diff --git a/src/Crowdfund.sol b/src/Crowdfund.sol
index abbc3d8..7305697 100644
--- a/src/Crowdfund.sol
+++ b/src/Crowdfund.sol
@@ -156,4 +156,13 @@ contract Crowdfund {
     ) external view returns (Campaign memory) {
         return campaigns[campaignId];
     }
+
+    /// @notice Gets the amount raised for a specific campaign.
+    /// @param campaignId The ID of the campaign.
+    /// @return The amount raised for the campaign.
+    function getCampaignAmountRaised(
+        uint campaignId
+    ) external view returns (uint) {
+        return campaigns[campaignId].amountRaised;
+    }
 }
diff --git a/test/Crowdfund.t.sol b/test/Crowdfund.t.sol
index 6f72c12..d795a78 100644
--- a/test/Crowdfund.t.sol
+++ b/test/Crowdfund.t.sol
@@ -9,36 +9,86 @@ contract CrowdfundTest is Test {
     address fakeUser = vm.addr(1);
 
     function setUp() public {
+        vm.deal(fakeUser, 1 ether);
         crowdfund = new Crowdfund();
     }
 
-    function test_IsInitializedCorrectly() public view {
-        assertEq(crowdfund.getTotalCampaigns(), 0);
-        assertEq(crowdfund.getTotalFunding(), 0);
-        assertEq(crowdfund.getUserCampaigns(fakeUser).length, 0);
-    }
-
-    function test_CanCreateCampaign() public {
-        vm.deal(fakeUser, 1 ether);
-
+    function newCampaign() public returns (uint campaignId) {
         string memory title = "Test Campaign";
         string memory description = "This is a test campaign.";
         uint goal = 1 ether;
         uint deadline = 1 minutes;
 
         vm.prank(fakeUser);
-        uint campaignId = crowdfund.createCampaign(
+        campaignId = crowdfund.createCampaign(
             title,
             description,
             goal,
             deadline
         );
-        
+    }
+
+    function test_IsInitializedCorrectly() public view {
+        assertEq(crowdfund.getTotalCampaigns(), 0);
+        assertEq(crowdfund.getTotalFunding(), 0);
+        assertEq(crowdfund.getUserCampaigns(fakeUser).length, 0);
+    }
+
+    function test_CanCreateCampaign() public {
+        uint campaignId = newCampaign();
+        uint[] memory userCampaigns = crowdfund.getUserCampaigns(fakeUser);
 
         assertEq(campaignId, 0);
         assertEq(crowdfund.getTotalCampaigns(), 1);
         assertEq(crowdfund.getTotalFunding(), 0);
-        // assertEq(crowdfund.getUserCampaigns(fakeUser).length, 1);
-        // console.log(crowdfund.getUserCampaigns(fakeUser));
+        assertEq(userCampaigns.length, 1);
+    }
+
+    function test_CanDonateToCampaign() public {
+        uint campaignId = newCampaign();
+        uint amount = 10 ether;
+        uint amountToDonate = 1 ether;
+
+        address fakeDonor1 = vm.addr(2);
+        address fakeDonor2 = vm.addr(3);
+
+        vm.deal(fakeDonor1, amount);
+        vm.deal(fakeDonor2, amount);
+
+        vm.prank(fakeDonor1);
+        crowdfund.donateToCampaign{value: amountToDonate}(campaignId);
+
+        vm.prank(fakeDonor2);
+        crowdfund.donateToCampaign{value: amountToDonate}(campaignId);
+
+        assertEq(crowdfund.getTotalFunding(), amountToDonate * 2);
+        assertEq(
+            crowdfund.getCampaignAmountRaised(campaignId),
+            amountToDonate * 2
+        );
+    }
+
+    function test_CannotDonateZero() public {
+        uint amount = 10 ether;
+        address fakeDonor = vm.addr(2);
+        vm.deal(fakeDonor, amount);
+        uint campaignId = newCampaign();
+
+        vm.expectRevert(Crowdfund.Crowdfund_CannotDonateZero.selector);
+        vm.prank(fakeDonor);
+        crowdfund.donateToCampaign{value: 0}(campaignId);
+    }
+
+    function test_CannotDonateToInvalidCampaign() public {
+        uint campaignId = 1;
+        address fakeDonor = vm.addr(2);
+        uint amount = 10 ether;
+        uint amountToDonate = 1 ether;
+
+        vm.deal(fakeDonor, amount);
+
+        vm.expectRevert(abi.encodeWithSelector(Crowdfund.Crowdfund_InvalidCampaign.selector, campaignId));
+        vm.prank(fakeDonor);
+        crowdfund.donateToCampaign{value: amountToDonate}(campaignId);
     }
 }