/usr/share/gocode/src/github.com/retailnext/hllpp/sparse_test.go is in golang-github-retailnext-hllpp-dev 1.0.0+git20170901.6e8b6d3-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | // Copyright (c) 2015, RetailNext, Inc.
// All rights reserved.
package hllpp
import (
"testing"
)
func TestSparseReaderWriter(t *testing.T) {
writer := newSparseWriter()
if writer.Len() != 0 {
t.Errorf("got %d", writer.Len())
}
if len(writer.Bytes()) != 0 {
t.Errorf("got %+v", writer.Bytes())
}
reader := newSparseReader(writer.Bytes())
if !reader.Done() {
t.Errorf("should be done")
}
writer.Append(127, 0, 1)
// same idx, but bigger rho than previous, use this one
writer.Append(126, 0, 2)
if writer.Len() != 1 || len(writer.Bytes()) != 1 {
t.Errorf("got %d", writer.Len())
}
// show we are storing deltas since 128 takes two bytes as
// a varint
writer.Append(128, 1, 0)
if writer.Len() != 2 || len(writer.Bytes()) != 2 {
t.Errorf("got %d", writer.Len())
}
reader = newSparseReader(writer.Bytes())
if reader.Done() {
t.Errorf("shouldn't be done")
}
if reader.Peek() != 126 {
t.Errorf("got %d", reader.Peek())
}
if reader.Peek() != 126 {
t.Errorf("got %d", reader.Peek())
}
reader.Advance()
if reader.Done() {
t.Errorf("shouldn't be done")
}
if reader.Peek() != 128 {
t.Errorf("got %d", reader.Peek())
}
reader.Advance()
if !reader.Done() {
t.Errorf("should be done")
}
}
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