diff --git a/package.json b/package.json
index 798c685..12f84a4 100644
--- a/package.json
+++ b/package.json
@@ -51,20 +51,27 @@
   },
   "devDependencies": {
     "@openeth/truffle-typings": "0.0.6",
-    "@types/chai": "^4.3.1",
     "@types/eth-sig-util": "2.1.0",
     "@types/mocha": "^9.1.1",
+    "@types/sinon": "^10.0.13",
+    "@types/sinon-chai": "^3.2.8",
+    "@types/chai": "^4.3.1",
+    "@types/chai-as-promised": "^7.1.5",
     "@types/node": "~13.13.4",
     "@types/semver": "~7.3.4",
     "@typescript-eslint/eslint-plugin": "~4.28.3",
     "@typescript-eslint/parser": "~4.28.3",
     "chai": "^4.3.6",
+    "chai-as-promised": "^7.1.1",
     "eslint": "~7.30.0",
     "husky": "~6.0.0",
     "mocha": "^10.0.0",
     "prettier": "2.3.0",
+    "sinon": "^14.0.0",
+    "sinon-chai": "^3.7.0",
     "ts-loader": "~9.2.3",
     "ts-node": "8.6.2",
+    "ts-sinon": "^2.0.2",
     "typescript": "4.3.5",
     "webpack": "~5.43.0",
     "webpack-cli": "~4.7.2",
diff --git a/src/ContractInteractor.ts b/src/ContractInteractor.ts
index 34545e1..aa29c3c 100644
--- a/src/ContractInteractor.ts
+++ b/src/ContractInteractor.ts
@@ -877,6 +877,17 @@ export default class ContractInteractor {
             `No receipt found for this transaction ${transactionHash}`
         );
     }
+
+    async verifyForwarder(
+        suffixData: string,
+        request: RelayRequest,
+        signature: string
+    ): Promise<void> {
+        const forwarder = await this._createForwarder(
+            request.relayData.callForwarder
+        );
+        await forwarder.verify(suffixData, request.request, signature);
+    }
 }
 
 /**
diff --git a/test/ContractInteractor.test.ts b/test/ContractInteractor.test.ts
new file mode 100644
index 0000000..0ad1f52
--- /dev/null
+++ b/test/ContractInteractor.test.ts
@@ -0,0 +1,199 @@
+import sinon, { stubInterface } from 'ts-sinon';
+import { expect, use, assert } from 'chai';
+import chaiAsPromised from 'chai-as-promised';
+import sinonChai from 'sinon-chai';
+import { IForwarderInstance } from '@rsksmart/rif-relay-contracts/types/truffle-contracts';
+import {
+    constants,
+    ContractInteractor,
+    EnvelopingConfig,
+    Web3Provider
+} from '../src';
+import {
+    ForwardRequest,
+    RelayData,
+    RelayRequest
+} from '@rsksmart/rif-relay-contracts';
+
+use(sinonChai);
+use(chaiAsPromised);
+
+const GAS_PRICE_PERCENT = 0; //
+const MAX_RELAY_NONCE_GAP = 3;
+const DEFAULT_RELAY_TIMEOUT_GRACE_SEC = 1800;
+const DEFAULT_LOOKUP_WINDOW_BLOCKS = 60000;
+const DEFAULT_CHAIN_ID = 33;
+
+describe('ContractInteractor', () => {
+    const defaultConfig: EnvelopingConfig = {
+        preferredRelays: [],
+        onlyPreferredRelays: false,
+        relayLookupWindowParts: 1,
+        relayLookupWindowBlocks: DEFAULT_LOOKUP_WINDOW_BLOCKS,
+        gasPriceFactorPercent: GAS_PRICE_PERCENT,
+        minGasPrice: 60000000, // 0.06 GWei
+        maxRelayNonceGap: MAX_RELAY_NONCE_GAP,
+        sliceSize: 3,
+        relayTimeoutGrace: DEFAULT_RELAY_TIMEOUT_GRACE_SEC,
+        methodSuffix: '',
+        jsonStringifyRequest: false,
+        chainId: DEFAULT_CHAIN_ID,
+        relayHubAddress: constants.ZERO_ADDRESS,
+        deployVerifierAddress: constants.ZERO_ADDRESS,
+        relayVerifierAddress: constants.ZERO_ADDRESS,
+        forwarderAddress: constants.ZERO_ADDRESS,
+        smartWalletFactoryAddress: constants.ZERO_ADDRESS,
+        logLevel: 0,
+        clientId: '1'
+    };
+    let mockWeb3Provider: Web3Provider;
+    let contractInteractor: ContractInteractor;
+
+    before(() => {
+        mockWeb3Provider = stubInterface<Web3Provider>();
+        contractInteractor = new ContractInteractor(
+            mockWeb3Provider,
+            defaultConfig
+        );
+    });
+
+    describe('verifyForwarder', () => {
+        let _createForwarderStub: sinon.SinonStub;
+        let fakeIForwarderInstance: sinon.SinonStubbedInstance<IForwarderInstance> &
+            IForwarderInstance;
+        const fakeSuffixData = 'fakeSuffix';
+        const fakeRelayRequest: RelayRequest = {
+            request: {
+                to: 'fake_address',
+                data: 'fake_data',
+                gas: '1'
+            } as ForwardRequest,
+            relayData: {
+                gasPrice: '0',
+                callForwarder: 'fake_address'
+            } as RelayData
+        };
+        const fakeSignature = 'fake_signature';
+
+        before(() => {
+            fakeIForwarderInstance = stubInterface<IForwarderInstance>();
+            _createForwarderStub = sinon
+                .stub(contractInteractor, '_createForwarder')
+                .callsFake(() => Promise.resolve(fakeIForwarderInstance));
+        });
+
+        it('should verify EOA and call once _createForwarder', async () => {
+            await expect(
+                contractInteractor.verifyForwarder(
+                    fakeSuffixData,
+                    fakeRelayRequest,
+                    fakeSignature
+                )
+            ).to.eventually.be.undefined;
+            expect(contractInteractor._createForwarder).to.have.been.calledOnce;
+        });
+
+        it('should fail if EOA is not the owner', async () => {
+            const error = new TypeError(
+                'VM Exception while processing transaction: revert Not the owner of the SmartWallet'
+            );
+            fakeIForwarderInstance.verify.throwsException(error);
+            await assert.isRejected(
+                contractInteractor.verifyForwarder(
+                    fakeSuffixData,
+                    fakeRelayRequest,
+                    fakeSignature
+                ),
+                error.message
+            );
+        });
+
+        it('should fail if nonce mismatch', async () => {
+            const error = new TypeError(
+                'VM Exception while processing transaction: revert nonce mismatch'
+            );
+            fakeIForwarderInstance.verify.throwsException(error);
+            await assert.isRejected(
+                contractInteractor.verifyForwarder(
+                    fakeSuffixData,
+                    fakeRelayRequest,
+                    fakeSignature
+                ),
+                error.message
+            );
+        });
+
+        it('should fail if signature mismatch', async () => {
+            const error = new TypeError(
+                'VM Exception while processing transaction: revert Signature mismatch'
+            );
+            fakeIForwarderInstance.verify.throwsException(error);
+            await assert.isRejected(
+                contractInteractor.verifyForwarder(
+                    fakeSuffixData,
+                    fakeRelayRequest,
+                    fakeSignature
+                ),
+                error.message
+            );
+        });
+
+        it('should fail if suffixData is null', async () => {
+            const error = new TypeError(
+                "Cannot read properties of null (reading 'substring')"
+            );
+            fakeIForwarderInstance.verify.throwsException(error);
+            await assert.isRejected(
+                contractInteractor.verifyForwarder(
+                    null,
+                    fakeRelayRequest,
+                    fakeSignature
+                ),
+                error.message
+            );
+        });
+
+        it('should fail if RelayRequest is null', async () => {
+            const error = new TypeError(
+                "Cannot read properties of null (reading 'relayData')"
+            );
+            fakeIForwarderInstance.verify.throwsException(error);
+            await assert.isRejected(
+                contractInteractor.verifyForwarder(
+                    fakeSuffixData,
+                    null,
+                    fakeSignature
+                ),
+                error.message
+            );
+        });
+
+        it('should fail if Signature is null', async () => {
+            const error = new TypeError(
+                "Cannot read properties of null (reading 'length')"
+            );
+            fakeIForwarderInstance.verify.throwsException(error);
+            await assert.isRejected(
+                contractInteractor.verifyForwarder(
+                    fakeSuffixData,
+                    fakeRelayRequest,
+                    null
+                ),
+                error.message
+            );
+        });
+
+        it('should fail if callForwarder is null', async () => {
+            _createForwarderStub.restore();
+            fakeRelayRequest.relayData.callForwarder = null;
+            await assert.isRejected(
+                contractInteractor.verifyForwarder(
+                    fakeSuffixData,
+                    fakeRelayRequest,
+                    fakeSignature
+                ),
+                'Invalid address passed to IForwarder.at(): null'
+            );
+        });
+    });
+});