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common/helpers: rename PrefixTo16 to PrefixTo6

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Move it to common/helpers/ipv6.go and use it where needed.
This commit is contained in:
Vincent Bernat
2025-11-04 08:05:06 +01:00
parent ffe696e0e1
commit 217c484061
10 changed files with 73 additions and 122 deletions
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44
common/helpers/subnetmap_test.go
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@@ -549,50 +549,6 @@ func TestSubnetMapString(t *testing.T) {
})
}
func TestPrefixTo16(t *testing.T) {
cases := []struct {
name string
input string
expected string
}{
{
name: "IPv4 prefix",
input: "192.0.2.0/24",
expected: "::ffff:192.0.2.0/120",
},
{
name: "IPv4 host",
input: "192.0.2.1/32",
expected: "::ffff:192.0.2.1/128",
},
{
name: "IPv6 prefix unchanged",
input: "2001:db8::/64",
expected: "2001:db8::/64",
},
{
name: "IPv6 host unchanged",
input: "2001:db8::1/128",
expected: "2001:db8::1/128",
},
{
name: "IPv4-mapped IPv6 unchanged",
input: "::ffff:192.0.2.0/120",
expected: "::ffff:192.0.2.0/120",
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
prefix := netip.MustParsePrefix(tc.input)
result := helpers.PrefixTo16(prefix)
if result.String() != tc.expected {
t.Fatalf("PrefixTo16(%s) = %s, want %s", tc.input, result, tc.expected)
}
})
}
}
func TestSubnetMapSupernets(t *testing.T) {
t.Run("nil", func(t *testing.T) {
var sm *helpers.SubnetMap[string]