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// Copyright 2018 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package bitvector
import "testing"
func TestBitvectorNew(t *testing.T) {
_, err := New(0)
if err != errInvalidLength {
t.Errorf("expected err %v, got %v", errInvalidLength, err)
}
_, err = NewFromBytes(nil, 0)
if err != errInvalidLength {
t.Errorf("expected err %v, got %v", errInvalidLength, err)
}
_, err = NewFromBytes([]byte{0}, 9)
if err != errInvalidLength {
t.Errorf("expected err %v, got %v", errInvalidLength, err)
}
_, err = NewFromBytes(make([]byte, 8), 8)
if err != nil {
t.Error(err)
}
}
func TestBitvectorGetSet(t *testing.T) {
for _, length := range []int{
1,
2,
4,
8,
9,
15,
16,
} {
bv, err := New(length)
if err != nil {
t.Errorf("error for length %v: %v", length, err)
}
for i := 0; i < length; i++ {
if bv.Get(i) {
t.Errorf("expected false for element on index %v", i)
}
}
func() {
defer func() {
if err := recover(); err == nil {
t.Errorf("expecting panic")
}
}()
bv.Get(length + 8)
}()
for i := 0; i < length; i++ {
bv.Set(i, true)
for j := 0; j < length; j++ {
if j == i {
if !bv.Get(j) {
t.Errorf("element on index %v is not set to true", i)
}
} else {
if bv.Get(j) {
t.Errorf("element on index %v is not false", i)
}
}
}
bv.Set(i, false)
if bv.Get(i) {
t.Errorf("element on index %v is not set to false", i)
}
}
}
}
func TestBitvectorNewFromBytesGet(t *testing.T) {
bv, err := NewFromBytes([]byte{8}, 8)
if err != nil {
t.Error(err)
}
if !bv.Get(3) {
t.Fatalf("element 3 is not set to true: state %08b", bv.b[0])
}
}
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