wip

Author: mmetc

pkg/csnet/ip_test.go

@@ -138,6 +138,58 @@ func TestAdd2Int(t *testing.T) {
 				IntIP{4, -math.MaxInt64 + 0x010203FF, 0},
 			},
 		},
+		{
+			input: "::ffff:1.2.3.4",
+			want: Range{
+				IntIP{16, -math.MaxInt64 + 0x000000000000ffff, -math.MaxInt64 + 0x01020304},
+				IntIP{16, -math.MaxInt64 + 0x000000000000ffff, -math.MaxInt64 + 0x01020304},
+			},
+		},
+		{
+			input: "::ffff:1.2.3.0/120",
+			want: Range{
+				IntIP{16, -math.MaxInt64 + 0x000000000000ffff, -math.MaxInt64 + 0x01020300},
+				IntIP{16, -math.MaxInt64 + 0x000000000000ffff, -math.MaxInt64 + 0x010203FF},
+			},
+		},
+		{
+			input: "1.2.3.4/32",
+			want: Range{
+				IntIP{4, -math.MaxInt64 + 0x01020304, 0},
+				IntIP{4, -math.MaxInt64 + 0x01020304, 0},
+			},
+		},
+		{
+			input: "2001:db8::/128",
+			want: Range{
+				IntIP{16, -math.MaxInt64 + 0x20010DB800000000, -math.MaxInt64},
+				IntIP{16, -math.MaxInt64 + 0x20010DB800000000, -math.MaxInt64},
+			},
+		},
+
+		{
+			input: "255.255.255.255",
+			want: Range{
+				IntIP{4, -math.MaxInt64 + 0xFFFFFFFF, 0},
+				IntIP{4, -math.MaxInt64 + 0xFFFFFFFF, 0},
+			},
+		},
+		{
+			input: "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff/128",
+			want: Range{
+				IntIP{16, math.MaxInt64, math.MaxInt64},
+				IntIP{16, math.MaxInt64, math.MaxInt64},
+			},
+		},
+
+		{
+			input: "2001:db8:0::/64",
+			want: Range{
+				IntIP{16, -math.MaxInt64 + 0x20010DB800000000, -math.MaxInt64},
+				IntIP{16, -math.MaxInt64 + 0x20010DB800000000, math.MaxInt64},
+			},
+		},
+
 		{
 			input:   "xxx/24",
 			wantErr: `netip.ParsePrefix("xxx/24"): ParseAddr("xxx"): unable to parse IP`,
@@ -146,6 +198,10 @@ func TestAdd2Int(t *testing.T) {
 			input:   "xxx2",
 			wantErr: `ParseAddr("xxx2"): unable to parse IP`,
 		},
+		{
+			input:   "::ffff:1.2.3.0/95", // mask < 96
+			wantErr: "prefix with 4in6 address must have mask >= 96",
+		},
 	}
 
 	for _, tc := range tests {