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ipaddr_test.go
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package types_test
import (
"encoding/json"
"fmt"
"testing"
"github.com/cedar-policy/cedar-go/internal/testutil"
"github.com/cedar-policy/cedar-go/types"
)
func TestIP(t *testing.T) {
t.Parallel()
t.Run("ParseAndString", func(t *testing.T) {
t.Parallel()
tests := []struct {
in string
parses bool
out string
}{
{"0.0.0.0", true, "0.0.0.0"},
{"0.0.0.1", true, "0.0.0.1"},
{"127.0.0.1", true, "127.0.0.1"},
{"127.0.0.1/32", true, "127.0.0.1"},
{"127.0.0.1/24", true, "127.0.0.1/24"},
{"127.1.2.3/8", true, "127.1.2.3/8"},
{"::/128", true, "::"},
{"::1/128", true, "::1"},
{"2001:db8::1", true, "2001:db8::1"},
{"2001:db8::1:0:0:1", true, "2001:db8::1:0:0:1"},
{"::ffff:192.0.2.128", false, ""},
{"::ffff:c000:0280", true, "::ffff:192.0.2.128"},
{"2001:db8::1/32", true, "2001:db8::1/32"},
{"2001:db8::1:0:0:1/96", true, "2001:db8::1:0:0:1/96"},
{"::ffff:192.0.2.128/24", false, ""},
{"::ffff:192.0.2.128/120", false, ""},
{"::ffff:c000:0280/24", true, "::ffff:192.0.2.128/24"},
{"::ffff:c000:0280/120", true, "::ffff:192.0.2.128/120"},
{"6b6b:f00::32ff:ffff:6368/00", false, ""}, // leading zero(s)
{"garbage", false, ""},
{"c5c5:c5c5:c5c5:c5c5:c5c5:c5c5:c5c5:c5c5/68", true, "c5c5:c5c5:c5c5:c5c5:c5c5:c5c5:c5c5:c5c5/68"},
}
for _, tt := range tests {
tt := tt
var testName string
if tt.parses {
testName = fmt.Sprintf("%s-parses-and-prints-as-%s", tt.in, tt.out)
} else {
testName = fmt.Sprintf("%s-does-not-parse", tt.in)
}
t.Run(testName, func(t *testing.T) {
t.Parallel()
i, err := types.ParseIPAddr(tt.in)
if tt.parses {
testutil.OK(t, err)
testutil.Equals(t, i.String(), tt.out)
} else {
testutil.Error(t, err)
}
})
}
})
t.Run("Equal", func(t *testing.T) {
t.Parallel()
tests := []struct {
lhs, rhs string
equal bool
}{
{"0.0.0.0", "0.0.0.0", true},
{"0.0.0.0", "0.0.0.0/32", true},
{"127.0.0.1", "127.0.0.1", true},
{"127.0.0.1", "127.0.0.1/32", true},
{"::", "::", true},
{"::", "::/128", true},
{"::1", "::1", true},
{"::1", "::1/128", true},
{"::", "0.0.0.0", false},
{"::1", "127.0.0.1", false},
{"::ffff:c000:0280", "192.0.2.128", false},
{"1.2.3.4", "1.2.3.4", true},
{"1.2.3.4", "1.2.3.4/32", true},
{"1.2.3.4/32", "1.2.3.4/32", true},
{"1.2.3.4/24", "1.2.3.4/24", true},
{"1.2.3.0/24", "1.2.3.255/24", false},
{"1.2.3.0/24", "1.2.3.0/25", false},
{"::ffff:c000:0280/24", "::/24", false},
{"::ffff:c000:0280/120", "192.0.2.0/24", false},
{"2001:db8::1/32", "2001:db8::/32", false},
{"2001:db8::1:0:0:1/96", "2001:db8:0:0:1::/96", false},
{"c5c5:c5c5:c5c5:c5c5:c5c5:c5c5:c5c5:c5c5/68", "c5c5:c5c5:c5c5:c5c5:c5c5:5cc5:c5c5:c5c5/68", false},
}
for _, tt := range tests {
tt := tt
t.Run(fmt.Sprintf("ip(%v).Equal(ip(%v))", tt.lhs, tt.rhs), func(t *testing.T) {
t.Parallel()
lhs, err := types.ParseIPAddr(tt.lhs)
testutil.OK(t, err)
rhs, err := types.ParseIPAddr(tt.rhs)
testutil.OK(t, err)
equal := lhs.Equal(rhs)
if equal != tt.equal {
t.Fatalf("expected ip(%v).Equal(ip(%v)) to be %v instead of %v", tt.lhs, tt.rhs, tt.equal, equal)
}
if equal {
testutil.FatalIf(
t,
!lhs.Contains(rhs),
"ip(%v) and ip(%v) compare Equal but !ip(%v).contains(ip(%v))", tt.lhs, tt.rhs, tt.lhs, tt.rhs)
testutil.FatalIf(
t,
!rhs.Contains(lhs),
"ip(%v) and ip(%v) compare Equal but !ip(%v).contains(ip(%v))", tt.rhs, tt.lhs, tt.rhs, tt.lhs)
}
})
}
})
t.Run("isIPv4", func(t *testing.T) {
t.Parallel()
tests := []struct {
val string
isIPv4, isIPv6 bool
}{
{"0.0.0.0", true, false},
{"0.0.0.0/32", true, false},
{"127.0.0.1", true, false},
{"127.0.0.1/32", true, false},
{"::", false, true},
{"::1", false, true},
{"::/128", false, true},
{"::1/128", false, true},
{"::ffff:c000:0280", false, true},
{"::ffff:c000:0280/128", false, true},
{"::ffff:c000:0280/24", false, true},
{"2001:db8::1", false, true},
{"2001:db8::1:0:0:1", false, true},
{"2001:db8::1/32", false, true},
{"2001:db8::1:0:0:1/96", false, true},
}
for _, tt := range tests {
tt := tt
t.Run(fmt.Sprintf("ip(%v).isIPv{4,6}()", tt.val), func(t *testing.T) {
t.Parallel()
val, err := types.ParseIPAddr(tt.val)
testutil.OK(t, err)
isIPv4 := val.IsIPv4()
if isIPv4 != tt.isIPv4 {
t.Fatalf("expected ip(%v).isIPv4() to be %v instead of %v", tt.val, tt.isIPv4, isIPv4)
}
isIPv6 := val.IsIPv6()
if isIPv6 != tt.isIPv6 {
t.Fatalf("expected ip(%v).isIPv6() to be %v instead of %v", tt.val, tt.isIPv6, isIPv6)
}
})
}
})
t.Run("isLoopback", func(t *testing.T) {
t.Parallel()
tests := []struct {
val string
isLoopback bool
}{
{"0.0.0.0", false},
{"127.0.0.1", true},
{"127.0.0.2", true},
{"127.0.0.1/32", true},
{"127.0.0.1/24", true},
{"127.0.0.1/8", true},
{"127.0.0.1/7", false},
{"::", false},
{"::1", true},
{"::/128", false},
{"::1/128", true},
{"::1/127", false},
{"::ffff:8000:0001", false},
{"::ffff:8000:0002", false},
{"::ffff:8000:0001/128", false},
{"::ffff:8000:0002/128", false},
{"::ffff:8000:0001/104", false},
{"::ffff:8000:0002/104", false},
{"::ffff:8000:0001/100", false},
{"::ffff:8000:0002/100", false},
{"2001:db8::1", false},
{"2001:db8::1:0:0:1", false},
{"2001:db8::1/32", false},
{"2001:db8::1:0:0:1/96", false},
}
for _, tt := range tests {
tt := tt
t.Run(fmt.Sprintf("ip(%v).isLoopback()", tt.val), func(t *testing.T) {
t.Parallel()
val, err := types.ParseIPAddr(tt.val)
testutil.OK(t, err)
isLoopback := val.IsLoopback()
if isLoopback != tt.isLoopback {
t.Fatalf("expected ip(%v).isLoopback() to be %v instead of %v", tt.val, tt.isLoopback, isLoopback)
}
})
}
})
t.Run("isMulticast", func(t *testing.T) {
t.Parallel()
tests := []struct {
val string
isMulticast bool
}{
{"0.0.0.0", false},
{"127.0.0.1", false},
{"223.255.255.255", false},
{"224.0.0.0", true},
{"239.255.255.255", true},
{"240.0.0.0", false},
{"feff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", false},
{"ff00::", true},
{"ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", true},
{"ff00::/8", true},
{"ff00::/7", false},
{"224.0.0.0/4", true},
{"224.0.0.0/3", false},
}
for _, tt := range tests {
tt := tt
t.Run(fmt.Sprintf("ip(%v).isMulticast()", tt.val), func(t *testing.T) {
t.Parallel()
val, err := types.ParseIPAddr(tt.val)
testutil.OK(t, err)
isMulticast := val.IsMulticast()
if isMulticast != tt.isMulticast {
t.Fatalf("expected ip(%v).isMulticast() to be %v instead of %v", tt.val, tt.isMulticast, isMulticast)
}
})
}
})
t.Run("contains", func(t *testing.T) {
t.Parallel()
tests := []struct {
lhs, rhs string
contains bool
}{
{"0.0.0.0/31", "0.0.0.0", true},
{"0.0.0.0", "0.0.0.0/31", false},
{"255.255.0.0/16", "255.255.255.255", true},
{"255.255.0.0/16", "255.255.255.248/28", true},
{"255.255.0.0/16", "255.255.255.0/24", true},
{"255.255.0.0/16", "255.255.248.0/20", true},
{"255.255.0.0/16", "255.255.0.0/16", true},
{"255.255.0.0/16", "255.254.0.0/15", false},
{"255.255.0.0/16", "255.254.255.0/24", false},
{"::ffff:c000:0280", "192.0.2.128", false},
{"2001:db8::/120", "2001:db8::2", true},
{"2001:db8::/64", "2001:db8:0:0:dead:f00d::/96", true},
}
for _, tt := range tests {
tt := tt
t.Run(fmt.Sprintf("ip(%v).contains(ip(%v))", tt.lhs, tt.rhs), func(t *testing.T) {
t.Parallel()
lhs, err := types.ParseIPAddr(tt.lhs)
testutil.OK(t, err)
rhs, err := types.ParseIPAddr(tt.rhs)
testutil.OK(t, err)
contains := lhs.Contains(rhs)
if contains != tt.contains {
t.Fatalf("expected ip(%v).contains(ip(%v)) to be %v instead of %v", tt.lhs, tt.rhs, tt.contains, contains)
}
})
}
})
t.Run("MarshalCedar", func(t *testing.T) {
t.Parallel()
testutil.Equals(
t,
string(testutil.Must(types.ParseIPAddr("10.0.0.42")).MarshalCedar()),
`ip("10.0.0.42")`)
})
t.Run("MarshalJSON", func(t *testing.T) {
t.Parallel()
expected := `{
"__extn": {
"fn": "ip",
"arg": "12.34.56.78"
}
}`
i1 := testutil.Must(types.ParseIPAddr("12.34.56.78"))
testutil.JSONMarshalsTo(t, i1, expected)
var i2 types.IPAddr
err := json.Unmarshal([]byte(expected), &i2)
testutil.OK(t, err)
testutil.Equals(t, i1, i2)
})
t.Run("UnmarshalJSON/error", func(t *testing.T) {
t.Parallel()
var dt2 types.IPAddr
err := json.Unmarshal([]byte("{}"), &dt2)
testutil.Error(t, err)
})
}