Files
fscan/common/parsers/host_iterator_test.go
T

106 lines
2.6 KiB
Go

package parsers
import (
"context"
"os"
"reflect"
"strings"
"testing"
)
func TestHostIteratorCIDRBatch(t *testing.T) {
iter, err := NewHostIterator("192.168.1.0/30", "", "")
if err != nil {
t.Fatalf("NewHostIterator error = %v", err)
}
defer iter.Close()
batch, err := iter.NextBatch(context.Background(), 10)
if err != nil {
t.Fatalf("NextBatch error = %v", err)
}
want := []string{"192.168.1.1", "192.168.1.2"}
if !reflect.DeepEqual(batch, want) {
t.Fatalf("batch = %#v, want %#v", batch, want)
}
}
func TestHostIteratorDoesNotExpandWholeRangeAtOnce(t *testing.T) {
iter, err := NewHostIterator("10", "", "")
if err != nil {
t.Fatalf("NewHostIterator error = %v", err)
}
defer iter.Close()
batch, err := iter.NextBatch(context.Background(), 3)
if err != nil {
t.Fatalf("NextBatch error = %v", err)
}
want := []string{"10.0.0.1", "10.0.0.2", "10.0.0.3"}
if !reflect.DeepEqual(batch, want) {
t.Fatalf("batch = %#v, want %#v", batch, want)
}
}
func TestHostIteratorExcludeCIDR(t *testing.T) {
iter, err := NewHostIterator("192.168.1.0/29", "", "192.168.1.2-192.168.1.4")
if err != nil {
t.Fatalf("NewHostIterator error = %v", err)
}
defer iter.Close()
batch, err := iter.NextBatch(context.Background(), 10)
if err != nil {
t.Fatalf("NextBatch error = %v", err)
}
want := []string{"192.168.1.1", "192.168.1.5", "192.168.1.6"}
if !reflect.DeepEqual(batch, want) {
t.Fatalf("batch = %#v, want %#v", batch, want)
}
}
func TestHostIteratorAcceptsMultipleExcludeSources(t *testing.T) {
iter, err := NewHostIterator("192.168.1.0/29", "", "192.168.1.2", "192.168.1.5")
if err != nil {
t.Fatalf("NewHostIterator error = %v", err)
}
defer iter.Close()
batch, err := iter.NextBatch(context.Background(), 10)
if err != nil {
t.Fatalf("NextBatch error = %v", err)
}
want := []string{"192.168.1.1", "192.168.1.3", "192.168.1.4", "192.168.1.6"}
if !reflect.DeepEqual(batch, want) {
t.Fatalf("batch = %#v, want %#v", batch, want)
}
}
func TestHostIteratorReadsLongHostFileLine(t *testing.T) {
dir := t.TempDir()
path := dir + "/hosts.txt"
longPrefix := strings.Repeat("a", 70*1024)
host := longPrefix + ".example.com"
if err := os.WriteFile(path, []byte(host+"\n"), 0o600); err != nil {
t.Fatalf("WriteFile error = %v", err)
}
iter, err := NewHostIterator("", path)
if err != nil {
t.Fatalf("NewHostIterator error = %v", err)
}
defer iter.Close()
batch, err := iter.NextBatch(context.Background(), 1)
if err != nil {
t.Fatalf("NextBatch error = %v", err)
}
if !reflect.DeepEqual(batch, []string{host}) {
t.Fatalf("batch = %#v, want long host", batch)
}
}