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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package file
import (
"strings"
"testing"
"github.com/apache/arrow-go/v18/arrow/bitutil"
"github.com/apache/arrow-go/v18/parquet/internal/bmi"
"github.com/apache/arrow-go/v18/parquet/internal/utils"
"github.com/stretchr/testify/assert"
)
func bitmapToString(bitmap []byte, bitCount int64) string {
var bld strings.Builder
bld.Grow(int(bitCount))
for i := 0; i < int(bitCount); i++ {
if bitutil.BitIsSet(bitmap, i) {
bld.WriteByte('1')
} else {
bld.WriteByte('0')
}
}
return bld.String()
}
func TestDefLevelsToBitmap(t *testing.T) {
defLevels := []int16{3, 3, 3, 2, 3, 3, 3, 3, 3}
validBits := []byte{2, 0}
var info LevelInfo
info.DefLevel = 3
info.RepLevel = 1
var io ValidityBitmapInputOutput
io.ReadUpperBound = int64(len(defLevels))
io.Read = -1
io.ValidBits = validBits
DefLevelsToBitmap(defLevels, info, &io)
assert.Equal(t, int64(9), io.Read)
assert.Equal(t, int64(1), io.NullCount)
// call again with 0 definition levels make sure that valid bits is unmodified
curByte := validBits[1]
io.NullCount = 0
DefLevelsToBitmap(defLevels[:0], info, &io)
assert.Zero(t, io.Read)
assert.Zero(t, io.NullCount)
assert.Equal(t, curByte, validBits[1])
}
func TestDefLevelsToBitmapPowerOf2(t *testing.T) {
defLevels := []int16{3, 3, 3, 2, 3, 3, 3, 3}
validBits := []byte{1, 0}
var (
info LevelInfo
io ValidityBitmapInputOutput
)
info.RepLevel = 1
info.DefLevel = 3
io.Read = -1
io.ReadUpperBound = int64(len(defLevels))
io.ValidBits = validBits
DefLevelsToBitmap(defLevels[4:8], info, &io)
assert.Equal(t, int64(4), io.Read)
assert.Zero(t, io.NullCount)
}
func TestGreaterThanBitmapGeneratesExpectedBitmasks(t *testing.T) {
defLevels := []int16{
0, 1, 2, 3, 4, 5, 6, 7, 0, 1, 2, 3, 4, 5, 6, 7,
0, 1, 2, 3, 4, 5, 6, 7, 0, 1, 2, 3, 4, 5, 6, 7,
0, 1, 2, 3, 4, 5, 6, 7, 0, 1, 2, 3, 4, 5, 6, 7,
0, 1, 2, 3, 4, 5, 6, 7, 0, 1, 2, 3, 4, 5, 6, 7}
tests := []struct {
name string
num int
rhs int16
expected uint64
}{
{"no levels", 0, 0, 0},
{"64 and 8", 64, 8, 0},
{"64 and -1", 64, -1, 0xFFFFFFFFFFFFFFFF},
// should be zero padded
{"zero pad 47, -1", 47, -1, 0x7FFFFFFFFFFF},
{"zero pad 64 and 6", 64, 6, 0x8080808080808080},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
assert.Equal(t, tt.expected, bmi.GreaterThanBitmap(defLevels[:tt.num], tt.rhs))
})
}
}
func TestWithRepetitionlevelFiltersOutEmptyListValues(t *testing.T) {
validityBitmap := make([]byte, 8)
io := ValidityBitmapInputOutput{
ReadUpperBound: 64,
Read: 1,
NullCount: 5,
ValidBits: validityBitmap,
ValidBitsOffset: 1,
}
info := LevelInfo{
RepeatedAncestorDefLevel: 1,
DefLevel: 2,
RepLevel: 1,
}
defLevels := []int16{0, 0, 0, 2, 2, 1, 0, 2}
DefLevelsToBitmap(defLevels, info, &io)
assert.Equal(t, bitmapToString(validityBitmap, 8), "01101000")
for _, x := range validityBitmap[1:] {
assert.Zero(t, x)
}
assert.EqualValues(t, 6, io.NullCount)
assert.EqualValues(t, 4, io.Read)
}
type MultiLevelTestData struct {
defLevels []int16
repLevels []int16
}
func TriplNestedList() MultiLevelTestData {
// Triply nested list values borrow from write_path
// [null, [[1, null, 3], []], []],
// [[[]], [[], [1, 2]], null, [[3]]],
// null,
// []
return MultiLevelTestData{
defLevels: []int16{2, 7, 6, 7, 5, 3, // first row
5, 5, 7, 7, 2, 7, // second row
0, // third row
1},
repLevels: []int16{0, 1, 3, 3, 2, 1, // first row
0, 1, 2, 3, 1, 1, // second row
0, 0},
}
}
func TestActualCase(t *testing.T) {
out := make([]byte, 512)
defs := make([]int16, 64)
for i := range defs {
defs[i] = 3
}
defs[0] = 0
defs[25] = 0
defs[33] = 0
defs[49] = 0
defs[58] = 0
defs[59] = 0
defs[60] = 0
defs[61] = 0
remaining := int64(4096)
info := LevelInfo{
NullSlotUsage: 0,
DefLevel: 3,
RepLevel: 1,
RepeatedAncestorDefLevel: 2,
}
wr := utils.NewFirstTimeBitmapWriter(out, 0, 4096)
v := defLevelsBatchToBitmap(defs, remaining, info, wr, true)
assert.EqualValues(t, 56, v)
assert.Equal(t, []byte{255, 255, 255, 255}, out[:4])
}
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