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