Provisions for self-contained plugin tests

Plugin tests are not placed into a "*.klp_ut" shared object
and are executed by the unit test runner.

.gitignore

@@ -36,7 +36,8 @@ mkqtdecl.tmp
 # private data
 private
 src/plugins/*
-!src/plugins/plugins.pro
+!src/plugins/*.pro
+!src/plugins/*.pri
 
 # QTCreator files
 src/klayout.pro.user

src/klayout.pri

@@ -53,3 +53,15 @@ win32 {
 } else {
   QMAKE_CXXFLAGS += -fvisibility=hidden
 }
+
+# define our own shared object extension since QMAKE_EXTENSION_SHLIB is blank on
+# Linux
+win32 {
+  SHLIB_EXT = dll
+  SHLIB_PREFIX =
+} else {
+  SHLIB_EXT = so
+  SHLIB_PREFIX = lib
+}
+export(SHLIB_EXT)
+export(SHLIB_PREFIX)

src/plugins/plugin.pri

@@ -0,0 +1,10 @@
+
+DESTDIR_KLP = $$OUT_PWD/../../..
+
+TEMPLATE = lib
+
+INCLUDEPATH += ../../../db ../../../tl ../../../gsi ../../../laybasic ../../../lay ../../../common
+DEPENDPATH += ../../../db ../../../tl ../../../gsi ../../../laybasic ../../../lay ../../../common
+LIBS += -L$$DESTDIR_KLP -lklayout_db -lklayout_tl -lklayout_gsi -lklayout_laybasic -lklayout_lay
+
+QMAKE_POST_LINK += $(COPY) $$OUT_PWD/$${SHLIB_PREFIX}$${TARGET}.$${SHLIB_EXT} $$DESTDIR_KLP/$${TARGET}.klp

src/plugins/plugin_ut.pri

@@ -0,0 +1,10 @@
+
+DESTDIR_KLP = $$OUT_PWD/../../..
+
+TEMPLATE = lib
+
+INCLUDEPATH += ../src ../../../db ../../../tl ../../../gsi ../../../laybasic ../../../lay ../../../common ../../../ut
+DEPENDPATH += ../src ../../../db ../../../tl ../../../gsi ../../../laybasic ../../../lay ../../../common ../../../ut
+LIBS += -L$$DESTDIR_KLP -lklayout_db -lklayout_tl -lklayout_gsi -lklayout_laybasic -lklayout_lay -lklayout_ut
+
+QMAKE_POST_LINK += $(COPY) $$OUT_PWD/$${SHLIB_PREFIX}$${TARGET}.$${SHLIB_EXT} $$DESTDIR_KLP/$${TARGET}.klp_ut

src/plugins/plugins.pro

@@ -3,5 +3,7 @@ TEMPLATE = subdirs
 # Automatically include all sub-folders, but not the .pro file
 SUBDIR_LIST = $$files($$PWD/*)
 SUBDIR_LIST -= $$PWD/plugins.pro
+SUBDIR_LIST -= $$PWD/plugin.pri
+SUBDIR_LIST -= $$PWD/plugin_ut.pri
 
 SUBDIRS = $$SUBDIR_LIST

src/ut/utMain.cc

@@ -44,10 +44,11 @@
 
 #include <cstdio>
 #include <unistd.h>
+
 #if !defined(_WIN32)
 #  include <sys/ioctl.h>
+#  include <dlfcn.h>
 #endif
-
 #if defined(_WIN32)
 #  include <Windows.h>
 #endif
@@ -799,6 +800,42 @@ main_cont (int argc, char **argv)
   pya::PythonInterpreter::initialize ();
   gsi::initialize_external ();
 
+  //  Search and initialize plugin unit tests
+
+  QStringList name_filters;
+  name_filters << QString::fromUtf8 ("*.klp_ut");
+
+  QDir inst_dir (tl::to_qstring (tl::get_inst_path ()));
+  QStringList inst_modules = inst_dir.entryList (name_filters);
+  inst_modules.sort ();
+
+  for (QStringList::const_iterator im = inst_modules.begin (); im != inst_modules.end (); ++im) {
+
+    QFileInfo klp_file (inst_dir.path (), *im);
+    if (klp_file.exists () && klp_file.isReadable ()) {
+
+      std::string pp = tl::to_string (klp_file.absoluteFilePath ());
+      tl::log << "Loading plugin unit tests " << pp;
+
+      //  NOTE: since we are using a different suffix ("*.klp_ut"), we can't use QLibrary.
+#ifdef _WIN32
+      //  there is no "dlopen" on mingw, so we need to emulate it.
+      HINSTANCE handle = LoadLibraryW ((const wchar_t *) tl::to_qstring (pp).constData ());
+      if (! handle) {
+        throw tl::Exception (tl::to_string (QObject::tr ("Unable to load plugin tests: %s with error message: %s ")), pp, GetLastError ());
+      }
+#else
+      void *handle;
+      handle = dlopen (tl::string_to_system (pp).c_str (), RTLD_LAZY);
+      if (! handle) {
+        throw tl::Exception (tl::to_string (QObject::tr ("Unable to load plugin tests: %s")), pp);
+      }
+#endif
+
+    }
+
+  }
+
   //  No side effects
   tl::set_klayout_path (std::vector<std::string> ());