packer-cn/command/utils_test.go

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package command
import (
"io/ioutil"
"log"
"os"
"path/filepath"
)
func mustString(s string, e error) string {
if e != nil {
panic(e)
}
return s
}
func createFiles(dir string, content map[string]string) {
for relPath, content := range content {
contentPath := filepath.Join(dir, relPath)
if err := os.MkdirAll(filepath.Dir(contentPath), 0777); err != nil {
panic(err)
}
if err := ioutil.WriteFile(contentPath, []byte(content), 0666); err != nil {
panic(err)
}
log.Printf("created tmp file: %s", contentPath)
}
}
type configDirSingleton struct {
dirs map[string]string
}
// when you call dir twice with the same key, the result should be the same
func (c *configDirSingleton) dir(key string) string {
if v, exists := c.dirs[key]; exists {
return v
}
c.dirs[key] = mustString(ioutil.TempDir("", "pkr-test-cfg-dir-"+key))
return c.dirs[key]
}