diff --git a/tests/utils/delegations/createStakingTx.test.ts b/tests/utils/delegations/createStakingTx.test.ts
index 773b616c..45a94929 100644
--- a/tests/utils/delegations/createStakingTx.test.ts
+++ b/tests/utils/delegations/createStakingTx.test.ts
@@ -4,10 +4,12 @@ import { createStakingTx } from "@/utils/delegations/signStakingTx";
 
 import { DEFAULT_TEST_FEE_RATE, testingNetworks } from "../../helper";
 
-describe("utils/delegations/createStakingTx", () => {
-  initBTCCurve();
-  testingNetworks.forEach(({ network, dataGenerator: dataGen }) => {
-    [true, false].forEach((isFixed) => {
+initBTCCurve();
+
+describe.each(testingNetworks)(
+  "utils/delegations/createStakingTx",
+  ({ network, dataGenerator: dataGen }) => {
+    describe.each([true, false])("isFixed %s", (isFixed) => {
       const randomFpKeys = dataGen.generateRandomKeyPair();
       const randomStakerKeys = dataGen.generateRandomKeyPair();
       const feeRate = DEFAULT_TEST_FEE_RATE;
@@ -205,5 +207,5 @@ describe("utils/delegations/createStakingTx", () => {
         });
       }
     });
-  });
-});
+  },
+);
diff --git a/tests/utils/delegations/fee.test.ts b/tests/utils/delegations/fee.test.ts
index 6afc0adf..b1a46b82 100644
--- a/tests/utils/delegations/fee.test.ts
+++ b/tests/utils/delegations/fee.test.ts
@@ -2,8 +2,9 @@ import { txFeeSafetyCheck } from "@/utils/delegations/fee";
 
 import { testingNetworks } from "../../helper";
 
-describe("txFeeSafetyCheck", () => {
-  testingNetworks.map(({ networkName, dataGenerator }) => {
+describe.each(testingNetworks)(
+  "txFeeSafetyCheck",
+  ({ networkName, dataGenerator }) => {
     const feeRate = dataGenerator.generateRandomFeeRates();
     const globalParams = dataGenerator.generateGlobalPramsVersions(
       dataGenerator.getRandomIntegerBetween(1, 10),
@@ -17,6 +18,7 @@ describe("txFeeSafetyCheck", () => {
       randomParam.activationHeight + 1,
     );
     const tx = signedPsbt.extractTransaction();
+
     describe(`on ${networkName} - `, () => {
       test("should not throw an error if the estimated fee is within the acceptable range", () => {
         let estimatedFee = (tx.virtualSize() * feeRate) / 2 + 1;
@@ -58,5 +60,5 @@ describe("txFeeSafetyCheck", () => {
         }).not.toThrow();
       });
     });
-  });
-});
+  },
+);
diff --git a/tests/utils/delegations/signStakingTx.test.ts b/tests/utils/delegations/signStakingTx.test.ts
index 8b39960d..23b2d884 100644
--- a/tests/utils/delegations/signStakingTx.test.ts
+++ b/tests/utils/delegations/signStakingTx.test.ts
@@ -1,10 +1,3 @@
-import { initBTCCurve } from "btc-staking-ts";
-
-import { signStakingTx } from "@/utils/delegations/signStakingTx";
-
-import { DEFAULT_TEST_FEE_RATE, testingNetworks } from "../../helper";
-
-// Mock the signPsbtTransaction function
 jest.mock("@/app/common/utils/psbt", () => ({
   signPsbtTransaction: jest.fn(),
 }));
@@ -12,12 +5,16 @@ jest.mock("@/utils/delegations/fee", () => ({
   txFeeSafetyCheck: jest.fn().mockReturnValue(undefined),
 }));
 
-describe("utils/delegations/signStakingTx", () => {
-  initBTCCurve();
-  testingNetworks.forEach(({ network, dataGenerator: dataGen }) => {
+import { signPsbtTransaction } from "@/app/common/utils/psbt";
+import { signStakingTx } from "@/utils/delegations/signStakingTx";
+
+import { DEFAULT_TEST_FEE_RATE, testingNetworks } from "../../helper";
+
+describe.each(testingNetworks)(
+  "txFeeSafetyCheck",
+  ({ network, dataGenerator: dataGen }) => {
     const randomFpKeys = dataGen.generateRandomKeyPair();
     const randomUserKeys = dataGen.generateRandomKeyPair();
-    const feeRate = DEFAULT_TEST_FEE_RATE;
     const randomParam = dataGen.generateRandomGlobalParams(true);
     const randomStakingAmount = dataGen.getRandomIntegerBetween(
       randomParam.minStakingAmountSat,
@@ -31,15 +28,12 @@ describe("utils/delegations/signStakingTx", () => {
       dataGen.getAddressAndScriptPubKey(
         dataGen.generateRandomKeyPair().publicKey,
       ).taproot;
-
     const randomInputUTXOs = dataGen.generateRandomUTXOs(
       randomStakingAmount + Math.floor(Math.random() * 100000000),
       Math.floor(Math.random() * 10) + 1,
       scriptPubKey,
     );
     const txHex = dataGen.generateRandomTxId();
-
-    // mock the btcWallet
     const btcWallet = {
       signPsbt: jest.fn(),
       getWalletProviderName: jest.fn(),
@@ -47,15 +41,9 @@ describe("utils/delegations/signStakingTx", () => {
     };
 
     it("should successfully sign a staking transaction", async () => {
-      // Import the mock function
-      const { signPsbtTransaction } = require("@/app/common/utils/psbt");
-      signPsbtTransaction.mockImplementationOnce(() => {
-        return async () => {
-          return {
-            toHex: () => txHex,
-          };
-        };
-      });
+      (signPsbtTransaction as any).mockImplementationOnce(() => async () => ({
+        toHex: () => txHex,
+      }));
 
       const result = await signStakingTx(
         btcWallet as any,
@@ -66,7 +54,7 @@ describe("utils/delegations/signStakingTx", () => {
         network,
         randomTaprootAddress,
         randomUserKeys.noCoordPublicKey,
-        feeRate,
+        DEFAULT_TEST_FEE_RATE,
         randomInputUTXOs,
       );
 
@@ -79,12 +67,8 @@ describe("utils/delegations/signStakingTx", () => {
     });
 
     it("should throw an error when signing a staking transaction", async () => {
-      // Import the mock function
-      const { signPsbtTransaction } = require("@/app/common/utils/psbt");
-      signPsbtTransaction.mockImplementationOnce(() => {
-        return async () => {
-          throw new Error("signing error");
-        };
+      (signPsbtTransaction as any).mockImplementationOnce(() => async () => {
+        throw new Error("signing error");
       });
 
       try {
@@ -97,7 +81,7 @@ describe("utils/delegations/signStakingTx", () => {
           network,
           randomTaprootAddress,
           randomUserKeys.noCoordPublicKey,
-          feeRate,
+          DEFAULT_TEST_FEE_RATE,
           randomInputUTXOs,
         );
       } catch (error: any) {
@@ -105,5 +89,5 @@ describe("utils/delegations/signStakingTx", () => {
         expect(error.message).toBe("signing error");
       }
     });
-  });
-});
+  },
+);
diff --git a/tests/utils/delegations/signUnbondingTx.test.ts b/tests/utils/delegations/signUnbondingTx.test.ts
index 7969510c..0403e2eb 100644
--- a/tests/utils/delegations/signUnbondingTx.test.ts
+++ b/tests/utils/delegations/signUnbondingTx.test.ts
@@ -35,9 +35,7 @@ describe("signUnbondingTx", () => {
     randomStakingTxHeight,
     stakerKeys,
   );
-
   const signedPsbtTx = signedPsbt.extractTransaction();
-
   const mockedDelegationApi = [
     {
       stakingTxHashHex: randomTxId,
diff --git a/tests/utils/globalParams.test.ts b/tests/utils/globalParams.test.ts
index 720301b6..dceae9dd 100644
--- a/tests/utils/globalParams.test.ts
+++ b/tests/utils/globalParams.test.ts
@@ -102,8 +102,11 @@ describe("globalParams", () => {
     expect(result.isApprochingNextVersion).toBeFalsy();
   });
 
-  it("should return correct values for params version that are not first or last", () => {
-    for (let index = 1; index < globalParams.length - 2; index++) {
+  describe("should return correct values for params version that are not first or last", () => {
+    const globalParams = dataGenerator.generateGlobalPramsVersions(10);
+    const paramIndexes = globalParams.map((_, i) => i).slice(1, -1);
+
+    it.each(paramIndexes)("param #%i", (index) => {
       const param = globalParams[index];
       // before approaching
       const lastConfirmationDepth = globalParams[index - 1].confirmationDepth;
@@ -131,6 +134,6 @@ describe("globalParams", () => {
       expect(result.currentVersion).toEqual(param);
       expect(result.nextVersion).toEqual(globalParams[index + 1]);
       expect(result.isApprochingNextVersion).toBeFalsy();
-    }
+    });
   });
 });