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io: add tests for SectionReader ReadAt and Size

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R=golang-codereviews, dave
CC=golang-codereviews
https://golang.org/cl/39200045
This commit is contained in:
Shawn Smith 2013-12-29 22:38:05 +11:00 committed by Dave Cheney
parent 351caa4b91
commit 36c8c5f063
1 changed files with 20 additions and 0 deletions
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20
src/pkg/io/io_test.go
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@ -281,6 +281,8 @@ func TestSectionReader_ReadAt(t *testing.T) {
{data: dat, off: 3, n: len(dat), bufLen: len(dat) / 2, at: 2, exp: dat[5 : 5+len(dat)/2], err: nil},
{data: dat, off: 3, n: len(dat) / 2, bufLen: len(dat)/2 - 2, at: 2, exp: dat[5 : 5+len(dat)/2-2], err: nil},
{data: dat, off: 3, n: len(dat) / 2, bufLen: len(dat)/2 + 2, at: 2, exp: dat[5 : 5+len(dat)/2-2], err: EOF},
{data: dat, off: 0, n: 0, bufLen: 0, at: -1, exp: "", err: EOF},
{data: dat, off: 0, n: 0, bufLen: 0, at: 1, exp: "", err: EOF},
}
for i, tt := range tests {
r := strings.NewReader(tt.data)
@ -319,3 +321,21 @@ func TestSectionReader_Seek(t *testing.T) {
t.Errorf("Read = %v, %v; want 0, EOF", n, err)
}
}
func TestSectionReader_Size(t *testing.T) {
tests := []struct {
data string
want int64
}{
{"a long sample data, 1234567890", 30},
{"", 0},
}
for _, tt := range tests {
r := strings.NewReader(tt.data)
sr := NewSectionReader(r, 0, int64(len(tt.data)))
if got := sr.Size(); got != tt.want {
t.Errorf("Size = %v; want %v", got, tt.want)
}
}
}