mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
synced 2025-01-10 04:51:20 +00:00
78 lines
1.6 KiB
Go
78 lines
1.6 KiB
Go
package iter
|
|
|
|
import (
|
|
"fmt"
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
func ToArr[T any](s Unary[T]) ([]T, error) {
|
|
res := make([]T, 0)
|
|
for s.HasNext() {
|
|
k, err := s.Next()
|
|
if err != nil {
|
|
return res, err
|
|
}
|
|
res = append(res, k)
|
|
}
|
|
return res, nil
|
|
}
|
|
|
|
func ToDualArray[K, V any](s Dual[K, V]) (keys []K, values []V, err error) {
|
|
for s.HasNext() {
|
|
k, v, err := s.Next()
|
|
if err != nil {
|
|
return keys, values, err
|
|
}
|
|
keys = append(keys, k)
|
|
values = append(values, v)
|
|
}
|
|
return keys, values, nil
|
|
}
|
|
|
|
func ExpectEqualU64(tb testing.TB, s1, s2 Unary[uint64]) {
|
|
tb.Helper()
|
|
ExpectEqual[uint64](tb, s1, s2)
|
|
}
|
|
func ExpectEqual[V comparable](tb testing.TB, s1, s2 Unary[V]) {
|
|
tb.Helper()
|
|
for s1.HasNext() && s2.HasNext() {
|
|
k1, e1 := s1.Next()
|
|
k2, e2 := s2.Next()
|
|
require.Equal(tb, k1, k2)
|
|
require.Equal(tb, e1 == nil, e2 == nil)
|
|
}
|
|
|
|
has1 := s1.HasNext()
|
|
has2 := s2.HasNext()
|
|
var label string
|
|
if has1 {
|
|
v1, _ := s1.Next()
|
|
label = fmt.Sprintf("v1: %v", v1)
|
|
}
|
|
if has2 {
|
|
v2, _ := s2.Next()
|
|
label += fmt.Sprintf(" v2: %v", v2)
|
|
}
|
|
require.False(tb, has1, label)
|
|
require.False(tb, has2, label)
|
|
}
|
|
|
|
// PairsWithErrorIter - return N, keys and then error
|
|
type PairsWithErrorIter struct {
|
|
errorAt, i int
|
|
}
|
|
|
|
func PairsWithError(errorAt int) *PairsWithErrorIter {
|
|
return &PairsWithErrorIter{errorAt: errorAt}
|
|
}
|
|
func (m *PairsWithErrorIter) HasNext() bool { return true }
|
|
func (m *PairsWithErrorIter) Next() ([]byte, []byte, error) {
|
|
if m.i >= m.errorAt {
|
|
return nil, nil, fmt.Errorf("expected error at iteration: %d", m.errorAt)
|
|
}
|
|
m.i++
|
|
return []byte(fmt.Sprintf("%x", m.i)), []byte(fmt.Sprintf("%x", m.i)), nil
|
|
}
|