Test add_test() generator expressions

This teaches the 'testing' test to try generator expressions in
arguments to add_test(NAME).  This test case mimics a common use-case of
passing executables to test driver scripts.  We excercise the syntax for
per-configuration target file names.

Tests/Testing/CMakeLists.txt

@@ -54,7 +54,34 @@ ADD_TEST(testing.1 ${Testing_BINARY_DIR}/bin/testing)
 ADD_SUBDIRECTORY(Sub/Sub2)
 
 # Per-config target name test.
+ADD_LIBRARY(pcStatic STATIC pcStatic.c)
+SET_PROPERTY(TARGET pcStatic PROPERTY RELEASE_POSTFIX -opt)
+SET_PROPERTY(TARGET pcStatic PROPERTY DEBUG_POSTFIX -dbg)
+ADD_LIBRARY(pcShared SHARED pcShared.c)
+SET_PROPERTY(TARGET pcShared PROPERTY RELEASE_POSTFIX -opt)
+SET_PROPERTY(TARGET pcShared PROPERTY DEBUG_POSTFIX -dbg)
+SET_PROPERTY(TARGET pcShared PROPERTY VERSION 1.2)
+SET_PROPERTY(TARGET pcShared PROPERTY SOVERSION 3)
+IF(NOT WIN32)
+  SET(soname_file -DpcShared_soname_file=$<TARGET_SONAME_FILE:pcShared>)
+ENDIF()
 ADD_EXECUTABLE(perconfig perconfig.c)
+TARGET_LINK_LIBRARIES(perconfig pcStatic pcShared)
 SET_PROPERTY(TARGET perconfig PROPERTY RELEASE_POSTFIX -opt)
 SET_PROPERTY(TARGET perconfig PROPERTY DEBUG_POSTFIX -dbg)
 ADD_TEST(NAME testing.perconfig COMMAND perconfig)
+
+# Test using a driver script with generator expressions.
+ADD_TEST(NAME testing.driver
+  COMMAND ${CMAKE_COMMAND}
+    -Dconfiguration=$<CONFIGURATION>
+    -Dperconfig_file_dir=$<TARGET_FILE_DIR:perconfig>
+    -Dperconfig_file_name=$<TARGET_FILE_NAME:perconfig>
+    -Dperconfig_file=$<TARGET_FILE:perconfig>
+    -DpcStatic_file=$<TARGET_FILE:pcStatic>
+    -DpcStatic_linker_file=$<TARGET_LINKER_FILE:pcStatic>
+    -DpcShared_file=$<TARGET_FILE:pcShared>
+    -DpcShared_linker_file=$<TARGET_LINKER_FILE:pcShared>
+    ${soname_file}
+    -P ${Testing_SOURCE_DIR}/driver.cmake
+  )

Tests/Testing/driver.cmake

@@ -0,0 +1,40 @@
+# Print values for human reference.
+foreach(v
+    configuration
+    perconfig_file_dir
+    perconfig_file_name
+    perconfig_file
+    pcStatic_file
+    pcStatic_linker_file
+    pcShared_file
+    pcShared_linker_file
+    pcShared_soname_file
+    )
+  message("${v}=${${v}}")
+endforeach()
+
+# Verify that file names match as expected.
+set(pc_file_components ${perconfig_file_dir}/${perconfig_file_name})
+if(NOT "${pc_file_components}" STREQUAL "${perconfig_file}")
+  message(SEND_ERROR
+    "File components ${pc_file_components} do not match ${perconfig_file}")
+endif()
+if(NOT "${pcStatic_file}" STREQUAL "${pcStatic_linker_file}")
+  message(SEND_ERROR
+    "pcStatic_file does not match pcStatic_linker_file:\n"
+    "  ${pcStatic_file}\n"
+    "  ${pcStatic_linker_file}\n"
+    )
+endif()
+
+# Verify that the implementation files are named correctly.
+foreach(lib pcStatic pcShared)
+  file(STRINGS "${${lib}_file}" info LIMIT_COUNT 1 REGEX "INFO:[^[]*\\[")
+  if(NOT "${info}" MATCHES ".*INFO:symbol\\[${lib}\\].*")
+    message(SEND_ERROR "No INFO:symbol[${lib}] found in:\n  ${${lib}_file}")
+  endif()
+endforeach()
+execute_process(COMMAND ${perconfig_file} RESULT_VARIABLE result)
+if(result)
+  message(SEND_ERROR "Error running:\n  ${perconfig_file}\n(${result})")
+endif()

Tests/Testing/pcShared.c

@@ -0,0 +1,5 @@
+#include "pcShared.h"
+const char* pcShared(void)
+{
+  return "INFO:symbol[pcShared]";
+}

Tests/Testing/pcShared.h

@@ -0,0 +1,16 @@
+#ifndef pcShared_h
+#define pcShared_h
+
+#ifdef _WIN32
+# ifdef pcShared_EXPORTS
+#  define PC_EXPORT __declspec(dllexport)
+# else
+#  define PC_EXPORT __declspec(dllimport)
+# endif
+#else
+# define PC_EXPORT
+#endif
+
+PC_EXPORT const char* pcShared(void);
+
+#endif

Tests/Testing/pcStatic.c

@@ -0,0 +1,4 @@
+const char* pcStatic(void)
+{
+  return "INFO:symbol[pcStatic]";
+}

Tests/Testing/perconfig.c

@@ -1,4 +1,8 @@
+#include "pcShared.h"
+extern const char* pcStatic(void);
 int main()
 {
+  pcStatic();
+  pcShared();
   return 0;
 }