)

// Source of YAML text.
type Source interface {
	// Template reads the raw input and creates a Template from this source.
	Template() (*param.Template, error)

	// TemplateOrFail calls Template and fails if an error occurs.
	TemplateOrFail(t test.Failer) *param.Template

	// MustTemplate calls Template and panics if an error occurs.
	MustTemplate() *param.Template

		for _, s := range s.SplitOrFail(b.t) {
			// If the caller set namespaces with literal strings, replace with namespace.Instance objects.
			s = replaceNamespaceStrings(s)

			tpl := s.TemplateOrFail(out.t)
			need := tpl.MissingParams(s.Params())
			needFrom := need.Contains(param.From.String())
			needTo := need.Contains(param.To.String())

			if needFrom && needTo {