add test for loading from registry for all modules

internal/module/test/serial-client_test.go

@@ -0,0 +1,32 @@
+package module_test
+
+import (
+	"testing"
+
+	"github.com/jwetzell/showbridge-go/internal/config"
+	"github.com/jwetzell/showbridge-go/internal/module"
+)
+
+func TestSerialClientFromRegistry(t *testing.T) {
+	registration, ok := module.ModuleRegistry["serial.client"]
+	if !ok {
+		t.Fatalf("serial.client module not registered")
+	}
+
+	moduleInstance, err := registration.New(config.ModuleConfig{
+		Type: "serial.client",
+		Params: map[string]any{
+			"port":     "/dev/ttyUSB0",
+			"framing":  "LF",
+			"baudRate": 9600.0,
+		},
+	})
+
+	if err != nil {
+		t.Fatalf("failed to create serial.client module: %s", err)
+	}
+
+	if moduleInstance.Type() != "serial.client" {
+		t.Fatalf("serial.client module has wrong type: %s", moduleInstance.Type())
+	}
+}