dnsapi/tests: Add some DnsQuery tests.

dlls/dnsapi/tests/Makefile.in

 TESTDLL   = dnsapi.dll
-IMPORTS   = dnsapi
+IMPORTS   = dnsapi ws2_32
 
 C_SRCS = \
 	cache.c \
 	name.c \
+	query.c \
 	record.c

dlls/dnsapi/tests/query.c

+/*
+ * Copyright 2020 Dmitry Timoshkov
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#include <stdarg.h>
+#include <stdio.h>
+
+#include "windef.h"
+#include "winbase.h"
+#include "winnls.h"
+#include "windns.h"
+#include "winsock2.h"
+#include "ws2ipdef.h"
+
+#include "wine/test.h"
+
+#define NS_MAXDNAME 1025
+
+static void test_DnsQuery(void)
+{
+    WCHAR domain[MAX_PATH];
+    WCHAR name[NS_MAXDNAME];
+    DWORD ret, size;
+    DNS_RECORDW *rec;
+    DNS_STATUS status;
+
+    wcscpy(domain, L"_ldap._tcp.deadbeef");
+    status = DnsQuery_W(L"", DNS_TYPE_SRV, DNS_QUERY_STANDARD, NULL, &rec, NULL);
+    ok(status == DNS_ERROR_RCODE_NAME_ERROR || status == DNS_INFO_NO_RECORDS || status == ERROR_INVALID_NAME /* XP */, "got %u\n", status);
+
+    wcscpy(domain, L"_ldap._tcp.dc._msdcs.");
+    size = ARRAY_SIZE(domain) - wcslen(domain);
+    ret = GetComputerNameExW(ComputerNameDnsDomain, domain + wcslen(domain), &size);
+    ok(ret, "GetComputerNameEx error %u\n", GetLastError());
+    if (!size)
+    {
+        skip("computer is not in a domain\n");
+        return;
+    }
+
+    status = DnsQuery_W(domain, DNS_TYPE_SRV, DNS_QUERY_STANDARD, NULL, &rec, NULL);
+    trace("DnsQuery_W(%s) => %d\n", wine_dbgstr_w(domain), status);
+    if (status != ERROR_SUCCESS)
+    {
+        skip("domain %s doesn't have an SRV entry\n", wine_dbgstr_w(domain));
+        return;
+    }
+
+    trace("target %s, port %d\n", wine_dbgstr_w(rec->Data.Srv.pNameTarget), rec->Data.Srv.wPort);
+
+    wcsncpy(name, rec->Data.Srv.pNameTarget, ARRAY_SIZE(name));
+    DnsRecordListFree(rec, DnsFreeRecordList);
+
+    /* IPv4 */
+    status = DnsQuery_W(name, DNS_TYPE_A, DNS_QUERY_STANDARD, NULL, &rec, NULL);
+    ok(status == ERROR_SUCCESS || status == DNS_ERROR_RCODE_NAME_ERROR, "DnsQuery_W(%s) => %d\n", wine_dbgstr_w(name), status);
+    if (status == ERROR_SUCCESS)
+    {
+        SOCKADDR_IN addr;
+        WCHAR buf[IP4_ADDRESS_STRING_LENGTH];
+
+        addr.sin_family = AF_INET;
+        addr.sin_port = 0;
+        addr.sin_addr.s_addr = rec->Data.A.IpAddress;
+        size = sizeof(buf);
+        ret = WSAAddressToStringW((SOCKADDR *)&addr, sizeof(addr), NULL, buf, &size);
+        ok(!ret, "WSAAddressToStringW error %d\n", ret);
+        trace("WSAAddressToStringW => %s\n", wine_dbgstr_w(buf));
+
+        DnsRecordListFree(rec, DnsFreeRecordList);
+    }
+
+    /* IPv6 */
+    status = DnsQuery_W(name, DNS_TYPE_AAAA, DNS_QUERY_STANDARD, NULL, &rec, NULL);
+    ok(status == ERROR_SUCCESS || status == DNS_ERROR_RCODE_NAME_ERROR, "DnsQuery_W(%s) => %d\n", wine_dbgstr_w(name), status);
+    if (status == ERROR_SUCCESS)
+    {
+        SOCKADDR_IN6 addr;
+        WCHAR buf[IP6_ADDRESS_STRING_LENGTH];
+
+        addr.sin6_family = AF_INET6;
+        addr.sin6_port = 0;
+        addr.sin6_scope_id = 0;
+        memcpy(addr.sin6_addr.s6_addr, &rec->Data.AAAA.Ip6Address, sizeof(rec->Data.AAAA.Ip6Address));
+        size = sizeof(buf);
+        ret = WSAAddressToStringW((SOCKADDR *)&addr, sizeof(addr), NULL, buf, &size);
+        ok(!ret, "WSAAddressToStringW error %d\n", ret);
+        trace("WSAAddressToStringW => %s\n", wine_dbgstr_w(buf));
+
+        DnsRecordListFree(rec, DnsFreeRecordList);
+    }
+}
+
+START_TEST(query)
+{
+    WSADATA data;
+
+    WSAStartup(MAKEWORD(2, 2), &data);
+
+    test_DnsQuery();
+}