intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 25 insertions, 0 deletions

diff --git a/library/cpp/dns/ut/dns_ut.cpp b/library/cpp/dns/ut/dns_ut.cpp
new file mode 100644
index 00000000000..aae05a742c4
--- /dev/null
+++ b/library/cpp/dns/ut/dns_ut.cpp
@@ -0,0 +1,25 @@
+#include <library/cpp/testing/unittest/registar.h>
+#include <library/cpp/dns/cache.h>
+#include <util/network/address.h>
+
+Y_UNIT_TEST_SUITE(TestDNS) {
+    using namespace NDns;
+
+    Y_UNIT_TEST(TestMagic) {
+        UNIT_ASSERT_EXCEPTION(CachedThrResolve(TResolveInfo("?", 80)), yexception);
+    }
+
+    Y_UNIT_TEST(TestAsteriskAlias) {
+        AddHostAlias("*", "localhost");
+        const TResolvedHost* rh = CachedThrResolve(TResolveInfo("yandex.ru", 80));
+        UNIT_ASSERT(rh != nullptr);
+
+        const TNetworkAddress& addr = rh->Addr;
+        for (TNetworkAddress::TIterator ai = addr.Begin(); ai != addr.End(); ai++) {
+            if (ai->ai_family == AF_INET || ai->ai_family == AF_INET6) {
+                NAddr::TAddrInfo info(&*ai);
+                UNIT_ASSERT(IsLoopback(info));
+            }
+        }
+    }
+}