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Seek to offset 0 after Truncate() (#5375)

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This commit is contained in:
Krishna Srinivas
2018-02-06 15:37:48 -08:00
committed by kannappanr
parent 1164fc60f3
commit 047b7aff0c
5 changed files with 72 additions and 56 deletions
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37
cmd/utils_test.go
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@@ -365,18 +365,47 @@ func TestContains(t *testing.T) {
}
}
// Test jsonLoadFromSeeker.
func TestJSONLoadFromSeeker(t *testing.T) {
// Test jsonLoad.
func TestJSONLoad(t *testing.T) {
format := newFormatFSV1()
b, err := json.Marshal(format)
if err != nil {
t.Fatal(err)
}
var gotFormat formatFSV1
if err = jsonLoadFromSeeker(bytes.NewReader(b), &gotFormat); err != nil {
if err = jsonLoad(bytes.NewReader(b), &gotFormat); err != nil {
t.Fatal(err)
}
if *format != gotFormat {
t.Fatal("jsonLoadFromSeeker() failed to decode json")
t.Fatal("jsonLoad() failed to decode json")
}
}
// Test jsonSave.
func TestJSONSave(t *testing.T) {
f, err := ioutil.TempFile("", "")
if err != nil {
t.Fatal(err)
}
defer os.Remove(f.Name())
// Test to make sure formatFSSave overwrites and does not append.
format := newFormatFSV1()
if err = jsonSave(f, format); err != nil {
t.Fatal(err)
}
fi1, err := f.Stat()
if err != nil {
t.Fatal(err)
}
if err = jsonSave(f, format); err != nil {
t.Fatal(err)
}
fi2, err := f.Stat()
if err != nil {
t.Fatal(err)
}
if fi1.Size() != fi2.Size() {
t.Fatal("Size should not differ after jsonSave()", fi1.Size(), fi2.Size(), f.Name())
}
}