fix: add more tests

Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>

cli/templates/functions.go

@@ -0,0 +1,15 @@
+package templates
+
+import (
+	"text/template"
+
+	E "github.com/IBM/fp-go/either"
+)
+
+var (
+	templateFunctions = template.FuncMap{}
+)
+
+func Parse(name, tmpl string) E.Either[error, *template.Template] {
+	return E.TryCatchError(template.New(name).Funcs(templateFunctions).Parse(tmpl))
+}