fix compiling/running tests on win32

- new files
- different warning settings
- all tests run in a single process (no fork)

contrib/ports/win32/msvc/lwip_unittests.vcxproj

@@ -84,6 +84,7 @@
     <ClCompile Include="..\..\..\..\test\unit\api\test_sockets.c" />
     <ClCompile Include="..\..\..\..\test\unit\arch\sys_arch.c" />
     <ClCompile Include="..\..\..\..\test\unit\core\test_def.c" />
+    <ClCompile Include="..\..\..\..\test\unit\core\test_dns.c" />
     <ClCompile Include="..\..\..\..\test\unit\core\test_mem.c" />
     <ClCompile Include="..\..\..\..\test\unit\core\test_netif.c" />
     <ClCompile Include="..\..\..\..\test\unit\core\test_pbuf.c" />
@@ -104,6 +105,7 @@
     <ClInclude Include="..\..\..\..\test\unit\api\test_sockets.h" />
     <ClInclude Include="..\..\..\..\test\unit\arch\sys_arch.h" />
     <ClInclude Include="..\..\..\..\test\unit\core\test_def.h" />
+    <ClInclude Include="..\..\..\..\test\unit\core\test_dns.h" />
     <ClInclude Include="..\..\..\..\test\unit\core\test_mem.h" />
     <ClInclude Include="..\..\..\..\test\unit\core\test_netif.h" />
     <ClInclude Include="..\..\..\..\test\unit\core\test_pbuf.h" />

contrib/ports/win32/msvc/lwip_unittests.vcxproj.filters

@@ -88,6 +88,9 @@
     <ClCompile Include="..\..\..\..\test\unit\ip6\test_ip6.c">
       <Filter>ipv6</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\..\..\test\unit\core\test_dns.c">
+      <Filter>core</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\..\..\test\unit\core\test_mem.h">
@@ -143,5 +146,8 @@
     <ClInclude Include="..\..\..\..\test\unit\ip6\test_ip6.h">
       <Filter>ipv6</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\..\..\test\unit\core\test_dns.h">
+      <Filter>core</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>

test/unit/core/test_dns.c

@@ -18,10 +18,11 @@ dns_teardown(void)
 
 START_TEST(test_dns_set_get_server)
 {
-  int i;
+  int n;
   LWIP_UNUSED_ARG(_i);
 
-  for (i = 0; i < 256; i++) {
+  for (n = 0; n < 256; n++) {
+    u8_t i = (u8_t)n;
     ip_addr_t server;
     /* Should return a zeroed address for any index */
     fail_unless(dns_getserver(i));

test/unit/core/test_pbuf.c

@@ -99,9 +99,11 @@ END_TEST
 /** Call pbuf_copy on pbufs with chains of different sizes */
 START_TEST(test_pbuf_copy_unmatched_chains)
 {
-  int i, j;
+  uint16_t i, j;
   err_t err;
   struct pbuf *source, *dest, *p;
+  LWIP_UNUSED_ARG(_i);
+
   source = NULL;
   /* Build source pbuf from linked 16 byte parts,
    * with payload bytes containing their offset */
@@ -109,7 +111,7 @@ START_TEST(test_pbuf_copy_unmatched_chains)
     p = pbuf_alloc(PBUF_RAW, 16, PBUF_RAM);
     fail_unless(p != NULL);
     for (j = 0; j < p->len; j++) {
-        ((unsigned char*)p->payload)[j] = (i << 4) | j;
+        ((u8_t*)p->payload)[j] = (u8_t)((i << 4) | j);
     }
     if (source) {
         pbuf_cat(source, p);

test/unit/ip4/test_ip4.c

@@ -146,6 +146,8 @@ START_TEST(test_ip4_frag)
   err_t err;
   LWIP_UNUSED_ARG(_i);
 
+  linkoutput_ctr = 0;
+
   /* Verify that 8000 byte payload is split into six packets */
   fail_unless(data != NULL);
   test_netif_add();
@@ -237,9 +239,10 @@ START_TEST(test_127_0_0_1)
 {
   ip4_addr_t localhost;
   struct pbuf* p;
-
   LWIP_UNUSED_ARG(_i);
 
+  linkoutput_ctr = 0;
+
   test_netif_add();
   netif_set_down(netif_get_loopif());
 
@@ -279,6 +282,9 @@ START_TEST(test_ip4_icmp_replylen_short)
     0xaa };
   struct pbuf *p;
   const int icmp_len = IP_HLEN + sizeof(struct icmp_hdr);
+  LWIP_UNUSED_ARG(_i);
+
+  linkoutput_ctr = 0;
 
   test_netif_add();
   test_netif.output = arpless_output;
@@ -304,6 +310,9 @@ START_TEST(test_ip4_icmp_replylen_first_8)
   struct pbuf *p;
   const int icmp_len = IP_HLEN + sizeof(struct icmp_hdr);
   const int unreach_len = IP_HLEN + 8;
+  LWIP_UNUSED_ARG(_i);
+
+  linkoutput_ctr = 0;
 
   test_netif_add();
   test_netif.output = arpless_output;

test/unit/ip6/test_ip6.c

@@ -135,6 +135,8 @@ START_TEST(test_ip6_ll_addr)
 {
   LWIP_UNUSED_ARG(_i);
 
+  linkoutput_ctr = 0;
+
   /* test without link-local address */
   test_ip6_ll_addr_iter(0, 0);
 
@@ -319,6 +321,8 @@ START_TEST(test_ip6_dest_unreachable_chained_pbuf)
   u8_t *icmpptr;
   struct ip6_hdr *outhdr;
   struct icmp6_hdr *icmp6hdr;
+  LWIP_UNUSED_ARG(_i);
+
   fail_unless(header);
   header->payload = udp_hdr;
   fail_unless(data);
@@ -363,6 +367,7 @@ START_TEST(test_ip6_frag_pbuf_len_assert)
   struct pbuf *payload, *hdr;
   err_t err;
   int i;
+  LWIP_UNUSED_ARG(_i);
 
   /* Configure and enable local address */
   test_netif6.mtu = 1500;
@@ -403,6 +408,7 @@ START_TEST(test_ip6_frag)
   ip_addr_t peer_addr = IPADDR6_INIT_HOST(0x20010db8, 0x0, 0x0, 0x4);
   struct pbuf *data;
   err_t err;
+  LWIP_UNUSED_ARG(_i);
 
   /* Configure and enable local address */
   test_netif6.mtu = 1500;