init

pkg/mesh/ip_test.go

@@ -0,0 +1,75 @@
+// Copyright 2019 the Kilo authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package mesh
+
+import (
+	"net"
+	"testing"
+)
+
+func TestSortIPs(t *testing.T) {
+	ip1 := oneAddressCIDR(net.ParseIP("10.0.0.1"))
+	ip2 := oneAddressCIDR(net.ParseIP("10.0.0.2"))
+	ip3 := oneAddressCIDR(net.ParseIP("192.168.0.1"))
+	ip4 := oneAddressCIDR(net.ParseIP("2001::7"))
+	ip5 := oneAddressCIDR(net.ParseIP("fd68:da49:09da:b27f::"))
+	for _, tc := range []struct {
+		name string
+		ips  []*net.IPNet
+		out  []*net.IPNet
+	}{
+		{
+			name: "single",
+			ips:  []*net.IPNet{ip1},
+			out:  []*net.IPNet{ip1},
+		},
+		{
+			name: "IPv4s",
+			ips:  []*net.IPNet{ip2, ip3, ip1},
+			out:  []*net.IPNet{ip1, ip2, ip3},
+		},
+		{
+			name: "IPv4 and IPv6",
+			ips:  []*net.IPNet{ip4, ip1},
+			out:  []*net.IPNet{ip1, ip4},
+		},
+		{
+			name: "IPv6s",
+			ips:  []*net.IPNet{ip5, ip4},
+			out:  []*net.IPNet{ip4, ip5},
+		},
+		{
+			name: "all",
+			ips:  []*net.IPNet{ip3, ip4, ip2, ip5, ip1},
+			out:  []*net.IPNet{ip1, ip2, ip3, ip4, ip5},
+		},
+	} {
+		sortIPs(tc.ips)
+		equal := true
+		if len(tc.ips) != len(tc.out) {
+			equal = false
+		} else {
+			for i := range tc.ips {
+				if !ipNetsEqual(tc.ips[i], tc.out[i]) {
+					equal = false
+					break
+				}
+			}
+		}
+		if !equal {
+			t.Errorf("test case %q: expected %s, got %s", tc.name, tc.out, tc.ips)
+		}
+	}
+}