use absolute path for binary checksum verification (#20487)

internal/config/dns/etcd_dns_test.go

@@ -0,0 +1,59 @@
+// Copyright (c) 2015-2024 MinIO, Inc.
+//
+// This file is part of MinIO Object Storage stack
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package dns
+
+import "testing"
+
+func TestDNSJoin(t *testing.T) {
+	tests := []struct {
+		in  []string
+		out string
+	}{
+		{[]string{"bla", "bliep", "example", "org"}, "bla.bliep.example.org."},
+		{[]string{"example", "."}, "example."},
+		{[]string{"example", "org."}, "example.org."}, // technically we should not be called like this.
+		{[]string{"."}, "."},
+	}
+
+	for i, tc := range tests {
+		if x := dnsJoin(tc.in...); x != tc.out {
+			t.Errorf("Test %d, expected %s, got %s", i, tc.out, x)
+		}
+	}
+}
+
+func TestPath(t *testing.T) {
+	for _, path := range []string{"mydns", "skydns"} {
+		result := msgPath("service.staging.skydns.local.", path)
+		if result != etcdPathSeparator+path+"/local/skydns/staging/service" {
+			t.Errorf("Failure to get domain's path with prefix: %s", result)
+		}
+	}
+}
+
+func TestUnPath(t *testing.T) {
+	result1 := msgUnPath("/skydns/local/cluster/staging/service/")
+	if result1 != "service.staging.cluster.local." {
+		t.Errorf("Failure to get domain from etcd key (with a trailing '/'), expect: 'service.staging.cluster.local.', actually get: '%s'", result1)
+	}
+
+	result2 := msgUnPath("/skydns/local/cluster/staging/service")
+	if result2 != "service.staging.cluster.local." {
+		t.Errorf("Failure to get domain from etcd key (without trailing '/'), expect: 'service.staging.cluster.local.' actually get: '%s'", result2)
+	}
+}