add dns lookup test

test/CMakeLists.txt

@@ -18,15 +18,25 @@ include_directories(
   ${PROJECT_SOURCE_DIR}/Catch2/single_include
 )
 
-add_executable(ixwebsocket_unittest 
+# Shared sources
+set (SOURCES 
   test_runner.cpp
-  cmd_websocket_chat.cpp
-  IXWebSocketServerTest.cpp
-  IXSocketTest.cpp
+  IXDNSLookupTest.cpp
   IXTest.cpp
   msgpack11.cpp
 )
 
+# Some unittest don't work on windows yet
+if (NOT WIN32)
+  list(APPEND SOURCES 
+    IXWebSocketServerTest.cpp
+    cmd_websocket_chat.cpp
+    IXSocketTest.cpp
+  )
+endif()
+
+add_executable(ixwebsocket_unittest ${SOURCES})
+
 if (APPLE AND USE_TLS)
     target_link_libraries(ixwebsocket_unittest "-framework foundation" "-framework security")
 endif()

test/IXDNSLookupTest.cpp

@@ -0,0 +1,50 @@
+/*
+ *  IXDNSLookupTest.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2018 Machine Zone. All rights reserved.
+ */
+
+#include "catch.hpp"
+
+#include "IXTest.h"
+#include <ixwebsocket/IXDNSLookup.h>
+#include <iostream>
+
+using namespace ix;
+
+
+TEST_CASE("dns", "[net]")
+{
+    SECTION("Test resolving a known hostname")
+    {
+        DNSLookup dnsLookup("www.google.com", 80);
+
+        std::string errMsg;
+        struct addrinfo* res;
+
+        res = dnsLookup.resolve(errMsg, [] { return false; });
+        std::cerr << "Error message: " << errMsg << std::endl;
+        REQUIRE(res != nullptr);
+    }
+
+    SECTION("Test resolving a non-existing hostname")
+    {
+        DNSLookup dnsLookup("wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww", 80);
+
+        std::string errMsg;
+        struct addrinfo* res = dnsLookup.resolve(errMsg, [] { return false; });
+        std::cerr << "Error message: " << errMsg << std::endl;
+        REQUIRE(res == nullptr);
+    }
+
+    SECTION("Test resolving a good hostname, with cancellation")
+    {
+        DNSLookup dnsLookup("www.google.com", 80, 1);
+
+        std::string errMsg;
+        // The callback returning true means we are requesting cancellation
+        struct addrinfo* res = dnsLookup.resolve(errMsg, [] { return true; });
+        std::cerr << "Error message: " << errMsg << std::endl;
+        REQUIRE(res == nullptr);
+    }
+}

test/run.py

@@ -57,7 +57,5 @@ shutil.copy(os.path.join(
     'bin',
     'zlib.dll'), '.')
 
-# unittest broken on Windows
-if osName != 'Windows':
-    testCommand = '{} {}'.format(testBinary, os.getenv('TEST', ''))
-    os.system(testCommand)
+testCommand = '{} {}'.format(testBinary, os.getenv('TEST', ''))
+os.system(testCommand)