package providerapi

import (
	"errors"
	"testing"

	"github.com/proxy-pool/proxy-pool/internal/config"
)

func TestTemplateParserRejectsNestedRanges(t *testing.T) {
	t.Parallel()

	_, err := NewTemplateParser("provider-a", config.Upstream{
		Provider: config.Provider{Protocols: []string{"http"}},
		API: config.ProviderAPI{
			Template: `{{range .}}{{range .}}{{end}}{{end}}`,
		},
		Pool: config.Pool{MaxSize: 10},
	}, nil)
	if !errors.Is(err, ErrTemplateTooComplex) {
		t.Fatalf("NewTemplateParser() error = %v, want ErrTemplateTooComplex", err)
	}
}