Problem: no unit tests

Solution: set up initial unit tests

CMakeLists.txt

@@ -948,6 +948,11 @@ set (ZMQ_BUILD_TESTS ON CACHE BOOL "Build the tests for ZeroMQ")
 if (ZMQ_BUILD_TESTS)
   enable_testing () # Enable testing only works in root scope
   ADD_SUBDIRECTORY (tests)
+  if (BUILD_STATIC)
+    add_subdirectory (unittests)
+  else ()
+    message (WARNING "Not building unit tests, since BUILD_STATIC is not enabled")
+  endif ()
 endif ()
 
 #-----------------------------------------------------------------------------

unittests/CMakeLists.txt

+# CMake build script for ZeroMQ unit tests
+cmake_minimum_required(VERSION "2.8.1")
+
+set(unittests
+  unittest_ypipe
+  unittest_poller
+)
+
+#IF (ENABLE_DRAFTS)
+#    list(APPEND tests
+#    )
+#ENDIF (ENABLE_DRAFTS)
+
+# add location of platform.hpp for Windows builds
+if(WIN32)
+    add_definitions(-DZMQ_CUSTOM_PLATFORM_HPP)
+    add_definitions(-D_WINSOCK_DEPRECATED_NO_WARNINGS)
+    # Same name on 64bit systems
+    link_libraries(ws2_32.lib)
+endif()
+
+include_directories("${CMAKE_SOURCE_DIR}/include" "${CMAKE_SOURCE_DIR}/src" "${CMAKE_BINARY_DIR}")
+
+foreach(test ${unittests})
+  # target_sources not supported before CMake 3.1
+  add_executable(${test} ${test}.cpp)
+
+  # per-test directories not generated on OS X / Darwin
+  if (NOT ${CMAKE_CXX_COMPILER_ID} MATCHES "Clang.*")
+      link_directories(${test} PRIVATE "${CMAKE_SOURCE_DIR}/../lib")     
+  endif()
+  
+  target_link_libraries(${test} libzmq-static ${OPTIONAL_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT} unity)
+  
+  if(RT_LIBRARY)
+    target_link_libraries(${test} ${RT_LIBRARY})
+  endif()
+  
+  if(WIN32)
+    add_test(NAME ${test} WORKING_DIRECTORY ${LIBRARY_OUTPUT_PATH} COMMAND ${test})
+  else()
+    add_test(NAME ${test} COMMAND ${test})
+  endif()
+  
+  set_tests_properties(${test} PROPERTIES TIMEOUT 10)
+  
+  # TODO prevent libzmq (non-static) being in the list of link libraries at all
+  get_target_property(LIBS ${test} LINK_LIBRARIES)
+  list(REMOVE_ITEM LIBS libzmq)
+  message("Link libraries of ${test}: ${LIBS}")  
+  set_target_properties(${test} PROPERTIES LINK_LIBRARIES "${LIBS}")
+endforeach()
+
+#Check whether all tests in the current folder are present
+#TODO duplicated with tests/CMakeLists.txt, define as a function?
+file(READ "${CMAKE_CURRENT_LIST_FILE}" CURRENT_LIST_FILE_CONTENT)
+file(GLOB ALL_TEST_SOURCES "test_*.cpp")
+foreach(TEST_SOURCE ${ALL_TEST_SOURCES})
+  get_filename_component(TESTNAME "${TEST_SOURCE}" NAME_WE)
+  string(REGEX MATCH "${TESTNAME}" MATCH_TESTNAME "${CURRENT_LIST_FILE_CONTENT}")
+  if (NOT MATCH_TESTNAME)
+    message(AUTHOR_WARNING "Test '${TESTNAME}' is not known to CTest.")
+  endif()
+endforeach()

unittests/unittest_poller.cpp

+/*
+Copyright (c) 2018 Contributors as noted in the AUTHORS file
+
+This file is part of 0MQ.
+
+0MQ 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 3 of the License, or
+(at your option) any later version.
+
+0MQ 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 program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "../tests/testutil.hpp"
+
+#include <poller.hpp>
+
+#include <unity.h>
+
+void setUp ()
+{
+}
+void tearDown ()
+{
+}
+
+void test_create ()
+{
+    zmq::thread_ctx_t thread_ctx;
+    zmq::poller_t poller (thread_ctx);
+}
+
+int main (void)
+{
+    setup_test_environment ();
+
+    UNITY_BEGIN ();
+    RUN_TEST (test_create);
+
+    return UNITY_END ();
+}

unittests/unittest_ypipe.cpp

+/*
+Copyright (c) 2018 Contributors as noted in the AUTHORS file
+
+This file is part of 0MQ.
+
+0MQ 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 3 of the License, or
+(at your option) any later version.
+
+0MQ 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 program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "../tests/testutil.hpp"
+
+#include <ypipe.hpp>
+
+#include <unity.h>
+
+void setUp ()
+{
+}
+void tearDown ()
+{
+}
+
+void test_create ()
+{
+    zmq::ypipe_t<int, 1> ypipe;
+}
+
+int main (void)
+{
+    setup_test_environment ();
+
+    UNITY_BEGIN ();
+    RUN_TEST (test_create);
+
+    return UNITY_END ();
+}