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// Copyright 2016 CNI authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package hwaddr_test
import (
"net"
"github.com/containernetworking/cni/pkg/utils/hwaddr"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("Hwaddr", func() {
Context("Generate Hardware Address", func() {
It("generate hardware address based on ipv4 address", func() {
testCases := []struct {
ip net.IP
expectedMAC net.HardwareAddr
}{
{
ip: net.ParseIP("10.0.0.2"),
expectedMAC: (net.HardwareAddr)(append(hwaddr.PrivateMACPrefix, 0x0a, 0x00, 0x00, 0x02)),
},
{
ip: net.ParseIP("10.250.0.244"),
expectedMAC: (net.HardwareAddr)(append(hwaddr.PrivateMACPrefix, 0x0a, 0xfa, 0x00, 0xf4)),
},
{
ip: net.ParseIP("172.17.0.2"),
expectedMAC: (net.HardwareAddr)(append(hwaddr.PrivateMACPrefix, 0xac, 0x11, 0x00, 0x02)),
},
{
ip: net.IPv4(byte(172), byte(17), byte(0), byte(2)),
expectedMAC: (net.HardwareAddr)(append(hwaddr.PrivateMACPrefix, 0xac, 0x11, 0x00, 0x02)),
},
}
for _, tc := range testCases {
mac, err := hwaddr.GenerateHardwareAddr4(tc.ip, hwaddr.PrivateMACPrefix)
Expect(err).NotTo(HaveOccurred())
Expect(mac).To(Equal(tc.expectedMAC))
}
})
It("return error if input is not ipv4 address", func() {
testCases := []net.IP{
net.ParseIP(""),
net.ParseIP("2001:db8:0:1:1:1:1:1"),
}
for _, tc := range testCases {
_, err := hwaddr.GenerateHardwareAddr4(tc, hwaddr.PrivateMACPrefix)
Expect(err).To(BeAssignableToTypeOf(hwaddr.SupportIp4OnlyErr{}))
}
})
It("return error if prefix is invalid", func() {
_, err := hwaddr.GenerateHardwareAddr4(net.ParseIP("10.0.0.2"), []byte{0x58})
Expect(err).To(BeAssignableToTypeOf(hwaddr.InvalidPrefixLengthErr{}))
})
})
})
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