Zebediah Figura : ws2_32/tests: Add a couple of tests for passing empty buffers to recv().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 258cd1cdbcdf44c1ba16a206c84657c121f1ed79
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=258cd1cdbcdf44c1ba16a206c...

Author: Zebediah Figura 
Date:   Mon May 10 10:19:46 2021 -0500

ws2_32/tests: Add a couple of tests for passing empty buffers to recv().

Signed-off-by: Zebediah Figura 
Signed-off-by: Alexandre Julliard

---

dlls/ws2_32/tests/sock.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)

diff --git a/dlls/ws2_32/tests/sock.c b/dlls/ws2_32/tests/sock.c
index f16a17aa7b3..d132bc833f2 100644
--- a/dlls/ws2_32/tests/sock.c
+++ b/dlls/ws2_32/tests/sock.c
@@ -9044,6 +9044,61 @@ static void test_nonblocking_async_recv(void)
     CloseHandle(overlapped.hEvent);
 }

+static void test_empty_recv(void)
+{
+    OVERLAPPED overlapped = {0};
+    SOCKET client, server;
+    DWORD size, flags = 0;
+    char buffer[5];
+    WSABUF wsabuf;
+    int ret;
+
+    overlapped.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
+    tcp_socketpair(&client, &server);
+
+    WSASetLastError(0xdeadbeef);
+    ret = WSARecv(client, NULL, 0, NULL, &flags, &overlapped, NULL);
+    ok(ret == -1, "expected failure\n");
+    todo_wine ok(WSAGetLastError() == WSAEINVAL, "got error %u\n", WSAGetLastError());
+
+    wsabuf.buf = buffer;
+    wsabuf.len = 0;
+    WSASetLastError(0xdeadbeef);
+    ret = WSARecv(client, &wsabuf, 0, NULL, &flags, &overlapped, NULL);
+    ok(ret == -1, "expected failure\n");
+    todo_wine ok(WSAGetLastError() == WSAEINVAL, "got error %u\n", WSAGetLastError());
+
+    WSASetLastError(0xdeadbeef);
+    ret = WSARecv(client, &wsabuf, 1, NULL, &flags, &overlapped, NULL);
+    ok(ret == -1, "expected failure\n");
+    ok(WSAGetLastError() == ERROR_IO_PENDING, "got error %u\n", WSAGetLastError());
+
+    ret = send(server, "data", 5, 0);
+    ok(ret == 5, "got %d\n", ret);
+
+    ret = WaitForSingleObject(overlapped.hEvent, 1000);
+    ok(!ret, "wait failed\n");
+    ret = GetOverlappedResult((HANDLE)client, &overlapped, &size, FALSE);
+    ok(ret, "got error %u\n", GetLastError());
+    ok(!size, "got size %u\n", size);
+
+    WSASetLastError(0xdeadbeef);
+    ret = WSARecv(client, &wsabuf, 1, &size, &flags, &overlapped, NULL);
+    ok(!ret, "got error %u\n", WSAGetLastError());
+    ok(!size, "got size %u\n", size);
+
+    ret = recv(client, NULL, 0, 0);
+    ok(!ret, "got %d\n", ret);
+
+    ret = recv(client, buffer, sizeof(buffer), 0);
+    ok(ret == 5, "got %d\n", ret);
+    ok(!strcmp(buffer, "data"), "got %s\n", debugstr_an(buffer, ret));
+
+    closesocket(client);
+    closesocket(server);
+    CloseHandle(overlapped.hEvent);
+}
+
 START_TEST( sock )
 {
     int i;
@@ -9101,6 +9156,7 @@ START_TEST( sock )
     test_connecting_socket();
     test_WSAGetOverlappedResult();
     test_nonblocking_async_recv();
+    test_empty_recv();

/* this is an io heavy test, do it at the end so the kernel doesn't start dropping packets */
     test_send();