diff --git a/pkg/client/metadata_test.go b/pkg/client/metadata_test.go
new file mode 100644
index 00000000..088b18a3
--- /dev/null
+++ b/pkg/client/metadata_test.go
@@ -0,0 +1,59 @@
+package client
+
+import (
+	"encoding/json"
+	"testing"
+
+	"kcl-lang.io/kpm/pkg/opt"
+	pkg "kcl-lang.io/kpm/pkg/package"
+)
+
+// TestResolvePkgDepsMetadata verifies that dependency resolution works as expected.
+func TestResolvePkgDepsMetadata(t *testing.T) {
+	// Create a real KpmClient
+	client := &KpmClient{}
+
+	// Initialize KclPkg using InitOptions
+	initOptions := &opt.InitOptions{
+		InitPath: "testdata/sample_package",
+	}
+	kclPkg := pkg.NewKclPkg(initOptions)
+
+	// Attempt to resolve package dependencies
+	err := client.ResolvePkgDepsMetadata(&kclPkg, true)
+	if err != nil {
+		t.Errorf("ResolvePkgDepsMetadata failed: %v", err)
+	}
+}
+
+// TestResolveDepsMetadataInJsonStr verifies that dependencies metadata is serialized correctly.
+func TestResolveDepsMetadataInJsonStr(t *testing.T) {
+	client := &KpmClient{}
+
+	// Initialize KclPkg using InitOptions
+	initOptions := &opt.InitOptions{
+		InitPath: "testdata/sample_package",
+	}
+	kclPkg := pkg.NewKclPkg(initOptions)
+
+	// Get dependencies metadata in JSON
+	jsonStr, err := client.ResolveDepsMetadataInJsonStr(&kclPkg, true)
+	if err != nil {
+		t.Fatalf("ResolveDepsMetadataInJsonStr failed: %v", err)
+	}
+
+	// Print JSON output to inspect its structure
+	t.Logf("JSON Output: %s", jsonStr)
+
+	// Try to unmarshal into a generic structure if DepMetadata is unknown
+	var deps interface{}
+	err = json.Unmarshal([]byte(jsonStr), &deps)
+	if err != nil {
+		t.Errorf("Failed to parse JSON output: %v", err)
+	}
+
+	// Check if the output contains expected keys
+	if deps == nil {
+		t.Errorf("Expected some dependencies but got none")
+	}
+}
diff --git a/pkg/client/package_test.go b/pkg/client/package_test.go
new file mode 100644
index 00000000..83e55dab
--- /dev/null
+++ b/pkg/client/package_test.go
@@ -0,0 +1,80 @@
+package client
+
+import (
+	"os"
+	"testing"
+
+	"kcl-lang.io/kpm/pkg/opt"
+	pkg "kcl-lang.io/kpm/pkg/package"
+)
+
+// TestPackagePkg verifies that the PackagePkg function correctly creates a .tar file.
+func TestPackagePkg(t *testing.T) {
+	client := &KpmClient{}
+
+	// Create a temporary directory for testing
+	tempDir, err := os.MkdirTemp("", "kclpkg_test")
+	if err != nil {
+		t.Fatalf("Failed to create temp directory: %v", err)
+	}
+	defer os.RemoveAll(tempDir) // Clean up after test
+
+	// Initialize KclPkg with a valid path
+	initOptions := &opt.InitOptions{
+		InitPath: tempDir,
+	}
+	kclPkg := pkg.NewKclPkg(initOptions)
+
+	// Run the packaging function
+	tarPath, err := client.PackagePkg(&kclPkg, false)
+	if err != nil {
+		t.Fatalf("PackagePkg failed: %v", err)
+	}
+
+	// Check if the .tar file was created
+	if _, err := os.Stat(tarPath); os.IsNotExist(err) {
+		t.Errorf("Expected tar file at %s but it was not created", tarPath)
+	} else {
+		t.Logf("Tar file created successfully at %s", tarPath)
+	}
+}
+
+// TestPackage verifies that the Package function correctly archives the package.
+func TestPackage(t *testing.T) {
+	client := &KpmClient{}
+
+	// Create a temporary directory for testing
+	tempDir, err := os.MkdirTemp("", "kclpkg_test")
+	if err != nil {
+		t.Fatalf("Failed to create temp directory: %v", err)
+	}
+	defer os.RemoveAll(tempDir) // Clean up after test
+
+	// Initialize KclPkg
+	initOptions := &opt.InitOptions{
+		InitPath: tempDir,
+	}
+	kclPkg := pkg.NewKclPkg(initOptions)
+
+	// Determine tar path
+	tarPath := kclPkg.DefaultTarPath()
+
+	// Ensure any existing tar file is removed before testing
+	_ = os.Remove(tarPath)
+
+	// Run the package function
+	err = client.Package(&kclPkg, tarPath, false)
+	if err != nil {
+		t.Fatalf("Package failed: %v", err)
+	}
+
+	// Verify the tar file was created
+	if _, err := os.Stat(tarPath); os.IsNotExist(err) {
+		t.Errorf("Expected tar file at %s but it was not created", tarPath)
+	} else {
+		t.Logf("Tar file created successfully at %s", tarPath)
+	}
+
+	// Clean up after test
+	_ = os.Remove(tarPath)
+}