diff --git a/internal/utils/json_type_extractor_test.go b/internal/utils/json_type_extractor_test.go
new file mode 100644
index 00000000000..3fdb01e9a50
--- /dev/null
+++ b/internal/utils/json_type_extractor_test.go
@@ -0,0 +1,31 @@
+package utils_test
+
+import (
+	"github.com/stretchr/testify/assert"
+	"github.com/thomaspoignant/go-feature-flag/internal/utils"
+	"testing"
+)
+
+func Test_JSONTypeExtractor(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    interface{}
+		expected string
+	}{
+		{"string", "hello", "(string)"},
+		{"integer", 42, "(number)"},
+		{"float", 3.14, "(number)"},
+		{"bool", true, "(bool)"},
+		{"[]interface", []interface{}{1, "two", 3.0}, "([]interface{})"},
+		{"map", map[string]interface{}{"key1": "value1", "key2": 2}, "(map[string]interface{})"},
+		{"null", nil, ""},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := utils.JSONTypeExtractor(tt.input)
+			assert.NoError(t, err, "unexpected error")
+			assert.Equal(t, tt.expected, got)
+		})
+	}
+}