github.com/vc42/parquet-go@v0.0.0-20240320194221-1a9adb5f23f5/null_test.go (about)

     1  //go:build go1.18
     2  
     3  package parquet
     4  
     5  import (
     6  	"reflect"
     7  	"testing"
     8  
     9  	"github.com/vc42/parquet-go/deprecated"
    10  	"github.com/vc42/parquet-go/internal/quick"
    11  )
    12  
    13  func TestNullIndex(t *testing.T) {
    14  	testNullIndex[bool](t)
    15  	testNullIndex[int](t)
    16  	testNullIndex[int32](t)
    17  	testNullIndex[int64](t)
    18  	testNullIndex[uint](t)
    19  	testNullIndex[uint32](t)
    20  	testNullIndex[uint64](t)
    21  	testNullIndex[float32](t)
    22  	testNullIndex[float64](t)
    23  	testNullIndex[[10]byte](t)
    24  	testNullIndex[[16]byte](t)
    25  	testNullIndex[deprecated.Int96](t)
    26  	testNullIndex[string](t)
    27  	testNullIndex[*struct{}](t)
    28  }
    29  
    30  func testNullIndex[T comparable](t *testing.T) {
    31  	var zero T
    32  	t.Helper()
    33  	t.Run(reflect.TypeOf(zero).String(), func(t *testing.T) {
    34  		err := quick.Check(func(data []T) bool {
    35  			if len(data) == 0 {
    36  				return true
    37  			}
    38  
    39  			want := make([]uint64, (len(data)+63)/64)
    40  			got := make([]uint64, (len(data)+63)/64)
    41  
    42  			for i := range data {
    43  				if (i % 2) == 0 {
    44  					data[i] = zero
    45  				}
    46  			}
    47  
    48  			array := makeArrayOf(data)
    49  			nullIndex[T](want, array)
    50  			nullIndexFuncOf(reflect.TypeOf(zero))(got, array)
    51  
    52  			if !reflect.DeepEqual(want, got) {
    53  				t.Errorf("unexpected null index\nwant = %064b\ngot  = %064b", want, got)
    54  				return false
    55  			}
    56  			return true
    57  		})
    58  		if err != nil {
    59  			t.Error(err)
    60  		}
    61  	})
    62  }
    63  
    64  func BenchmarkNullIndex(b *testing.B) {
    65  	benchmarkNullIndex[bool](b)
    66  	benchmarkNullIndex[int](b)
    67  	benchmarkNullIndex[int32](b)
    68  	benchmarkNullIndex[int64](b)
    69  	benchmarkNullIndex[uint](b)
    70  	benchmarkNullIndex[uint32](b)
    71  	benchmarkNullIndex[uint64](b)
    72  	benchmarkNullIndex[float32](b)
    73  	benchmarkNullIndex[float64](b)
    74  	benchmarkNullIndex[[10]byte](b)
    75  	benchmarkNullIndex[[16]byte](b)
    76  	benchmarkNullIndex[deprecated.Int96](b)
    77  	benchmarkNullIndex[string](b)
    78  	benchmarkNullIndex[[]struct{}](b)
    79  	benchmarkNullIndex[*struct{}](b)
    80  }
    81  
    82  func benchmarkNullIndex[T any](b *testing.B) {
    83  	const N = 1000
    84  
    85  	var zero T
    86  	typ := reflect.TypeOf(zero)
    87  	null := nullIndexFuncOf(typ)
    88  	data := makeArrayOf(make([]T, N))
    89  	bits := make([]uint64, (N+63)/64)
    90  
    91  	b.Run(typ.String(), func(b *testing.B) {
    92  		for i := 0; i < b.N; i++ {
    93  			null(bits, data)
    94  		}
    95  		b.SetBytes(int64(typ.Size() * N))
    96  	})
    97  }