build"],
+      "inputs": ["test/**/*.ts", "test/**/*.tsx"]
+    }
   }
 }