diff --git a/apps/extension/src/background/approvals/service.test.ts b/apps/extension/src/background/approvals/service.test.ts
index f8a496cc72..ad85a8e490 100644
--- a/apps/extension/src/background/approvals/service.test.ts
+++ b/apps/extension/src/background/approvals/service.test.ts
@@ -1,7 +1,21 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
+import * as borsh from "@dao-xyz/borsh";
+import { TxType } from "@namada/shared";
+import {
+  AccountType,
+  EthBridgeTransferMsgValue,
+  IbcTransferMsgValue,
+  SubmitBondMsgValue,
+  SubmitUnbondMsgValue,
+  SubmitVoteProposalMsgValue,
+  SubmitWithdrawMsgValue,
+  TokenInfo,
+  TransferMsgValue,
+} from "@namada/types";
 import { KeyRingService, TabStore } from "background/keyring";
 import { LedgerService } from "background/ledger";
 import { VaultService } from "background/vault";
+import BigNumber from "bignumber.js";
 import createMockInstance from "jest-create-mock-instance";
 import { KVStoreMock } from "test/init";
 import { ApprovalsService } from "./service";
@@ -11,17 +25,24 @@ jest.mock("webextension-polyfill", () => ({
   runtime: {
     getURL: () => "url",
   },
+  windows: {
+    create: jest.fn(),
+  },
 }));
 
 describe.only("approvals service", () => {
   let service: ApprovalsService;
   let keyRingService: jest.Mocked<KeyRingService>;
   let dataStore: KVStoreMock<string>;
+  let txStore: KVStoreMock<TxStore>;
+
+  afterEach(() => {
+    jest.restoreAllMocks();
+  });
 
   beforeEach(() => {
     jest.clearAllMocks();
-
-    const txStore = new KVStoreMock<TxStore>("TxStore");
+    txStore = new KVStoreMock<TxStore>("TxStore");
     dataStore = new KVStoreMock<string>("DataStore");
     const connectedTabsStore = new KVStoreMock<TabStore[]>("TabStore");
     const approvedOriginsStore = new KVStoreMock<ApprovedOriginsStore>(
@@ -185,4 +206,288 @@ describe.only("approvals service", () => {
       expect(service.rejectSignature(tabId, "msgId")).rejects.toBeDefined();
     });
   });
+
+  const txTypes = [
+    [TxType.Bond, "getParamsBond"],
+    [TxType.Unbond, "getParamsUnbond"],
+    [TxType.Withdraw, "getParamsWithdraw"],
+    [TxType.Transfer, "getParamsTransfer"],
+    [TxType.IBCTransfer, "getParamsIbcTransfer"],
+    [TxType.EthBridgeTransfer, "getParamsEthBridgeTransfer"],
+    [TxType.VoteProposal, "getParamsVoteProposal"],
+  ] as const;
+
+  describe("approveTx", () => {
+    it.each(txTypes)("should launch tx", async (type, paramsFn) => {
+      jest.spyOn(ApprovalsService, paramsFn).mockImplementation(() => ({}));
+      jest.spyOn(borsh, "deserialize").mockReturnValue({});
+      jest.spyOn(service as any, "_launchApprovalWindow");
+
+      expect(
+        service.approveTx(type, "", "", AccountType.Mnemonic)
+      ).resolves.not.toBeDefined();
+    });
+  });
+
+  describe("getParamsTransfer", () => {
+    it("should return transfer params", () => {
+      const transferMsgValue = new TransferMsgValue({
+        source: "source",
+        target: "target",
+        token: "token",
+        amount: BigNumber(100),
+        nativeToken: "nativeToken",
+      });
+
+      const txMsgValue = {
+        token: "token",
+        feeAmount: BigNumber(0.5),
+        gasLimit: BigNumber(0.5),
+        chainId: "chainId",
+        publicKey: "publicKey",
+      };
+
+      jest.spyOn(borsh, "deserialize").mockReturnValue(transferMsgValue);
+
+      const params = ApprovalsService.getParamsTransfer(
+        new Uint8Array([]),
+        txMsgValue
+      );
+
+      expect(params).toEqual({
+        source: transferMsgValue.source,
+        target: transferMsgValue.target,
+        tokenAddress: transferMsgValue.token,
+        amount: transferMsgValue.amount.toString(),
+        publicKey: txMsgValue.publicKey,
+      });
+    });
+  });
+
+  describe("getParamsIbcTransfer", () => {
+    it("should return transfer params", () => {
+      const token: TokenInfo = {
+        symbol: "symbol",
+        type: 0,
+        path: 0,
+        coin: "coin",
+        url: "url",
+        address: "address",
+      };
+
+      const transferMsgValue = new IbcTransferMsgValue({
+        source: "source",
+        receiver: "target",
+        token: token,
+        amount: BigNumber(100),
+        portId: "portId",
+        channelId: "channelId",
+      });
+
+      const txMsgValue = {
+        token: "token",
+        feeAmount: BigNumber(0.5),
+        gasLimit: BigNumber(0.5),
+        chainId: "chainId",
+        publicKey: "publicKey",
+      };
+
+      jest.spyOn(borsh, "deserialize").mockReturnValue(transferMsgValue);
+
+      const params = ApprovalsService.getParamsIbcTransfer(
+        new Uint8Array([]),
+        txMsgValue
+      );
+
+      expect(params).toEqual({
+        source: transferMsgValue.source,
+        target: transferMsgValue.receiver,
+        tokenAddress: transferMsgValue.token,
+        amount: transferMsgValue.amount.toString(),
+        publicKey: txMsgValue.publicKey,
+      });
+    });
+  });
+
+  describe("getParamsEthBridgeTransfer", () => {
+    it("should return transfer params", () => {
+      const transferMsgValue = new EthBridgeTransferMsgValue({
+        nut: false,
+        asset: "asset",
+        recipient: "recipient",
+        sender: "sender",
+        amount: BigNumber(100),
+        feeAmount: BigNumber(0.5),
+        feeToken: "feeToken",
+      });
+
+      const txMsgValue = {
+        token: "token",
+        feeAmount: BigNumber(0.5),
+        gasLimit: BigNumber(0.5),
+        chainId: "chainId",
+        publicKey: "publicKey",
+      };
+
+      jest.spyOn(borsh, "deserialize").mockReturnValue(transferMsgValue);
+
+      const params = ApprovalsService.getParamsEthBridgeTransfer(
+        new Uint8Array([]),
+        txMsgValue
+      );
+
+      expect(params).toEqual({
+        source: transferMsgValue.sender,
+        target: transferMsgValue.recipient,
+        tokenAddress: transferMsgValue.asset,
+        amount: transferMsgValue.amount.toString(),
+        publicKey: txMsgValue.publicKey,
+      });
+    });
+  });
+
+  describe("getParamsBond", () => {
+    it("should return bond params", () => {
+      const bondMsgValue = new SubmitBondMsgValue({
+        source: "source",
+        validator: "validator",
+        amount: BigNumber(100),
+        nativeToken: "nativeToken",
+      });
+
+      const txMsgValue = {
+        token: "token",
+        feeAmount: BigNumber(0.5),
+        gasLimit: BigNumber(0.5),
+        chainId: "chainId",
+        publicKey: "publicKey",
+      };
+
+      jest.spyOn(borsh, "deserialize").mockReturnValue(bondMsgValue);
+
+      const params = ApprovalsService.getParamsBond(
+        new Uint8Array([]),
+        txMsgValue
+      );
+
+      expect(params).toEqual({
+        source: bondMsgValue.source,
+        tokenAddress: bondMsgValue.nativeToken,
+        amount: bondMsgValue.amount.toString(),
+        publicKey: txMsgValue.publicKey,
+      });
+    });
+  });
+
+  describe("getParamsUnbond", () => {
+    it("should return unbond params", () => {
+      const unbondMsgValue = new SubmitUnbondMsgValue({
+        source: "source",
+        validator: "validator",
+        amount: BigNumber(100),
+      });
+
+      const txMsgValue = {
+        token: "token",
+        feeAmount: BigNumber(0.5),
+        gasLimit: BigNumber(0.5),
+        chainId: "chainId",
+        publicKey: "publicKey",
+      };
+
+      jest.spyOn(borsh, "deserialize").mockReturnValue(unbondMsgValue);
+
+      const params = ApprovalsService.getParamsUnbond(
+        new Uint8Array([]),
+        txMsgValue
+      );
+
+      expect(params).toEqual({
+        source: unbondMsgValue.source,
+        amount: unbondMsgValue.amount.toString(),
+        publicKey: txMsgValue.publicKey,
+      });
+    });
+  });
+
+  describe("getParamsWithdraw", () => {
+    it("should return withdraw params", () => {
+      const withdrawMsgValue = new SubmitWithdrawMsgValue({
+        source: "source",
+        validator: "validator",
+      });
+
+      const txMsgValue = {
+        token: "token",
+        feeAmount: BigNumber(0.5),
+        gasLimit: BigNumber(0.5),
+        chainId: "chainId",
+        publicKey: "publicKey",
+      };
+
+      jest.spyOn(borsh, "deserialize").mockReturnValue(withdrawMsgValue);
+
+      const params = ApprovalsService.getParamsWithdraw(
+        new Uint8Array([]),
+        txMsgValue
+      );
+
+      expect(params).toEqual({
+        source: withdrawMsgValue.source,
+        validator: withdrawMsgValue.validator,
+        publicKey: txMsgValue.publicKey,
+      });
+    });
+  });
+
+  describe("getParamsVoteProposal", () => {
+    it("should return vote proposal params", () => {
+      const voteProposalMsgValue = new SubmitVoteProposalMsgValue({
+        signer: "singer",
+        proposalId: BigInt(0),
+        vote: "yay",
+      });
+
+      const txMsgValue = {
+        token: "token",
+        feeAmount: BigNumber(0.5),
+        gasLimit: BigNumber(0.5),
+        chainId: "chainId",
+        publicKey: "publicKey",
+      };
+
+      jest.spyOn(borsh, "deserialize").mockReturnValue(voteProposalMsgValue);
+
+      const params = ApprovalsService.getParamsVoteProposal(
+        new Uint8Array([]),
+        txMsgValue
+      );
+
+      expect(params).toEqual({
+        source: voteProposalMsgValue.signer,
+        publicKey: txMsgValue.publicKey,
+      });
+    });
+  });
+
+  describe("rejectTx", () => {
+    it("should clear pending tx", async () => {
+      await service.rejectTx("msgId");
+      jest.spyOn(service as any, "_clearPendingTx");
+
+      expect((service as any)._clearPendingTx).toHaveBeenCalledWith("msgId");
+    });
+  });
+
+  describe("submitTx", () => {
+    it("should call submitFn", async () => {
+      // await txStore.set("msgId", {
+      //   txType: TxType.VoteProposal,
+      //   txMsg: "",
+      //   specificMsg: "",
+      // });
+
+      expect((service as any)._clearPendingTx).toHaveBeenCalledWith("msgId");
+    });
+  });
 });