[WIP] Added DHCPv4 server (#178)

* Added DHCPv4 server
* Added more modifiers
* Fixed some bugs

1 files changed, 38 insertions, 1 deletions

diff --git a/dhcpv4/modifiers_test.go b/dhcpv4/modifiers_test.go
index c20558e..ce4ff38 100644
--- a/dhcpv4/modifiers_test.go
+++ b/dhcpv4/modifiers_test.go
@@ -7,8 +7,45 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
+func TestTransactionIDModifier(t *testing.T) {
+	d, err := New()
+	require.NoError(t, err)
+	d = WithTransactionID(0xddccbbaa)(d)
+	require.Equal(t, uint32(0xddccbbaa), d.TransactionID())
+}
+
+func TestBroadcastModifier(t *testing.T) {
+	d, err := New()
+	require.NoError(t, err)
+	// set and test broadcast
+	d = WithBroadcast(true)(d)
+	require.Equal(t, true, d.IsBroadcast())
+	// set and test unicast
+	d = WithBroadcast(false)(d)
+	require.Equal(t, true, d.IsUnicast())
+}
+
+func TestHwAddrModifier(t *testing.T) {
+	d, err := New()
+	require.NoError(t, err)
+	hwaddr := [16]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf}
+	d = WithHwAddr(hwaddr[:])(d)
+	require.Equal(t, hwaddr, d.ClientHwAddr())
+}
+
+func TestWithOptionModifier(t *testing.T) {
+	d, err := New()
+	require.NoError(t, err)
+	d = WithOption(&OptDomainName{DomainName: "slackware.it"})(d)
+	opt := d.GetOneOption(OptionDomainName)
+	require.NotNil(t, opt)
+	dnOpt := opt.(*OptDomainName)
+	require.Equal(t, "slackware.it", dnOpt.DomainName)
+}
+
 func TestUserClassModifier(t *testing.T) {
-	d, _ := New()
+	d, err := New()
+	require.NoError(t, err)
 	userClass := WithUserClass([]byte("linuxboot"), false)
 	d = userClass(d)
 	expected := []byte{