Enable C++ tests for the Emscripten build

.github/workflows/main.yml

@@ -247,10 +247,19 @@ jobs:
             ..
           emmake make -j ${{ env.ncpus }} install
 
-      - name: Jupyter Lite integration 
+      - name: Test xeus-cpp C++ Emscripten
         shell: bash -l {0}
         run: |
+          set -e
           micromamba create -n xeus-lite-host jupyterlite-core
+          micromamba activate xeus-lite-host
+          cd build/test
+          node test_xeus_cpp.js
+        timeout-minutes: 4
+
+      - name: Jupyter Lite integration
+        shell: bash -l {0}
+        run: |
           micromamba activate xeus-lite-host
           python -m pip install jupyterlite-xeus
           jupyter lite build --XeusAddon.prefix=${{ env.PREFIX }}

CMakeLists.txt

@@ -82,7 +82,6 @@ if(EMSCRIPTEN)
     set(XEUS_CPP_BUILD_EXECUTABLE OFF)
     set(XEUS_CPP_USE_SHARED_XEUS OFF)
     set(XEUS_CPP_USE_SHARED_XEUS_CPP OFF)
-    set(XEUS_CPP_BUILD_TESTS OFF)
     # ENV (https://github.com/emscripten-core/emscripten/commit/6d9681ad04f60b41ef6345ab06c29bbc9eeb84e0)
     set(EMSCRIPTEN_FEATURES "${EMSCRIPTEN_FEATURES} -s \"EXPORTED_RUNTIME_METHODS=[ENV']\"")
 endif()

CONTRIBUTING.md

@@ -106,3 +106,9 @@ Once the Jupyter Lite site has built you can test the website locally by executi
 ```bash
 jupyter lite serve --XeusAddon.prefix=$PREFIX
 ```
+
+To test the lite build you can execute the following to run the C++ tests built against emscripten
+```bash
+cd test
+node test_xeus_cpp.js
+```

README.md

@@ -108,6 +108,12 @@ Once the Jupyter Lite site has built you can test the website locally by executi
 jupyter lite serve --XeusAddon.prefix=$PREFIX
 ```
 
+To test the lite build you can execute the following to run the C++ tests built against emscripten
+```bash
+cd test
+node test_xeus_cpp.js
+```
+
 ## Trying it online
 
 To try out xeus-cpp interactively in your web browser, just click on the binder link:

environment-wasm-host.yml

@@ -9,3 +9,4 @@ dependencies:
   - CppInterOp
   - cpp-argparse
   - pugixml
+  - doctest

test/CMakeLists.txt

@@ -25,7 +25,10 @@ include(CheckCXXCompilerFlag)
 string(TOUPPER "${CMAKE_BUILD_TYPE}" U_CMAKE_BUILD_TYPE)
 
 if(CMAKE_CXX_COMPILER_ID MATCHES Clang OR CMAKE_CXX_COMPILER_ID MATCHES GNU OR CMAKE_CXX_COMPILER_ID MATCHES Intel)
-    add_compile_options(-Wunused-parameter -Wextra -Wreorder -Wconversion -Wsign-conversion)
+
+    if(NOT EMSCRIPTEN)
+        add_compile_options(-Wunused-parameter -Wextra -Wreorder -Wconversion -Wsign-conversion)
+    endif()
 
     CHECK_CXX_COMPILER_FLAG(-march=native HAS_MARCH_NATIVE)
     if (HAS_MARCH_NATIVE)
@@ -39,7 +42,6 @@ if(CMAKE_CXX_COMPILER_ID MATCHES MSVC)
 endif()
 
 find_package(doctest)
-find_package(Threads)
 
 set(XEUS_CPP_TESTS
     main.cpp
@@ -48,22 +50,55 @@ set(XEUS_CPP_TESTS
 
 add_executable(test_xeus_cpp ${XEUS_CPP_TESTS})
 
-if (APPLE)
-    set_target_properties(test_xeus_cpp PROPERTIES
-        MACOSX_RPATH ON
+if(EMSCRIPTEN)
+    target_link_libraries(test_xeus_cpp PRIVATE xeus-cpp-static doctest::doctest)
+
+    target_compile_options(test_xeus_cpp
+        PUBLIC "SHELL: -fexceptions"
+    )
+
+    target_link_options(test_xeus_cpp
+        PUBLIC "SHELL: -fexceptions"
+        PUBLIC "SHELL: -s MAIN_MODULE=1"
+        PUBLIC "SHELL: -s WASM_BIGINT"
+        PUBLIC "SHELL: -s ASSERTIONS=0"
+        PUBLIC "SHELL: -s ALLOW_MEMORY_GROWTH=1"
+        PUBLIC "SHELL: -s EXIT_RUNTIME=1"
+        PUBLIC "SHELL: -s STACK_SIZE=32mb"
+        PUBLIC "SHELL: -s INITIAL_MEMORY=128mb"
+        PUBLIC "SHELL: --preload-file ${SYSROOT_PATH}/include@/include"
+        PUBLIC "SHELL: --preload-file ../${XEUS_CPP_DATA_DIR}@/share/xeus-cpp"
+        PUBLIC "SHELL: --preload-file ../${XEUS_CPP_CONF_DIR}@/etc/xeus-cpp"
+    )
+
+    target_include_directories(test_xeus_cpp PRIVATE ${XEUS_CPP_INCLUDE_DIR})
+
+    add_custom_command(TARGET test_xeus_cpp POST_BUILD
+        COMMAND ${CMAKE_COMMAND} -E copy
+        ${CMAKE_INSTALL_PREFIX}/lib/libclangCppInterOp.so
+        ${CMAKE_CURRENT_BINARY_DIR}/libclangCppInterOp.so
+        COMMENT "Copying libclangCppInterOp.so to the test directory"
     )
 else()
+    find_package(Threads)
+
+    if (APPLE)
+        set_target_properties(test_xeus_cpp PROPERTIES
+            MACOSX_RPATH ON
+        )
+    else()
+        set_target_properties(test_xeus_cpp PROPERTIES
+            BUILD_WITH_INSTALL_RPATH 1
+            SKIP_BUILD_RPATH FALSE
+        )
+    endif()
+
     set_target_properties(test_xeus_cpp PROPERTIES
-        BUILD_WITH_INSTALL_RPATH 1
-        SKIP_BUILD_RPATH FALSE
+        INSTALL_RPATH_USE_LINK_PATH TRUE
     )
-endif()
 
-set_target_properties(test_xeus_cpp PROPERTIES
-    INSTALL_RPATH_USE_LINK_PATH TRUE
-)
-
-target_link_libraries(test_xeus_cpp xeus-cpp doctest::doctest ${CMAKE_THREAD_LIBS_INIT})
-target_include_directories(test_xeus_cpp PRIVATE ${XEUS_CPP_INCLUDE_DIR})
+    target_link_libraries(test_xeus_cpp xeus-cpp doctest::doctest ${CMAKE_THREAD_LIBS_INIT})
+    target_include_directories(test_xeus_cpp PRIVATE ${XEUS_CPP_INCLUDE_DIR})
 
-add_custom_target(xtest COMMAND test_xeus_cpp DEPENDS test_xeus_cpp)
+    add_custom_target(xtest COMMAND test_xeus_cpp DEPENDS test_xeus_cpp)
+endif()

test/test_interpreter.cpp

@@ -169,7 +169,13 @@ TEST_SUITE("execute_request")
 
 TEST_SUITE("inspect_request")
 {
+#if defined(XEUS_CPP_EMSCRIPTEN_WASM_BUILD)
+    TEST_CASE("good_status"
+            * doctest::should_fail(true)
+            * doctest::description("TODO: Currently fails for the Emscripten build"))
+#else
     TEST_CASE("good_status")
+#endif
     {
         std::vector<const char*> Args = {/*"-v", "resource-dir", "....."*/};
         xcpp::interpreter interpreter((int)Args.size(), Args.data());
@@ -613,7 +619,13 @@ TEST_SUITE("xsystem_clone")
 
 TEST_SUITE("xsystem_apply")
 {
+#if defined(XEUS_CPP_EMSCRIPTEN_WASM_BUILD)
+    TEST_CASE("apply_xsystem"
+            * doctest::should_fail(true)
+            * doctest::description("TODO: Currently fails for the Emscripten build"))
+#else
     TEST_CASE("apply_xsystem")
+#endif
     {
         xcpp::xsystem system;
         std::string code = "!echo Hello, World!";
@@ -842,6 +854,7 @@ TEST_SUITE("xinspect"){
     }
 }
 
+#if !defined(XEUS_CPP_EMSCRIPTEN_WASM_BUILD)
 TEST_SUITE("xassist"){
 
     TEST_CASE("model_not_found"){
@@ -980,6 +993,7 @@ TEST_SUITE("xassist"){
     }
 
 }
+#endif
 
 
 TEST_SUITE("file") {