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os: Simplify size using io.Discard. 

Change-Id: Ib7cc86643a3dcae788a94472e54de171e0d655fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/355449
Trust: Michael Pratt <mpratt@google.com>
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
This commit is contained in:
Tamir Duberstein 2021-10-12 16:00:23 -04:00 committed by Michael Pratt
parent 61890fb123
commit 3283d1a2f2
1 changed files with 8 additions and 12 deletions
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20
src/os/os_test.go
View File

@ -115,20 +115,16 @@ func size(name string, t *testing.T) int64 {
if err != nil {
t.Fatal("open failed:", err)
}
defer file.Close()
var buf [100]byte
len := 0
for {
n, e := file.Read(buf[0:])
len += n
if e == io.EOF {
break
}
if e != nil {
t.Fatal("read failed:", e)
defer func() {
if err := file.Close(); err != nil {
t.Error(err)
}
}()
n, err := io.Copy(io.Discard, file)
if err != nil {
t.Fatal(err)
}
return int64(len)
return n
}
func equal(name1, name2 string) (r bool) {