Create DAppContract.test.js

smart-contracts/test/DAppContract.test.js

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+const DAppContract = artifacts.require("DAppContract");
+
+contract("DAppContract", (accounts) => {
+    let dAppContract;
+    const [owner, user1] = accounts;
+
+    beforeEach(async () => {
+        dAppContract = await DAppContract.new("My DApp");
+    });
+
+    it("should set the correct name", async () => {
+        const name = await dAppContract.name();
+        assert.equal(name, "My DApp", "The name is not set correctly");
+    });
+
+    it("should allow users to deposit funds", async () => {
+        const depositAmount = web3.utils.toWei("1", "ether");
+        await dAppContract.deposit({ from: user1, value: depositAmount });
+
+        const balance = await dAppContract.balances(user1);
+        assert.equal(balance.toString(), depositAmount, "The balance is not updated correctly");
+    });
+
+    it("should allow users to withdraw funds", async () => {
+        const depositAmount = web3.utils.toWei("1", "ether");
+        await dAppContract.deposit({ from: user1, value: depositAmount });
+
+        await dAppContract.withdraw(depositAmount, { from: user1 });
+        const balance = await dAppContract.balances(user1);
+        assert.equal(balance.toString(), "0", "The balance should be zero after withdrawal");
+    });
+
+    it("should not allow withdrawal of more than balance", async () => {
+        try {
+            await dAppContract.withdraw(web3.utils.toWei("1", "ether"), { from: user1 });
+            assert.fail("Withdrawal should have failed");
+        } catch (error) {
+            assert(error.message.includes("Insufficient balance"), "Expected 'Insufficient balance' error");
+        }
+    });
+});