refactor: use reflect.TypeFor instead of reflect.TypeOf and improve related tests (#2101)

* refactor: using reflect.TypeFor

Signed-off-by: suranmiao <solsui@outlook.com>

* refactor: remove unused reflect.TypeFor calls and improve test assertions

* refactor: simplify TestSetup by removing reflect.TypeFor

* test: enhance test assertions and improve parallel execution in TestSetup

---------

Signed-off-by: suranmiao <solsui@outlook.com>
Co-authored-by: Adrian Gallagher <adrian.gallagher@thrasher.io>

gctscript/modules/loader/loader_test.go

@@ -1,18 +1,14 @@
 package loader
 
 import (
-	"reflect"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestGetModuleMap(t *testing.T) {
 	x := GetModuleMap()
-	xType := reflect.TypeOf(x).String()
-	if xType != "*tengo.ModuleMap" {
-		t.Fatalf("GetModuleMap() should return pointer to ModuleMap instead received: %v", x)
-	}
-
-	if x.Len() == 0 {
-		t.Fatal("expected GetModuleMap() to contain module results instead received 0 value")
-	}
+	require.NotNil(t, x, "GetModuleMap must not return nil")
+	assert.NotZero(t, x.Len(), "GetModuleMap should return a map with entries")
 }