From ddf5e9ba837401aad3b01b1b49edc16f26aa94ed Mon Sep 17 00:00:00 2001
From: Ravenwater <theo@stillwater-sc.com>
Date: Mon, 8 Jul 2024 10:28:25 -0400
Subject: [PATCH] adding a test hierarchy skeleton with ctest automation

---
 CMakeLists.txt              | 54 ++++++++++++++++++++++++++++++++++++-
 test/CMakeLists.txt         |  1 +
 test/example/CMakeLists.txt |  7 +++++
 test/example/example.cpp    | 35 ++++++++++++++++++++++++
 4 files changed, 96 insertions(+), 1 deletion(-)
 create mode 100644 test/CMakeLists.txt
 create mode 100644 test/example/CMakeLists.txt
 create mode 100644 test/example/example.cpp

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 90bff6b..66fce50 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,7 +29,7 @@ set(STARTER_INSTALL_INCLUDE_DIR "${PROJECT_SOURCE_DIR}/include")
 set(STARTER_INSTALL_LIB_DIR "${PROJECT_SOURCE_DIR}/lib")
 set(STARTER_INSTALL_BIN_DIR "${PROJECT_SOURCE_DIR}/bin")
 
-add_definitions(-D UNIVERSAL_ENABLE_TEST=OFF)
+add_definitions(-D STARTER_ENABLE_TEST=ON)
 
 # include file for common includes 
 include_directories(${STARTER_INSTALL_INCLUDE_DIR})
@@ -48,4 +48,56 @@ enable_testing()
 # MTL4 is a C++ header-only library, so we do not need to build anything
 #add_subdirectory(${STARTER_ROOT_DIR}/ext/stillwater-sc/mtl4 build_mtl4) 
 
+option(STARTER_CMAKE_TRACE "Trace cmake build file actions" ON)
+option(STARTER_USE_FOLDERS "Enable solution folders in Visual Studio, disable for Express"   ON)
+if (STARTER_USE_FOLDERS) 
+  set_property(GLOBAL PROPERTY USE_FOLDERS ON)
+endif()
+
+####
+# macro to read all cpp files in a directory
+# and create a test target for that cpp file
+macro (compile_all testing prefix folder)
+    # cycle through the sources
+    # For the according directories, we assume that each cpp file is a separate test
+    # so, create a executable target and an associated test target
+    foreach (source ${ARGN})
+        get_filename_component (test ${source} NAME_WE)
+        string(REPLACE " " ";" new_source ${source})
+        set(test_name ${prefix}_${test})
+        message(STATUS "Add test ${test_name} from source ${new_source}.")
+        add_executable (${test_name} ${new_source})
+
+        #add_custom_target(valid SOURCES ${SOURCES})
+        set_target_properties(${test_name} PROPERTIES FOLDER ${folder})
+        if (${testing} STREQUAL "true")
+            if (STARTER_CMAKE_TRACE)
+                message(STATUS "testing: ${test_name} ${RUNTIME_OUTPUT_DIRECTORY}/${test_name}")
+            endif()
+            add_test(${test_name} ${RUNTIME_OUTPUT_DIRECTORY}/${test_name})
+        endif()
+    endforeach (source)
+endmacro (compile_all)
+
+####
+# macro to create an executable target consisting of all cpp files in a directory
+# and create a test target for that cpp file
+macro (compile_multifile_target testing test_name folder)
+    message(STATUS "Add test ${test_name} from source folder ${folder}.")
+    add_executable (${test_name} ${ARGN})
+
+    #add_custom_target(valid SOURCES ${SOURCES})
+    set_target_properties(${test_name} PROPERTIES FOLDER ${folder})
+    if (${testing} STREQUAL "true")
+        if (STARTER_CMAKE_TRACE)
+            message(STATUS "testing: ${test_name} ${RUNTIME_OUTPUT_DIRECTORY}/${test_name}")
+        endif()
+        add_test(${test_name} ${RUNTIME_OUTPUT_DIRECTORY}/${test_name})
+    endif()
+endmacro (compile_multifile_target)
+
+
+# incorporate the specific targets that are contained in the source trees
 add_subdirectory(src)
+add_subdirectory(test)
+
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
new file mode 100644
index 0000000..a5c4dce
--- /dev/null
+++ b/test/CMakeLists.txt
@@ -0,0 +1 @@
+add_subdirectory(example)
diff --git a/test/example/CMakeLists.txt b/test/example/CMakeLists.txt
new file mode 100644
index 0000000..23a25be
--- /dev/null
+++ b/test/example/CMakeLists.txt
@@ -0,0 +1,7 @@
+file (GLOB SRCS "./*.cpp")
+
+# Universal is a C++ header-only library, so we do not need to build anything
+include_directories(${STARTER_ROOT_DIR}/ext/stillwater-sc/universal/include)
+
+# create a ctest target for every individual cpp file in this directory
+compile_all("true" "testprefix" "Tests/example" "${SRCS}")
diff --git a/test/example/example.cpp b/test/example/example.cpp
new file mode 100644
index 0000000..6fcaefb
--- /dev/null
+++ b/test/example/example.cpp
@@ -0,0 +1,35 @@
+#include <iostream>
+#include <iomanip>
+
+#include <universal/number/edecimal/edecimal.hpp>
+
+int main(int argc, char** argv)
+try {
+	using namespace sw::universal;
+	edecimal d, e, f;
+
+	e = 1.0f;
+	f = 0xFFFF'FFFF'FFFF'FFFFull;
+	d = e + f;
+
+	std::cout << d << std::endl;
+
+	return EXIT_SUCCESS;
+
+}
+catch (const char* msg) {
+	std::cerr << msg << std::endl;
+	return EXIT_FAILURE;
+}
+catch (const sw::universal::universal_arithmetic_exception& err) {
+	std::cerr << "Unprocessed universal arithmetic exception: " << err.what() << std::endl;
+	return EXIT_FAILURE;
+}
+catch (const sw::universal::universal_internal_exception& err) {
+	std::cerr << "Unprocessed universal internal exception: " << err.what() << std::endl;
+	return EXIT_FAILURE;
+}
+catch (...) {
+	std::cerr << "Caught unknown exception" << std::endl;
+	return EXIT_FAILURE;
+}