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// Copyright (c) 2023, Sylabs Inc. All rights reserved.
// This software is licensed under a 3-clause BSD license. Please consult the
// LICENSE.md file distributed with the sources of this project regarding your
// rights to use or distribute this software.
package tmpl
import (
"html/template"
"os"
"path/filepath"
"testing"
)
// Execute creates a file in tmpdir based on namePattern whose contents are the
// result of executing the Go template in tmplPath, over the struct passed in
// the values argument. Returns the full path of the created file. The created
// file will be automatically removed at the end of the test t unless t fails.
func Execute(t *testing.T, tmpdir, namePattern, tmplPath string, values any) string {
outfile, err := os.CreateTemp(tmpdir, namePattern)
if err != nil {
t.Fatalf("failed to open temp file: %v", err)
}
outfilePath := outfile.Name()
t.Cleanup(func() {
if !t.Failed() {
os.Remove(outfilePath)
}
})
defer outfile.Close()
tmplBytes, err := os.ReadFile(tmplPath)
if err != nil {
t.Fatalf("While trying to read template file %q: %v", tmplPath, err)
}
tmpl, err := template.New(filepath.Base(outfilePath)).Parse(string(tmplBytes))
if err != nil {
t.Fatalf("While trying to parse template file %q: %v", tmplPath, err)
}
err = tmpl.Execute(outfile, values)
if err != nil {
t.Fatalf("While trying to execute template %q: %v", tmplPath, err)
}
return outfilePath
}
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