Adding upstream version 2.5.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

search/searcher/search_ip_range_test.go

@@ -0,0 +1,52 @@
+//  Copyright (c) 2021 Couchbase, Inc.
+//
+// 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 searcher
+
+import (
+	"net"
+	"testing"
+)
+
+func Test_netLimits(t *testing.T) {
+	tests := []struct {
+		arg string
+		lo  string
+		hi  string
+	}{
+		{"128.0.0.0/1", "128.0.0.0", "255.255.255.255"},
+		{"128.0.0.0/7", "128.0.0.0", "129.255.255.255"},
+		{"1.1.1.1/8", "1.0.0.0", "1.255.255.255"},
+		{"1.2.3.0/24", "1.2.3.0", "1.2.3.255"},
+		{"1.2.2.0/23", "1.2.2.0", "1.2.3.255"},
+		{"1.2.3.128/25", "1.2.3.128", "1.2.3.255"},
+		{"1.2.3.0/25", "1.2.3.0", "1.2.3.127"},
+		{"1.2.3.4/31", "1.2.3.4", "1.2.3.5"},
+		{"1.2.3.4/32", "1.2.3.4", "1.2.3.4"},
+		{"2a00:23c8:7283:ff00:1fa8:0:0:0/80", "2a00:23c8:7283:ff00:1fa8::", "2a00:23c8:7283:ff00:1fa8:ffff:ffff:ffff"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.arg, func(t *testing.T) {
+			_, net, err := net.ParseCIDR(tt.arg)
+			if err != nil {
+				t.Fatal(err)
+			}
+			lo, hi := netLimits(net)
+			if lo.String() != tt.lo || hi.String() != tt.hi {
+				t.Errorf("netLimits(%q) = %s %s, want %s %s", tt.arg, lo, hi, tt.lo, tt.hi)
+			}
+
+		})
+	}
+}