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dima
2026-05-10 00:59:47 +00:00
parent 271046231c
commit 9b38586ed8
30 changed files with 3560 additions and 1823 deletions
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298
chunkenc/chunkenc_test.go Normal file
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package chunkenc
import (
"fmt"
"testing"
"gordenko.dev/dima/qb/conbuf"
)
func TestCumdelta(t *testing.T) {
var (
fracDigits byte = 0
buf = conbuf.New(nil)
value float64
done bool
)
c := NewReverseCumulativeDeltaCompressor(buf, 0, fracDigits)
// c.Append(1.55)
// c.Append(23)
// c.Append(23)
// c.Append(23)
// c.Append(23.5)
c.Append(130)
c.Append(191)
c.Append(248)
c.Append(305)
//fmt.Printf("pos: %d\n", c.pos)
//fmt.Printf("%d\n", buf.Chunks()[0])
d := NewReverseCumulativeDeltaDecompressor(buf, c.Size(), fracDigits)
for range 8 {
value, done = d.NextValue()
fmt.Println(value, done)
}
}
func TestInsdelta(t *testing.T) {
var (
fracDigits byte = 2
buf = conbuf.New(nil)
value float64
done bool
)
c := NewReverseInstantDeltaCompressor(buf, 0, fracDigits)
c.Append(-1.55)
c.Append(23)
//fmt.Printf("pos: %d\n", c.pos)
//fmt.Printf("%d\n", buf.Chunks()[0])
c.Append(23)
c.Append(23)
c.Append(-23.5)
//fmt.Printf("pos: %d\n", c.pos)
//fmt.Printf("%d\n", buf.Chunks()[0])
d := NewReverseInstantDeltaDecompressor(buf, c.Size(), fracDigits)
for range 8 {
value, done = d.NextValue()
fmt.Println(value, done)
}
}
func TestTimeDelta(t *testing.T) {
var (
buf = conbuf.New(nil)
value uint32
done bool
)
c := NewReverseTimeDeltaCompressor(buf, 0)
c.Append(10)
//c.Append(131)
//fmt.Printf("pos: %d\n", c.pos)
//fmt.Printf("%d\n", buf.Chunks()[0])
c.Append(70)
c.Append(130)
c.Append(191)
c.Append(248)
c.Append(305)
c.Append(330)
c.Append(390)
c.Append(450)
// fmt.Printf("pos: %d\n", c.pos)
// fmt.Printf("%d\n", buf.Chunks()[0])
//c.Sync()
bound := c.GetState()
fmt.Println("AFTER SYNC")
fmt.Printf("pos: %d\n", c.pos)
chunks := buf.Chunks()
if len(chunks) > 0 {
fmt.Printf("%d\n", chunks[0])
}
d := NewReverseTimeDeltaDecompressor(buf, c.Size())
d.RestoreFromBound(bound)
//d.RestoreFromEnd()
for range 12 {
value, done = d.NextValue()
fmt.Println(value, done)
}
}
func TestCumdeltaBound(t *testing.T) {
var (
fracDigits byte = 0
buf = conbuf.New(nil)
value float64
done bool
)
c := NewReverseCumulativeDeltaCompressor(buf, 0, fracDigits)
// c.Append(1.55)
// c.Append(23)
// c.Append(23)
// c.Append(23)
// c.Append(23.5)
c.Append(10)
c.Append(70)
c.Append(130)
// fmt.Printf("pos: %d\n", c.pos)
// fmt.Printf("%d\n", buf.Chunks()[0])
c.Append(191)
// fmt.Printf("pos: %d\n", c.pos)
// fmt.Printf("%d\n", buf.Chunks()[0])
c.Append(191)
fmt.Printf("pos: %d\n", c.pos)
fmt.Printf("%d\n", buf.Chunks()[0])
//////////////////////////
bound := c.GetState()
fmt.Printf("bound: pos=%d, h=%d\n", bound.Pos, bound.H)
c.Append(248)
c.Append(305)
fmt.Printf("pos: %d\n", c.pos)
fmt.Printf("%d\n", buf.Chunks()[0])
d := NewReverseCumulativeDeltaDecompressor(buf, c.Size(), fracDigits)
d.RestoreFromEnd()
for range 8 {
value, done = d.NextValue()
fmt.Println(value, done)
}
boundDecompressor := NewReverseCumulativeDeltaDecompressor(buf, c.Size(), fracDigits)
boundDecompressor.RestoreFromBound(bound)
fmt.Println("from bound:")
for range 8 {
value, done = boundDecompressor.NextValue()
fmt.Println(value, done)
}
}
func TestInsdeltaBound(t *testing.T) {
var (
fracDigits byte = 0
buf = conbuf.New(nil)
value float64
done bool
)
c := NewReverseInstantDeltaCompressor(buf, 0, fracDigits)
// c.Append(1.55)
// c.Append(23)
// c.Append(23)
// c.Append(23)
// c.Append(23.5)
c.Append(10)
c.Append(70)
c.Append(130)
// fmt.Printf("pos: %d\n", c.pos)
// fmt.Printf("%d\n", buf.Chunks()[0])
c.Append(191)
// fmt.Printf("pos: %d\n", c.pos)
// fmt.Printf("%d\n", buf.Chunks()[0])
c.Append(191)
fmt.Printf("pos: %d\n", c.pos)
fmt.Printf("%d\n", buf.Chunks()[0])
//////////////////////////
bound := c.GetState()
fmt.Printf("bound: pos=%d, h=%d\n", bound.Pos, bound.H)
c.Append(248)
c.Append(305)
fmt.Printf("pos: %d\n", c.pos)
fmt.Printf("%d\n", buf.Chunks()[0])
d := NewReverseInstantDeltaDecompressor(buf, c.Size(), fracDigits)
d.RestoreFromEnd()
for range 8 {
value, done = d.NextValue()
fmt.Println(value, done)
}
boundDecompressor := NewReverseInstantDeltaDecompressor(buf, c.Size(), fracDigits)
boundDecompressor.RestoreFromBound(bound)
fmt.Println("from bound:")
for range 8 {
value, done = boundDecompressor.NextValue()
fmt.Println(value, done)
}
}
func TestInsdeltaBound2(t *testing.T) {
var (
fracDigits byte = 0
buf = conbuf.New(nil)
value float64
done bool
)
c := NewReverseInstantDeltaCompressor(buf, 0, fracDigits)
// c.Append(1.55)
// c.Append(23)
// c.Append(23)
// c.Append(23)
// c.Append(23.5)
c.Append(305)
c.Append(248)
c.Append(191)
// fmt.Printf("pos: %d\n", c.pos)
// fmt.Printf("%d\n", buf.Chunks()[0])
c.Append(191)
// fmt.Printf("pos: %d\n", c.pos)
// fmt.Printf("%d\n", buf.Chunks()[0])
c.Append(130)
fmt.Printf("pos: %d\n", c.pos)
fmt.Printf("%d\n", buf.Chunks()[0])
//////////////////////////
bound := c.GetState()
fmt.Printf("bound: pos=%d, h=%d\n", bound.Pos, bound.H)
c.Append(70)
c.Append(10)
fmt.Printf("pos: %d\n", c.pos)
fmt.Printf("%d\n", buf.Chunks()[0])
d := NewReverseInstantDeltaDecompressor(buf, c.Size(), fracDigits)
d.RestoreFromEnd()
for range 8 {
value, done = d.NextValue()
fmt.Println(value, done)
}
boundDecompressor := NewReverseInstantDeltaDecompressor(buf, c.Size(), fracDigits)
boundDecompressor.RestoreFromBound(bound)
fmt.Println("from bound:")
for range 8 {
value, done = boundDecompressor.NextValue()
fmt.Println(value, done)
}
}