49 lines
1.5 KiB
Go
49 lines
1.5 KiB
Go
package configkit
|
|
|
|
import (
|
|
"io/fs"
|
|
"os"
|
|
"path/filepath"
|
|
"testing"
|
|
)
|
|
|
|
// Files disappearing between filesystem operations are not deterministic with
|
|
// real concurrent deletion. Exercise the private seam that controls optionality.
|
|
func TestRegularFileMissingFailurePhases(t *testing.T) {
|
|
name := filepath.Join(t.TempDir(), "input.yml")
|
|
if err := os.WriteFile(name, []byte("{}"), 0o600); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
for _, test := range []struct {
|
|
name string
|
|
stat func(string) (fs.FileInfo, error)
|
|
open func(string) (*os.File, error)
|
|
missing bool
|
|
}{
|
|
{"preflight", func(string) (fs.FileInfo, error) { return nil, fs.ErrNotExist }, os.Open, true},
|
|
{"open", os.Stat, func(string) (*os.File, error) { return nil, fs.ErrNotExist }, true},
|
|
{"post-open stat", os.Stat, func(name string) (*os.File, error) {
|
|
file, err := os.Open(name)
|
|
if err == nil {
|
|
err = file.Close()
|
|
}
|
|
return file, err
|
|
}, false},
|
|
} {
|
|
t.Run(test.name, func(t *testing.T) {
|
|
data, failure := readRegularFile(name, test.stat, test.open, 16)
|
|
if data != nil || failure == nil || failure.kind != sourceReadIO || failure.missingTarget != test.missing {
|
|
t.Fatalf("data = %v, failure = %#v", data, failure)
|
|
}
|
|
})
|
|
}
|
|
_, failure := readBoundedSource(missingDuringRead{}, 16)
|
|
if failure == nil || failure.kind != sourceReadIO || failure.missingTarget {
|
|
t.Fatalf("late read failure = %#v", failure)
|
|
}
|
|
}
|
|
|
|
type missingDuringRead struct{}
|
|
|
|
func (missingDuringRead) Read([]byte) (int, error) { return 0, fs.ErrNotExist }
|