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chunk serialization fixes and fuzzies

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This commit is contained in:
adman
2026-04-19 16:10:09 +02:00
parent dcb42f1970
commit c2777f2ca9
7 changed files with 161 additions and 53 deletions
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level/packet_test.go
+63 -20
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@@ -2,6 +2,7 @@ package level_test
import (
"bytes"
"math"
"slices"
"testing"
@@ -10,53 +11,95 @@ import (
"github.com/admin-else/strom/util"
)
var RedMushroomBlock = util.MustOk(data.LookupBlockByName("1.21.11", "red_mushroom_block"))
var TheVoid = util.MustOk(data.LookupBiomeByName("1.21.11", "the_void"))
var TestVersion = "1.21.11"
var RedMushroomBlock = util.MustOk(data.LookupBlockByName(TestVersion, "red_mushroom_block"))
var TheVoid = util.MustOk(data.LookupBiomeByName(TestVersion, "the_void"))
func TestPackSections(t *testing.T) {
blocks := util.MakeSingleValuedSlice(RedMushroomBlock.DefaultState, level.BlocksPerChunkSection)
biomes := util.MakeSingleValuedSlice(TheVoid.Id, level.BiomesPerChunkSection)
b := bytes.NewBuffer(nil)
err := level.PackSection(blocks, biomes, b)
err := level.PackSection(blocks, biomes, TestVersion, b)
if err != nil {
t.Fatal(err)
return
}
}
func FuzzPackSection(f *testing.F) {
corpusBlocks := util.MakeSingleValuedSlice(int32(1), level.BlocksPerChunkSection)
corpusBiomes := util.MakeSingleValuedSlice(int32(1), level.BiomesPerChunkSection)
b := bytes.NewBuffer(nil)
_ = level.PackSection(corpusBlocks, corpusBiomes, TestVersion, b)
f.Add(b.Bytes())
f.Fuzz(func(t *testing.T, raw []byte) {
r := bytes.NewReader(raw)
t.Logf("Raw: %v", raw)
blocks, biomes, err := level.UnpackSection(r, TestVersion)
if err != nil {
t.Skipf("unpacking failed: %v", err)
return
}
t.Logf("Blocks: %#v, Biomes: %#v", blocks, biomes)
buf := bytes.NewBuffer(nil)
err = level.PackSection(blocks, biomes, TestVersion, buf)
if err != nil {
t.Fatal(err)
return
}
t.Logf("Packed: %v", buf.Bytes())
newBlocks, newBimoes, err := level.UnpackSection(buf, TestVersion)
if err != nil {
t.Fatal(err)
return
}
if !slices.Equal(blocks, newBlocks) {
t.Error("Blocks are not equal")
}
if !slices.Equal(biomes, newBimoes) {
t.Error("Biomes are not equal")
}
})
}
func TestDataLongsTest(t *testing.T) {
var bpes = []int32{1, 2, 3, 4, 5, 10, 31}
var bpes = []uint8{1, 2, 3, 4, 5, 10, 31}
var testValues = [][]int32{{1}, {1, 2}, {1, 2, 3}, {1, 2, 3, 4}, {1, 2, 3, 4, 5}, {999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999}}
for _, bpe := range bpes {
maxValue := int32((1 << bpe) - 1)
t.Logf("BPE: %v, Maxvalue: %v", bpe, maxValue)
t.Logf("BPE: %v", bpe)
for _, values := range testValues {
t.Logf("Data: %v", values)
skip := false
for _, v := range values {
if v >= maxValue {
skip = true
break
}
}
if skip {
t.Log("Skipping because of overflow")
longs, err := level.DataToLongs(values, bpe)
if err != nil {
t.Logf("Error: %v", err)
continue
}
longs := level.DataToLongs(values, bpe)
t.Logf("Longs: %v", longs)
dataNew := level.LongsToData(longs, int32(len(values)), bpe)
t.Logf("Data new: %v", dataNew)
if !slices.Equal(values, dataNew) {
t.Error("Data is not equal")
} else {
t.Log("Data conversion successful")
}
t.Log("Data conversion successful")
}
}
}
func TestWeirdBiomesData(t *testing.T) {
biomes := []int32{48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 67, 66, 65, 57, 56, 55, 50, 49}
var b = bytes.NewBuffer(nil)
unique := util.GetUniqueSlice(biomes)
bpe := uint8(math.Ceil(math.Log2(float64(len(unique)))))
err := level.PackLongData(biomes, bpe, b)
_ = err
}