go-micro.dev/v5@v5.12.0/util/addr/addr_test.go (about)

     1  package addr
     2  
     3  import (
     4  	"github.com/stretchr/testify/assert"
     5  	"net"
     6  	"testing"
     7  )
     8  
     9  func TestIsLocal(t *testing.T) {
    10  	testData := []struct {
    11  		addr   string
    12  		expect bool
    13  	}{
    14  		{"localhost", true},
    15  		{"localhost:8080", true},
    16  		{"127.0.0.1", true},
    17  		{"127.0.0.1:1001", true},
    18  		{"80.1.1.1", false},
    19  	}
    20  
    21  	for _, d := range testData {
    22  		res := IsLocal(d.addr)
    23  		if res != d.expect {
    24  			t.Fatalf("expected %t got %t", d.expect, res)
    25  		}
    26  	}
    27  }
    28  
    29  func TestExtractor(t *testing.T) {
    30  	testData := []struct {
    31  		addr   string
    32  		expect string
    33  		parse  bool
    34  	}{
    35  		{"127.0.0.1", "127.0.0.1", false},
    36  		{"10.0.0.1", "10.0.0.1", false},
    37  		{"", "", true},
    38  		{"0.0.0.0", "", true},
    39  		{"[::]", "", true},
    40  	}
    41  
    42  	for _, d := range testData {
    43  		addr, err := Extract(d.addr)
    44  		if err != nil {
    45  			t.Errorf("Unexpected error %v", err)
    46  		}
    47  
    48  		if d.parse {
    49  			ip := net.ParseIP(addr)
    50  			if ip == nil {
    51  				t.Error("Unexpected nil IP")
    52  			}
    53  		} else if addr != d.expect {
    54  			t.Errorf("Expected %s got %s", d.expect, addr)
    55  		}
    56  	}
    57  }
    58  
    59  func TestFindIP(t *testing.T) {
    60  	localhost, _ := net.ResolveIPAddr("ip", "127.0.0.1")
    61  	localhostIPv6, _ := net.ResolveIPAddr("ip", "::1")
    62  	privateIP, _ := net.ResolveIPAddr("ip", "10.0.0.1")
    63  	publicIP, _ := net.ResolveIPAddr("ip", "100.0.0.1")
    64  	publicIPv6, _ := net.ResolveIPAddr("ip", "2001:0db8:85a3:0000:0000:8a2e:0370:7334")
    65  
    66  	testCases := []struct {
    67  		addrs  []net.Addr
    68  		ip     net.IP
    69  		errMsg string
    70  	}{
    71  		{
    72  			addrs:  []net.Addr{},
    73  			ip:     nil,
    74  			errMsg: ErrIPNotFound.Error(),
    75  		},
    76  		{
    77  			addrs: []net.Addr{localhost},
    78  			ip:    localhost.IP,
    79  		},
    80  		{
    81  			addrs: []net.Addr{localhost, localhostIPv6},
    82  			ip:    localhost.IP,
    83  		},
    84  		{
    85  			addrs: []net.Addr{localhostIPv6},
    86  			ip:    localhostIPv6.IP,
    87  		},
    88  		{
    89  			addrs: []net.Addr{privateIP, localhost},
    90  			ip:    privateIP.IP,
    91  		},
    92  		{
    93  			addrs: []net.Addr{privateIP, publicIP, localhost},
    94  			ip:    privateIP.IP,
    95  		},
    96  		{
    97  			addrs: []net.Addr{publicIP, privateIP, localhost},
    98  			ip:    privateIP.IP,
    99  		},
   100  		{
   101  			addrs: []net.Addr{publicIP, localhost},
   102  			ip:    publicIP.IP,
   103  		},
   104  		{
   105  			addrs: []net.Addr{publicIP, localhostIPv6},
   106  			ip:    publicIP.IP,
   107  		},
   108  		{
   109  			addrs: []net.Addr{localhostIPv6, publicIP},
   110  			ip:    publicIP.IP,
   111  		},
   112  		{
   113  			addrs: []net.Addr{localhostIPv6, publicIPv6, publicIP},
   114  			ip:    publicIPv6.IP,
   115  		},
   116  		{
   117  			addrs: []net.Addr{publicIP, publicIPv6},
   118  			ip:    publicIP.IP,
   119  		},
   120  	}
   121  
   122  	for _, tc := range testCases {
   123  		ip, err := findIP(tc.addrs)
   124  		if tc.errMsg == "" {
   125  			assert.Nil(t, err)
   126  			assert.Equal(t, tc.ip.String(), ip.String())
   127  		} else {
   128  			assert.NotNil(t, err)
   129  			assert.Equal(t, tc.errMsg, err.Error())
   130  		}
   131  	}
   132  }