diff --git a/tests/hardhat_tests.js b/tests/hardhat_tests.js
new file mode 100644
index 0000000..ffafe11
--- /dev/null
+++ b/tests/hardhat_tests.js
@@ -0,0 +1,147 @@
+const { expect } = require("chai");
+const { ethers } = require("hardhat");
+const { BigNumber } = require("@ethersproject/bignumber");
+
+describe("Modifier Contract", function () {
+  let accOwner;
+  let accGuest;
+  let accAnother;
+
+  let ctrct;
+  let erc;
+
+  async function InitContracts() {
+    [accOwner, accGuest, accAnother] = await ethers.getSigners();
+    const Transfer = await ethers.getContractFactory("ModifiedTransfer", accOwner);
+    ctrct = await Transfer.connect(accOwner).deploy();
+    await ctrct.deployed();
+  }
+
+  async function InitERC() {
+    const ERC = await ethers.getContractFactory("ERC20token", accOwner);
+    erc = await ERC.connect(accOwner).deploy();
+    await erc.deployed();
+  }
+
+  describe("Base", async function () {
+    beforeEach(async function() {
+      await InitContracts();
+      await InitERC();
+    });
+
+    it("Success test Contract deployed", async function () {
+      expect(ctrct.address).to.be.properAddress;
+      expect(erc.address).to.be.properAddress;
+    });
+
+  });
+
+  describe("Owner", async function () {
+    beforeEach(async function() {
+      await InitContracts();
+      await InitERC();
+    });
+
+    it("Check initial owner", async function () {
+      const owner = await ctrct.getOwner()
+      expect(owner).to.eq(accOwner.address);
+    });
+
+    it("Set Owner success by owner", async function () {
+      const new_owner = await ctrct.setOwner(accGuest.address)
+      const owner = await ctrct.getOwner()
+      expect(owner).to.eq(accGuest.address);
+    });
+
+    it("Set Owner failed by another account r", async function () {
+      await expect(
+        ctrct.connect(accGuest).setOwner(accGuest.address)
+      ).to.be.revertedWith("Caller is not owner");
+    });
+
+  });
+
+  describe("checkOfWhiteList --- not working for Private function. Neew make Public for tests", async function () {
+    beforeEach(async function() {
+      await InitContracts();
+    });
+
+    it("False for empty list", async function () {
+      const result = await ctrct.connect(accGuest).checkOfWhiteList(accGuest.address)
+      expect(result).to.eq(false);
+    });
+  });
+
+  describe("addWhiteList", async function () {
+    beforeEach(async function() {
+      await InitContracts();
+    });
+
+    it("Ssuccess by owner", async function () {
+      await ctrct.connect(accOwner).addWhiteList(accGuest.address)
+      const result = await ctrct.connect(accGuest).checkOfWhiteList(accGuest.address)
+      expect(result).to.eq(true);
+    });
+
+    it("Failed by guest", async function () {
+      await expect(
+        ctrct.connect(accGuest).addWhiteList(accGuest.address)
+      ).to.be.revertedWith("Caller is not owner");
+    });
+  });
+
+  describe("deleteFromWhiteList", async function () {
+    beforeEach(async function() {
+      await InitContracts();
+      const tx = await ctrct.connect(accOwner).addWhiteList(accGuest.address);
+      await tx.wait();
+
+      const result = await ctrct.connect(accOwner).checkOfWhiteList(accGuest.address)
+      expect(result).to.eq(true);      
+    });
+
+    it("Success by owner", async function () {
+      const tx =  await ctrct.connect(accOwner).deleteFromWhiteList(accGuest.address)
+      await tx.wait();
+
+      const result = await ctrct.connect(accOwner).checkOfWhiteList(accGuest.address)
+      expect(result).to.eq(false);
+    });
+
+    it("Failed by guest", async function () {
+      await expect(
+        ctrct.connect(accGuest).deleteFromWhiteList(accGuest.address)
+      ).to.be.revertedWith("Caller is not owner");
+    });
+  });
+
+  describe("proxyToken", async function () {
+    const amount = 10
+    beforeEach(async function() {
+      await InitContracts();
+      await InitERC();
+      const tx = await ctrct.connect(accOwner).addWhiteList(accGuest.address);
+      await tx.wait();   
+      
+      const tx2 = await erc.connect(accOwner).approve( ctrct.address, amount );
+      await tx2.wait();
+    });
+
+    it("Success by owner", async function () {
+      const tx =  await ctrct.connect(accOwner).proxyToken(erc.address, accGuest.address, amount)
+      await tx.wait();
+
+    });
+
+    it("Failed by not whitelisted", async function () {
+      const tx =  await ctrct.connect(accOwner).deleteFromWhiteList(accGuest.address)
+      await tx.wait();
+
+      await expect(
+        ctrct.connect(accOwner).proxyToken(erc.address, accGuest.address, amount)
+      ).to.be.revertedWith("Not WhiteList");
+    });
+  });
+
+});
+
diff --git a/tests/readme.txt b/tests/readme.txt
new file mode 100644
index 0000000..335d677
--- /dev/null
+++ b/tests/readme.txt
@@ -0,0 +1,3 @@
+Тесты указаны в качестве примера. 
+Для корректного выполнения необходимо запускать в Hardhat.
+Дополнительно для корреткного выполнения тестов требуется сделать публичным функцию checkOfWhiteList
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