1 files changed, 73 insertions, 0 deletions
diff --git a/parse_test.go b/parse_test.go
index a915910..e33fe76 100644
--- a/parse_test.go
+++ b/parse_test.go
@@ -1,6 +1,8 @@
 package arg
 
 import (
+	"net"
+	"net/mail"
 	"os"
 	"strings"
 	"testing"
@@ -541,3 +543,74 @@ func TestSliceUnmarhsaler(t *testing.T) {
 	assert.EqualValues(t, 5, (*args.Foo)[0])
 	assert.Equal(t, "xyz", args.Bar)
 }
+
+func TestIP(t *testing.T) {
+	var args struct {
+		Host net.IP
+	}
+	err := parse("--host 192.168.0.1", &args)
+	require.NoError(t, err)
+	assert.Equal(t, "192.168.0.1", args.Host.String())
+}
+
+func TestPtrToIP(t *testing.T) {
+	var args struct {
+		Host *net.IP
+	}
+	err := parse("--host 192.168.0.1", &args)
+	require.NoError(t, err)
+	assert.Equal(t, "192.168.0.1", args.Host.String())
+}
+
+func TestIPSlice(t *testing.T) {
+	var args struct {
+		Host []net.IP
+	}
+	err := parse("--host 192.168.0.1 127.0.0.1", &args)
+	require.NoError(t, err)
+	require.Len(t, args.Host, 2)
+	assert.Equal(t, "192.168.0.1", args.Host[0].String())
+	assert.Equal(t, "127.0.0.1", args.Host[1].String())
+}
+
+func TestInvalidIPAddress(t *testing.T) {
+	var args struct {
+		Host net.IP
+	}
+	err := parse("--host xxx", &args)
+	assert.Error(t, err)
+}
+
+func TestMAC(t *testing.T) {
+	var args struct {
+		Host net.HardwareAddr
+	}
+	err := parse("--host 0123.4567.89ab", &args)
+	require.NoError(t, err)
+	assert.Equal(t, "01:23:45:67:89:ab", args.Host.String())
+}
+
+func TestInvalidMac(t *testing.T) {
+	var args struct {
+		Host net.HardwareAddr
+	}
+	err := parse("--host xxx", &args)
+	assert.Error(t, err)
+}
+
+func TestMailAddr(t *testing.T) {
+	var args struct {
+		Recipient mail.Address
+	}
+	err := parse("--recipient [email protected]", &args)
+	require.NoError(t, err)
+	assert.Equal(t, "<[email protected]>", args.Recipient.String())
+}
+
+func TestInvalidMailAddr(t *testing.T) {
+	var args struct {
+		Recipient mail.Address
+	}
+	err := parse("--recipient xxx", &args)
+	assert.Error(t, err)
+}