diff --git a/packages/berajs/src/utils/encoder.test.ts b/packages/berajs/src/utils/encoder.test.ts
new file mode 100644
index 000000000..8b6dbaa9b
--- /dev/null
+++ b/packages/berajs/src/utils/encoder.test.ts
@@ -0,0 +1,25 @@
+import { describe, expect, test } from "@jest/globals";
+import { encrypt, decrypt } from "./encoder";
+
+describe("Encoder Utils", () => {
+  const message = "Hello, World!";
+  const key = "secretkey123";
+
+  test("encrypt should return a non-empty string", () => {
+    const cipherText = encrypt(message, key);
+    expect(typeof cipherText).toBe("string");
+    expect(cipherText.length).toBeGreaterThan(0);
+  });
+
+  test("decrypt should return the original message with 0x prefix", () => {
+    const cipherText = encrypt(message, key);
+    const decryptedMessage = decrypt(cipherText, key);
+    expect(decryptedMessage).toBe(`0x${message}`);
+  });
+
+  test('decrypt should return "0x" for invalid cipher', () => {
+    const invalidCipher = "invalidciphertext";
+    const result = decrypt(invalidCipher, key);
+    expect(result).toBe("0x");
+  });
+});
diff --git a/packages/berajs/src/utils/errorMessages.test.ts b/packages/berajs/src/utils/errorMessages.test.ts
new file mode 100644
index 000000000..5b6d75262
--- /dev/null
+++ b/packages/berajs/src/utils/errorMessages.test.ts
@@ -0,0 +1,17 @@
+import { describe, expect, test } from "@jest/globals";
+
+import { getCustomAppErrorMessages, getErrorMessage } from "./errorMessages";
+
+describe("Error Messages Utils", () => {
+  test("getCustomAppErrorMessages should return correct error message for PERPS", () => {
+    const error = { metaMessages: ["PriceImpactTooHigh"] };
+    const message = getCustomAppErrorMessages(error, "PERPS");
+    expect(message).toBe("This position causes too much price impact.");
+  });
+
+  test("getErrorMessage should return GENERAL_ERROR for unknown error", () => {
+    const error = { unknownKey: "unknownValue" };
+    const message = getErrorMessage(error);
+    expect(message).toBe("Something went wrong. Please try again later.");
+  });
+});
diff --git a/packages/berajs/src/utils/fixedPointEthers.test.ts b/packages/berajs/src/utils/fixedPointEthers.test.ts
new file mode 100644
index 000000000..f68c9e97a
--- /dev/null
+++ b/packages/berajs/src/utils/fixedPointEthers.test.ts
@@ -0,0 +1,33 @@
+import { describe, expect, test } from "@jest/globals";
+import {
+  toQ64,
+  fromQ64,
+  toQ48,
+  fromQ48,
+  toSqrtPrice,
+  fromSqrtPrice,
+} from "./fixedPointEthers";
+import { BigNumber } from "ethers";
+
+describe("Fixed Point Ethers Utils", () => {
+  test("toQ64 and fromQ64 should correctly convert values", () => {
+    const value = 123.456;
+    const q64Value = toQ64(value);
+    const result = fromQ64(q64Value);
+    expect(result).toBeCloseTo(value, 5);
+  });
+
+  test("toQ48 and fromQ48 should correctly convert values", () => {
+    const value = 789.012;
+    const q48Value = toQ48(value);
+    const result = fromQ48(q48Value);
+    expect(result).toBeCloseTo(value, 5);
+  });
+
+  test("toSqrtPrice and fromSqrtPrice should correctly convert values", () => {
+    const price = 10000;
+    const sqrtPrice = toSqrtPrice(price);
+    const result = fromSqrtPrice(BigNumber.from(sqrtPrice));
+    expect(result).toBeCloseTo(price, 5);
+  });
+});
diff --git a/packages/berajs/src/utils/formatAmountSmall.test.ts b/packages/berajs/src/utils/formatAmountSmall.test.ts
new file mode 100644
index 000000000..34a276545
--- /dev/null
+++ b/packages/berajs/src/utils/formatAmountSmall.test.ts
@@ -0,0 +1,27 @@
+import { describe, expect, test } from "@jest/globals";
+
+import { formatAmountSmall } from "./formatAmountSmall";
+
+describe("formatAmountSmall", () => {
+  test("should return isSmall as false and numericValue as 0 for NaN or zero", () => {
+    expect(formatAmountSmall("abc")).toEqual({
+      isSmall: false,
+      numericValue: 0,
+    });
+    expect(formatAmountSmall(0)).toEqual({ isSmall: false, numericValue: 0 });
+  });
+
+  test("should return isSmall as true for values less than 0.01", () => {
+    expect(formatAmountSmall(0.005)).toEqual({
+      isSmall: true,
+      numericValue: 0.01,
+    });
+  });
+
+  test("should return isSmall as false for values greater than or equal to 0.01", () => {
+    expect(formatAmountSmall(0.02)).toEqual({
+      isSmall: false,
+      numericValue: 0.02,
+    });
+  });
+});
diff --git a/packages/berajs/src/utils/formatNumber.test.ts b/packages/berajs/src/utils/formatNumber.test.ts
new file mode 100644
index 000000000..462195ba0
--- /dev/null
+++ b/packages/berajs/src/utils/formatNumber.test.ts
@@ -0,0 +1,18 @@
+import { describe, expect, test } from "@jest/globals";
+
+import { formatNumber } from "./formatNumber";
+
+describe("formatNumber", () => {
+  test("should format numbers with default 8 decimals", () => {
+    expect(formatNumber(1234.56789)).toBe("1234.56789");
+  });
+
+  test("should format numbers with specified decimals", () => {
+    expect(formatNumber(1234.56789, 2)).toBe("1234.57");
+  });
+
+  test("should remove trailing zeros", () => {
+    expect(formatNumber(1234.5)).toBe("1234.5");
+    expect(formatNumber(1234.0)).toBe("1234");
+  });
+});
diff --git a/packages/berajs/src/utils/formatUsd.test.ts b/packages/berajs/src/utils/formatUsd.test.ts
new file mode 100644
index 000000000..d79b533fb
--- /dev/null
+++ b/packages/berajs/src/utils/formatUsd.test.ts
@@ -0,0 +1,18 @@
+import { describe, expect, test } from "@jest/globals";
+
+import { formatUsd } from "./formatUsd";
+
+describe("formatUsd with en-US locale", () => {
+  test("should format numbers as USD currency", () => {
+    expect(formatUsd(1234.56)).toBe("$1,234.56");
+  });
+
+  test("should format strings as USD currency", () => {
+    expect(formatUsd("1234.56")).toBe("$1,234.56");
+  });
+
+  test("should return $0.00 for invalid inputs", () => {
+    expect(formatUsd("abc")).toBe("$0.00");
+    expect(formatUsd({} as any)).toBe("$0.00");
+  });
+});
diff --git a/packages/berajs/src/utils/handle-native-bera.test.ts b/packages/berajs/src/utils/handle-native-bera.test.ts
new file mode 100755
index 000000000..238f30b5f
--- /dev/null
+++ b/packages/berajs/src/utils/handle-native-bera.test.ts
@@ -0,0 +1,29 @@
+import { describe, expect, test, jest } from "@jest/globals";
+import { handleNativeBera } from './handle-native-bera';
+import { beraTokenAddress, nativeTokenAddress } from '@bera/config';
+import { getAddress } from 'viem';
+
+// From .env
+jest.mock('@bera/config', () => ({
+  beraTokenAddress: '0x7507c1dc16935B82698e4C63f2746A2fCf994dF8',
+  nativeTokenAddress: '0x0000000000000000000000000000000000000000',
+}));
+
+describe('handleNativeBera', () => {
+  test('should return beraTokenAddress if tokenAddress is nativeTokenAddress', () => {
+    const result = handleNativeBera(nativeTokenAddress);
+    expect(result).toBe(getAddress(beraTokenAddress));
+  });
+
+  test('should return the same address if tokenAddress is not nativeTokenAddress', () => {
+    const someOtherAddress = '0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48';
+    const result = handleNativeBera(someOtherAddress);
+    expect(result).toBe(getAddress(someOtherAddress));
+  });
+
+  test('should return the input if it is not a valid address', () => {
+    const invalidAddress = 'invalidAddress';
+    const result = handleNativeBera(invalidAddress);
+    expect(result).toBe(invalidAddress);
+  });
+});
\ No newline at end of file
diff --git a/packages/berajs/src/utils/timeFrame.test.ts b/packages/berajs/src/utils/timeFrame.test.ts
new file mode 100755
index 000000000..2a4024cd6
--- /dev/null
+++ b/packages/berajs/src/utils/timeFrame.test.ts
@@ -0,0 +1,29 @@
+import { describe, expect, test } from "@jest/globals";
+
+import { TimeFrame, getTime, timeFrameToNumber } from "./timeFrame";
+
+describe("TimeFrame Utils", () => {
+  test("should calculate correct time for HOURLY", () => {
+    const currentTime = Math.floor(Date.now() / 1000);
+    const expectedTime = currentTime - timeFrameToNumber[TimeFrame.HOURLY];
+    expect(getTime(TimeFrame.HOURLY)).toBeCloseTo(expectedTime, 1);
+  });
+
+  test("should calculate correct time for WEEKLY", () => {
+    const currentTime = Math.floor(Date.now() / 1000);
+    const expectedTime = currentTime - timeFrameToNumber[TimeFrame.WEEKLY];
+    expect(getTime(TimeFrame.WEEKLY)).toBeCloseTo(expectedTime, 1);
+  });
+
+  test("should calculate correct time for MONTHLY", () => {
+    const currentTime = Math.floor(Date.now() / 1000);
+    const expectedTime = currentTime - timeFrameToNumber[TimeFrame.MONTHLY];
+    expect(getTime(TimeFrame.MONTHLY)).toBeCloseTo(expectedTime, 1);
+  });
+
+  test("should calculate correct time for QUARTERLY", () => {
+    const currentTime = Math.floor(Date.now() / 1000);
+    const expectedTime = currentTime - timeFrameToNumber[TimeFrame.QUARTERLY];
+    expect(getTime(TimeFrame.QUARTERLY)).toBeCloseTo(expectedTime, 1);
+  });
+});