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restic/internal/textfile/read_test.go

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package textfile
import (
"bytes"
"encoding/hex"
"os"
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"testing"
)
// writeTempfile writes data to a new temporary file and returns its name
// and a callback that removes it.
func writeTempfile(t testing.TB, data []byte) (string, func()) {
t.Helper()
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f, err := os.CreateTemp("", "restic-test-textfile-read-")
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if err != nil {
t.Fatal(err)
}
name := f.Name()
defer func() {
closeErr := f.Close()
if err == nil && closeErr != nil {
err = closeErr
}
if err != nil {
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// ignore subsequent errors
_ = os.Remove(name)
t.Fatal(err)
}
}()
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_, err = f.Write(data)
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if err != nil {
t.Fatal(err)
}
return name, func() {
err := os.Remove(name)
if err != nil {
t.Fatal(err)
}
}
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}
func dec(s string) []byte {
data, err := hex.DecodeString(s)
if err != nil {
panic(err)
}
return data
}
func TestRead(t *testing.T) {
var tests = []struct {
data []byte
want []byte
}{
{data: []byte("foo bar baz")},
{data: []byte("Ööbär")},
{
data: []byte("\xef\xbb\xbffööbär"),
want: []byte("fööbär"),
},
{
data: dec("feff006600f600f6006200e40072"),
want: []byte("fööbär"),
},
{
data: dec("fffe6600f600f6006200e4007200"),
want: []byte("fööbär"),
},
}
for _, test := range tests {
t.Run("", func(t *testing.T) {
want := test.want
if want == nil {
want = test.data
}
tempname, cleanup := writeTempfile(t, test.data)
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defer cleanup()
data, err := Read(tempname)
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if err != nil {
t.Fatal(err)
}
if !bytes.Equal(want, data) {
t.Errorf("invalid data returned, want:\n %q\ngot:\n %q", want, data)
}
})
}
}