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
72
73
74
75
76
|
// Copyright (C) 2019-2023 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package merkletrie
import (
"math/bits"
"testing"
"github.com/algorand/go-algorand/test/partitiontest"
"github.com/stretchr/testify/require"
)
func TestBitSet(t *testing.T) {
partitiontest.PartitionTest(t)
var a, b bitset
// set the bits in a different order, and see if we're ending with the same set.
for i := 0; i <= 255; i += 2 {
a.SetBit(byte(i))
b.SetBit(byte(256 - i))
}
require.Equal(t, a, b)
for i := 0; i <= 255; i += 2 {
require.NotZero(t, a.Bit(byte(i)))
}
for i := 1; i <= 255; i += 2 {
require.Zero(t, a.Bit(byte(i)))
}
// clear the bits at different order, and testing that the bits were cleared correctly.
for i := 0; i <= 255; i += 32 {
a.ClearBit(byte(i))
b.ClearBit(byte(256 - i))
}
require.Equal(t, a, b)
for i := 0; i <= 255; i += 32 {
require.Zero(t, a.Bit(byte(i)))
}
// clear all bits ( some would get cleared more than once )
for i := 0; i <= 255; i += 2 {
a.ClearBit(byte(i))
}
// check that the bitset is zero.
require.True(t, a.IsZero())
}
// TestBitSetOneBit test that only one bit is being set when we call SetBit
func TestBitSetOneBit(t *testing.T) {
partitiontest.PartitionTest(t)
for i := 0; i < 256; i++ {
var a bitset
a.SetBit(byte(i))
require.Equal(t, 1, bits.OnesCount64(a.d[0])+bits.OnesCount64(a.d[1])+bits.OnesCount64(a.d[2])+bits.OnesCount64(a.d[3]))
}
}
|
