diff --git a/Integrate-Checksum/main_test.go b/Integrate-Checksum/main_test.go
index 589322fd..557c7912 100644
--- a/Integrate-Checksum/main_test.go
+++ b/Integrate-Checksum/main_test.go
@@ -2,7 +2,6 @@ package main
 
 import (
 	"encoding/json"
-	"os"
 	"runtime"
 	"testing"
 
@@ -11,6 +10,7 @@ import (
 	"gotest.tools/assert"
 	"kcl-lang.io/kpm/pkg/client"
 	"kcl-lang.io/kpm/pkg/constants"
+	"kcl-lang.io/kpm/pkg/utils"
 )
 
 // TestMainFunc tests the main functionality of the integrate checksum tool
@@ -24,20 +24,16 @@ func TestMainFunc(t *testing.T) {
 	err := mock.StartDockerRegistry()
 	assert.NilError(t, err)
 
-	// Push the test package to the local OCI registry
-	err = mock.PushTestPkgToRegistry()
+	// Push the test package to the local OCI registry.
+	pkgDir, 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)
+	packageDirs, err := findKCLModFiles(pkgDir)
 	assert.NilError(t, err, "Failed to locate KCL module files")
 	assert.Assert(t, len(packageDirs) > 0, "No KCL module files found")
 
@@ -82,9 +78,7 @@ func TestMainFunc(t *testing.T) {
 	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))
-	}
+	assert.Assert(t, string(newManifestJSON) != string(originalManifestJSON), "Failed to update the manifest")
 
 	// Revert the `Sum` field to its original value to ensure only that was changed.
 	newManifest.Annotations[constants.DEFAULT_KCL_OCI_MANIFEST_SUM] = dependency.Sum
@@ -94,6 +88,24 @@ func TestMainFunc(t *testing.T) {
 	// Compare the new manifest data with the expected manifest data.
 	assert.Equal(t, string(newManifestJSON), string(originalManifestJSON), "New manifest data mismatch")
 
+	// Pull the test package.
+	pkgPullPath, err := mock.PullTestPkg()
+	assert.NilError(t, err)
+
+	// Find KCL module files in the pulled package.
+	packagePullDir, err := findKCLModFiles(pkgPullPath)
+	assert.NilError(t, err, "Failed to locate KCL module files")
+
+	// Ensure that at least one KCL module file was found.
+	assert.Assert(t, len(packagePullDir) > 0, "No KCL module files found")
+
+	// Calculate the hash of the pulled KCL module directory to verify its integrity.
+	pulledSum, err := utils.HashDir(packagePullDir[0])
+	assert.NilError(t, err)
+
+	// Compare the hash of the pulled files with the expected dependency sum to check for unintended changes.
+	assert.Equal(t, pulledSum, dependency.Sum, "Unexpected changes detected in the package contents")
+
 	// 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
deleted file mode 100644
index 6c01364d..00000000
--- a/Integrate-Checksum/test_data/kcl.mod
+++ /dev/null
@@ -1,8 +0,0 @@
-[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
deleted file mode 100644
index 41b4867f..00000000
--- a/Integrate-Checksum/test_data/kcl.mod.lock
+++ /dev/null
@@ -1,5 +0,0 @@
-[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
deleted file mode 100644
index fa7048e6..00000000
--- a/Integrate-Checksum/test_data/main.k
+++ /dev/null
@@ -1 +0,0 @@
-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
index 4ebd5819..f9b2a32b 100644
--- a/mock/oci_env_mock.go
+++ b/mock/oci_env_mock.go
@@ -10,10 +10,18 @@ func StartDockerRegistry() error {
 	return cmd.Run()
 }
 
-// PushTestPkgToRegistry pushes the test package to the local Docker registry.
-func PushTestPkgToRegistry() error {
+// PushTestPkgToRegistry pushes the test package to the local Docker registry and returns directory location.
+func PushTestPkgToRegistry() (string, error) {
 	cmd := exec.Command("../mock/test_script/push_pkg.sh")
-	return cmd.Run()
+	currentDir := "../mock"
+	return currentDir, cmd.Run()
+}
+
+// PullTestPkg pulls the test package from the local Docker registry.
+func PullTestPkg() (string, error) {
+	cmd := exec.Command("../mock/test_script/pull_pkg.sh")
+	pkgPullPath := "../mock/test_script"
+	return pkgPullPath, cmd.Run()
 }
 
 // CleanTestEnv cleans up the test environment by executing a cleanup script.
diff --git a/mock/test_data/kcl.mod b/mock/test_data/kcl.mod
index 6c01364d..d0044fa4 100644
--- a/mock/test_data/kcl.mod
+++ b/mock/test_data/kcl.mod
@@ -1,8 +1,4 @@
 [package]
 name = "test_data"
 edition = "v0.9.0"
-version = "0.0.1"
-
-[dependencies]
-k8s = "1.31"
-
+version = "0.0.1"
\ No newline at end of file
diff --git a/mock/test_data/kcl.mod.lock b/mock/test_data/kcl.mod.lock
index 41b4867f..e69de29b 100644
--- a/mock/test_data/kcl.mod.lock
+++ b/mock/test_data/kcl.mod.lock
@@ -1,5 +0,0 @@
-[dependencies]
-  [dependencies.k8s]
-    name = "k8s"
-    full_name = "k8s_1.31"
-    version = "1.31"
diff --git a/mock/test_script/cleanup_test_environment.sh b/mock/test_script/cleanup_test_environment.sh
index 4a244a01..2857c8a7 100755
--- a/mock/test_script/cleanup_test_environment.sh
+++ b/mock/test_script/cleanup_test_environment.sh
@@ -18,3 +18,6 @@ rm -rf "$current_dir/scripts/"
 # Delete the 'kcl' binary
 cd "$SCRIPT_DIR/../../"
 rm -rf ./bin/
+
+cd "$SCRIPT_DIR"
+rm -rf ./oci/
\ No newline at end of file
diff --git a/mock/test_script/pull_pkg.sh b/mock/test_script/pull_pkg.sh
new file mode 100755
index 00000000..9304665d
--- /dev/null
+++ b/mock/test_script/pull_pkg.sh
@@ -0,0 +1,31 @@
+#!/bin/bash
+
+# Get the directory of the script
+SCRIPT_DIR="$(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
+
+# Pull the test_data package from the registry
+cd "$SCRIPT_DIR"
+"$current_dir/bin/kcl" mod pull oci://$KPM_REG/$KPM_REPO