diff --git a/config/config_test.go b/config/config_test.go
new file mode 100644
index 00000000..7fa04575
--- /dev/null
+++ b/config/config_test.go
@@ -0,0 +1,13 @@
+package config
+
+import "testing"
+
+func TestLoadDefaultConfig(t *testing.T) {
+    cfg := DefaultConfig()
+    if cfg.HTTPPort == 0 {
+        t.Fatalf("HTTPPort should be set in default config")
+    }
+    if cfg.DataDir == "" {
+        t.Fatalf("DataDir should not be empty in default config")
+    }
+}