diff --git a/.github/workflows/include-kcl-checksums.yml b/.github/workflows/include-kcl-checksums.yml
new file mode 100644
index 00000000..8a1fce9f
--- /dev/null
+++ b/.github/workflows/include-kcl-checksums.yml
@@ -0,0 +1,31 @@
+name: Include KCL Modules Checksum
+
+on:
+  push:
+
+jobs:
+  include_modules_checksum:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Install kcl
+        run: wget -q https://kcl-lang.io/script/install-cli.sh -O - | /bin/bash
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+
+      - name: Login to GHCR
+        run: kcl registry login -u ${{ secrets.DEPLOY_ACCESS_NAME }} -p ${{ secrets.DEPLOY_ACCESS_TOKEN }} ghcr.io
+
+      - name: Get dependencies
+        run: go get -v ./...
+
+      - name: Run include checksum tool
+        run: go run ./Integrate-Checksum/main.go
diff --git a/Integrate-Checksum/main.go b/Integrate-Checksum/main.go
index 764d3999..afbd2a4e 100644
--- a/Integrate-Checksum/main.go
+++ b/Integrate-Checksum/main.go
@@ -215,4 +215,6 @@ func main() {
 			fmt.Printf("Error processing package at '%s': %v\n", packageDir, err)
 		}
 	}
+	
+	fmt.Println("Checksum successfully included in all KCL packages")
 }
diff --git a/Integrate-Checksum/main_test.go b/Integrate-Checksum/main_test.go
new file mode 100644
index 00000000..589322fd
--- /dev/null
+++ b/Integrate-Checksum/main_test.go
@@ -0,0 +1,100 @@
+package main
+
+import (
+	"encoding/json"
+	"os"
+	"runtime"
+	"testing"
+
+	"artifacthub/mock"
+
+	"gotest.tools/assert"
+	"kcl-lang.io/kpm/pkg/client"
+	"kcl-lang.io/kpm/pkg/constants"
+)
+
+// TestMainFunc tests the main functionality of the integrate checksum tool
+func TestMainFunc(t *testing.T) {
+	// Skip the test on Windows due to platform-specific issues.
+	if runtime.GOOS == "windows" {
+		t.Skip("Skipping TestMainFunc on Windows due to platform-specific issues")
+	}
+
+	// Start the local Docker registry required for testing
+	err := mock.StartDockerRegistry()
+	assert.NilError(t, err)
+
+	// Push the test package to the local OCI registry
+	err = mock.PushTestPkgToRegistry()
+	assert.NilError(t, err)
+
+	// Initialize the KPM client.
+	kpmClient, err := client.NewKpmClient()
+	assert.NilError(t, err, "Failed to initialize KPM client")
+
+	// Get the current working directory.
+	currentDir, err := os.Getwd()
+	assert.NilError(t, err, "Failed to get current working directory")
+
+	// Locate KCL module files in the current directory.
+	packageDirs, err := findKCLModFiles(currentDir)
+	assert.NilError(t, err, "Failed to locate KCL module files")
+	assert.Assert(t, len(packageDirs) > 0, "No KCL module files found")
+
+	// Resolve the dependency for the first module found.
+	dependency, err := resolveDependency(kpmClient, packageDirs[0])
+	assert.NilError(t, err, "Failed to resolve dependency")
+
+	// Set custom OCI registry and repository for testing.
+	dependency.Source.Oci.Reg = "localhost:5001"
+	dependency.Source.Oci.Repo = "test"
+
+	// Fetch the original manifest.
+	originalManifest, err := fetchManifest(kpmClient, dependency)
+	assert.NilError(t, err, "Failed to fetch original manifest")
+
+	// Marshal the original manifest into JSON format.
+	originalManifestJSON, err := json.Marshal(originalManifest)
+	assert.NilError(t, err, "Failed to marshal original manifest to JSON")
+
+	// Configure the repository for testing purposes.
+	repository, err := configureRepository(dependency, kpmClient)
+	assert.NilError(t, err, "Failed to configure repository")
+	repository.PlainHTTP = true // Enable plain HTTP for local testing.
+
+	// Modify the manifest annotations for testing.
+	originalManifest.Annotations[constants.DEFAULT_KCL_OCI_MANIFEST_SUM] = "changes-for-testing-purpose"
+
+	// Marshal the updated manifest into JSON format.
+	updatedManifestJSON, err := json.Marshal(originalManifest)
+	assert.NilError(t, err, "Failed to marshal updated manifest to JSON")
+
+	// Tag the updated manifest in the repository.
+	err = tagManifest(repository, updatedManifestJSON, dependency)
+	assert.NilError(t, err, "Failed to tag updated manifest in repository")
+
+	// Fetch the new manifest after tagging.
+	newManifest, err := fetchManifest(kpmClient, dependency)
+	assert.NilError(t, err, "Failed to fetch new manifest")
+
+	// Marshal the new manifest into JSON format for comparison.
+	newManifestJSON, err := json.Marshal(newManifest)
+	assert.NilError(t, err, "Failed to marshal new manifest to JSON")
+
+	// Check if the manifest was updated correctly.
+	if string(newManifestJSON) == string(originalManifestJSON) {
+		t.Errorf("Failed to update the manifest; got %v", string(originalManifestJSON))
+	}
+
+	// Revert the `Sum` field to its original value to ensure only that was changed.
+	newManifest.Annotations[constants.DEFAULT_KCL_OCI_MANIFEST_SUM] = dependency.Sum
+	newManifestJSON, err = json.Marshal(newManifest)
+	assert.NilError(t, err, "Failed to marshal reverted manifest to JSON")
+
+	// Compare the new manifest data with the expected manifest data.
+	assert.Equal(t, string(newManifestJSON), string(originalManifestJSON), "New manifest data mismatch")
+
+	// Clean the environment after all tests have been run
+	err = mock.CleanTestEnv()
+	assert.NilError(t, err)
+}
diff --git a/Integrate-Checksum/test_data/kcl.mod b/Integrate-Checksum/test_data/kcl.mod
new file mode 100644
index 00000000..6c01364d
--- /dev/null
+++ b/Integrate-Checksum/test_data/kcl.mod
@@ -0,0 +1,8 @@
+[package]
+name = "test_data"
+edition = "v0.9.0"
+version = "0.0.1"
+
+[dependencies]
+k8s = "1.31"
+
diff --git a/Integrate-Checksum/test_data/kcl.mod.lock b/Integrate-Checksum/test_data/kcl.mod.lock
new file mode 100644
index 00000000..41b4867f
--- /dev/null
+++ b/Integrate-Checksum/test_data/kcl.mod.lock
@@ -0,0 +1,5 @@
+[dependencies]
+  [dependencies.k8s]
+    name = "k8s"
+    full_name = "k8s_1.31"
+    version = "1.31"
diff --git a/Integrate-Checksum/test_data/main.k b/Integrate-Checksum/test_data/main.k
new file mode 100644
index 00000000..fa7048e6
--- /dev/null
+++ b/Integrate-Checksum/test_data/main.k
@@ -0,0 +1 @@
+The_first_kcl_program = 'Hello World!'
\ No newline at end of file
diff --git a/mock/oci_env_mock.go b/mock/oci_env_mock.go
new file mode 100644
index 00000000..4ebd5819
--- /dev/null
+++ b/mock/oci_env_mock.go
@@ -0,0 +1,23 @@
+package mock
+
+import (
+	"os/exec"
+)
+
+// StartDockerRegistry starts a local Docker registry by executing a shell script.
+func StartDockerRegistry() error {
+	cmd := exec.Command("../scripts/reg.sh")
+	return cmd.Run()
+}
+
+// PushTestPkgToRegistry pushes the test package to the local Docker registry.
+func PushTestPkgToRegistry() error {
+	cmd := exec.Command("../mock/test_script/push_pkg.sh")
+	return cmd.Run()
+}
+
+// CleanTestEnv cleans up the test environment by executing a cleanup script.
+func CleanTestEnv() error {
+	cmd := exec.Command("../mock/test_script/cleanup_test_environment.sh")
+	return cmd.Run()
+}
diff --git a/mock/test_data/kcl.mod b/mock/test_data/kcl.mod
new file mode 100644
index 00000000..6c01364d
--- /dev/null
+++ b/mock/test_data/kcl.mod
@@ -0,0 +1,8 @@
+[package]
+name = "test_data"
+edition = "v0.9.0"
+version = "0.0.1"
+
+[dependencies]
+k8s = "1.31"
+
diff --git a/mock/test_data/kcl.mod.lock b/mock/test_data/kcl.mod.lock
new file mode 100644
index 00000000..41b4867f
--- /dev/null
+++ b/mock/test_data/kcl.mod.lock
@@ -0,0 +1,5 @@
+[dependencies]
+  [dependencies.k8s]
+    name = "k8s"
+    full_name = "k8s_1.31"
+    version = "1.31"
diff --git a/mock/test_data/main.k b/mock/test_data/main.k
new file mode 100644
index 00000000..fa7048e6
--- /dev/null
+++ b/mock/test_data/main.k
@@ -0,0 +1 @@
+The_first_kcl_program = 'Hello World!'
\ No newline at end of file
diff --git a/mock/test_script/cleanup_test_environment.sh b/mock/test_script/cleanup_test_environment.sh
new file mode 100755
index 00000000..4a244a01
--- /dev/null
+++ b/mock/test_script/cleanup_test_environment.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+
+# Determine the directory where this script is located
+SCRIPT_DIR="$(dirname "$(realpath "$0")")"
+
+# Stop and remove the Docker container then remove the Docker image
+docker stop kcl-registry
+docker rm kcl-registry
+docker rmi registry
+
+# Delete all data stored in the Docker registry volume
+rm -rf /var/lib/registry/*
+
+# Remove the directory that contains Docker authentication and related scripts
+current_dir=$(pwd)
+rm -rf "$current_dir/scripts/"
+
+# Delete the 'kcl' binary
+cd "$SCRIPT_DIR/../../"
+rm -rf ./bin/
diff --git a/mock/test_script/push_pkg.sh b/mock/test_script/push_pkg.sh
new file mode 100755
index 00000000..999065aa
--- /dev/null
+++ b/mock/test_script/push_pkg.sh
@@ -0,0 +1,31 @@
+#!/bin/bash
+
+# Get the directory of the script
+SCRIPT_DIR="$(dirname "$(realpath "$0")")"
+
+# Move to the root directory
+cd "$SCRIPT_DIR/../../"
+
+# Install kcl binary
+GOBIN=$(pwd)/bin go install kcl-lang.io/cli/cmd/kcl@latest
+
+# Check kpm version
+version=$(./bin/kcl --version)
+if ! echo "$version" ; then
+  echo "Incorrect version: '$version'."
+  exit 1
+fi
+
+export KPM_REG="localhost:5001"
+export KPM_REPO="test"
+
+# Prepare the package on the registry
+current_dir=$(pwd)
+echo $current_dir
+
+# Log in to the local registry
+"$current_dir/bin/kcl" registry login -u test -p 1234 localhost:5001
+
+# Push the test_data package to the registry
+cd "$SCRIPT_DIR/../test_data"
+"$current_dir/bin/kcl" mod push oci://$KPM_REG/$KPM_REPO