move template files out of UnitTests.cmake

Tests/UnitTests/Fit/main.cpp

-#ifdef _MSC_VER
-#define _VARIADIC_MAX 10
-#endif
-#include "gtest/gtest.h"
-
-#include "FitParameterTest.h"
-#include "FitParameterLinkedTest.h"
-#include "MinimizerOptionsTest.h"
-#include "FitObjectTest.h"
-
-
-struct ErrorStreamRedirect {
-    ErrorStreamRedirect( std::streambuf * new_buffer )
-        : old( std::cerr.rdbuf( new_buffer ) )
-    { }
-
-    ~ErrorStreamRedirect( ) {
-        std::cerr.rdbuf( old );
-    }
-
-private:
-    std::streambuf * old;
-};
-
-int main(int argc, char** argv)
-{
-    ::testing::InitGoogleTest(&argc, argv);
-
-    // redirect std::cerr stream
-    std::stringstream oss;
-    ErrorStreamRedirect redirecter( oss.rdbuf() );
-    (void)redirecter;
-
-    // run all google tests
-    return RUN_ALL_TESTS();
-}
-

cmake/modules/UnitTests.cmake

@@ -23,45 +23,14 @@ function(UNIT_TESTS TEST_NAME SUBDIR LINK_LIB)
     list(SORT INCLUDE_FILES)
 
     # Compose main program (C++ snippets plus #include's of test code from SUBDIR)
-    set(TMP "/* Generated by CMake. Do not edit. */
-#ifdef _MSC_VER
-#define _VARIADIC_MAX 10
-#endif
-#include <gtest/gtest.h>
-")
+    file(READ "${CMAKE_MODULE_PATH}/unitTests.cpp.header" TMP)
     foreach(FILE ${INCLUDE_FILES})
         set(TMP "${TMP}#include \"${FILE}\"\n")
     endforeach()
-    set(TMP "${TMP}
-struct ErrorStreamRedirect {
-    ErrorStreamRedirect( std::streambuf * new_buffer )
-        : old( std::cerr.rdbuf( new_buffer ) )
-    { }
-
-    ~ErrorStreamRedirect( ) {
-        std::cerr.rdbuf( old )\;
-    }
-
-private:
-    std::streambuf * old\;
-}\;
-
-int main(int argc, char** argv)
-{
-    std::cout << \"UnitTest::main ...\\n\"\;
-    ::testing::InitGoogleTest(&argc, argv)\;
-
-    // redirect std::cerr stream
-    std::stringstream oss\;
-    ErrorStreamRedirect redirecter( oss.rdbuf() )\;
-    (void)redirecter\;
-
-    // run all google tests
-    return RUN_ALL_TESTS()\;
-}
-")
+    file(READ "${CMAKE_MODULE_PATH}/unitTests.cpp.footer" TMPTMP)
+    set(TMP "${TMP}\n${TMPTMP}")
     set(TEST_SRC "_${TEST_NAME}.cpp")
-    file(WRITE ${TEST_SRC} ${TMP})
+    file(WRITE ${TEST_SRC} "${TMP}")
 
     set(EXE ${TEST_NAME})
     add_executable(${EXE} ${TEST_SRC})

Tests/UnitTests/Core/main.cpp → cmake/modules/unitTests.cpp.footer

-#ifdef _MSC_VER
-#define _VARIADIC_MAX 10
-#endif
-#include "gtest/gtest.h"
-
-#include "1/_IncludableTests.h" // generated by CMake
-
 struct ErrorStreamRedirect {
     ErrorStreamRedirect( std::streambuf * new_buffer )
         : old( std::cerr.rdbuf( new_buffer ) )

cmake/modules/unitTests.cpp.header

+/* Generated by CMake module UnitTests.cmake. Do not edit. */
+#ifdef _MSC_VER
+#define _VARIADIC_MAX 10
+#endif
+#include <gtest/gtest.h>