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package mega
import (
"reflect"
"testing"
)
func TestGetChunkSizes(t *testing.T) {
const k = 1024
for _, test := range []struct {
size int64
want []chunkSize
}{
{
size: 0,
want: []chunkSize(nil),
},
{
size: 1,
want: []chunkSize{
{0, 1},
},
},
{
size: 128*k - 1,
want: []chunkSize{
{0, 128*k - 1},
},
},
{
size: 128 * k,
want: []chunkSize{
{0, 128 * k},
},
},
{
size: 128*k + 1,
want: []chunkSize{
{0, 128 * k},
{128 * k, 1},
},
},
{
size: 384*k - 1,
want: []chunkSize{
{0, 128 * k},
{128 * k, 256*k - 1},
},
},
{
size: 384 * k,
want: []chunkSize{
{0, 128 * k},
{128 * k, 256 * k},
},
},
{
size: 384*k + 1,
want: []chunkSize{
{0, 128 * k},
{128 * k, 256 * k},
{384 * k, 1},
},
},
{
size: 5 * k * k,
want: []chunkSize{
{0, 128 * k},
{128 * k, 256 * k},
{384 * k, 384 * k},
{768 * k, 512 * k},
{1280 * k, 640 * k},
{1920 * k, 768 * k},
{2688 * k, 896 * k},
{3584 * k, 1024 * k},
{4608 * k, 512 * k},
},
},
{
size: 10 * k * k,
want: []chunkSize{
{0, 128 * k},
{128 * k, 256 * k},
{384 * k, 384 * k},
{768 * k, 512 * k},
{1280 * k, 640 * k},
{1920 * k, 768 * k},
{2688 * k, 896 * k},
{3584 * k, 1024 * k},
{4608 * k, 1024 * k},
{5632 * k, 1024 * k},
{6656 * k, 1024 * k},
{7680 * k, 1024 * k},
{8704 * k, 1024 * k},
{9728 * k, 512 * k},
},
},
} {
got := getChunkSizes(test.size)
if !reflect.DeepEqual(test.want, got) {
t.Errorf("incorrect chunks for size %d: want %#v, got %#v", test.size, test.want, got)
}
}
}
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