[pool] Increase test coverage

resource_list_test.go

@@ -4,8 +4,49 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
+func TestResList_Append(t *testing.T) {
+	r := require.New(t)
+
+	arr := []*Resource[any]{
+		new(Resource[any]),
+		new(Resource[any]),
+		new(Resource[any]),
+	}
+
+	list := resList[any](arr)
+
+	list.append(new(Resource[any]))
+	r.Len(list, 4)
+	list.append(new(Resource[any]))
+	r.Len(list, 5)
+	list.append(new(Resource[any]))
+	r.Len(list, 6)
+}
+
+func TestResList_PopBack(t *testing.T) {
+	r := require.New(t)
+
+	arr := []*Resource[any]{
+		new(Resource[any]),
+		new(Resource[any]),
+		new(Resource[any]),
+	}
+
+	list := resList[any](arr)
+
+	list.popBack()
+	r.Len(list, 2)
+	list.popBack()
+	r.Len(list, 1)
+	list.popBack()
+	r.Len(list, 0)
+
+	r.Panics(func() { list.popBack() })
+}
+
 func TestResList_PanicsWithBugReportIfResourceDoesNotExist(t *testing.T) {
 	arr := []*Resource[any]{
 		new(Resource[any]),