Make sure swui's pSwResMgr is initialized in CppunitTest_sw_dialogs_test

...to avoid -fsanitize=null at

> sw/source/ui/misc/glossary.cxx:840:17: runtime error: reference binding to null pointer of type 'ResMgr'
>     #0 0x7f980fc6b73f in SwGlTreeListBox::SwGlTreeListBox(vcl::Window*, long) sw/source/ui/misc/glossary.cxx:840:17
>     #1 0x7f980fc80d56 in VclPtr<SwGlTreeListBox> VclPtr<SwGlTreeListBox>::Create<VclPtr<vcl::Window>&, long>(VclPtr<vcl::Window>&, long&&) include/vcl/vclptr.hxx:138:46
>     #2 0x7f980fc6c5d2 in makeSwGlTreeListBox sw/source/ui/misc/glossary.cxx:851:1
>     #3 0x7f985da4c3c4 in VclBuilder::makeObject(vcl::Window*, rtl::OString const&, rtl::OString const&, std::__debug::map<rtl::OString, rtl::OString, std::less<rtl::OString>, std::allocator<std::pair<rtl::OString const, rtl::OString> > >&) vcl/source/window/builder.cxx:1793:17

Change-Id: Ieb0d0f6b561e93acbee8208e1ba445879e99adc1

sw/CppunitTest_sw_dialogs_test.mk

@@ -20,6 +20,7 @@ $(eval $(call gb_CppunitTest_use_sdk_api,sw_dialogs_test))
 $(eval $(call gb_CppunitTest_set_include,sw_dialogs_test,\
     -I$(SRCDIR)/sw/source/ui/inc \
     -I$(SRCDIR)/sw/inc \
+    -I$(SRCDIR)/sw/source/uibase/inc \
     $$(INCLUDE) \
 ))
 

sw/qa/unit/sw-dialogs-test.cxx

@@ -9,17 +9,25 @@
 
 #include <sal/config.h>
 #include <test/screenshot_test.hxx>
+#include <rtl/bootstrap.hxx>
 #include <rtl/strbuf.hxx>
 #include <osl/file.hxx>
 #include <sfx2/app.hxx>
 #include <vcl/abstdlg.hxx>
 
+#include <swabstdlg.hxx>
+
 using namespace ::com::sun::star;
 
+extern "C" { using Fn = SwAbstractDialogFactory * (*)(); }
+    // sw/source/ui/dialog/swuiexp.cxx
+
 /// Test opening a dialog in sw
 class SwDialogsTest : public ScreenshotTest
 {
 private:
+    osl::Module libSwui_;
+
     /// helper method to populate KnownDialogs, called in setUp(). Needs to be
     /// written and has to add entries to KnownDialogs
     virtual void registerKnownDialogsByID(mapType& rKnownDialogs) override;
@@ -32,6 +40,8 @@ public:
     SwDialogsTest();
     virtual ~SwDialogsTest() override;
 
+    void setUp() override;
+
     // try to open a dialog
     void openAnyDialog();
 
@@ -48,6 +58,22 @@ SwDialogsTest::~SwDialogsTest()
 {
 }
 
+void SwDialogsTest::setUp()
+{
+    ScreenshotTest::setUp();
+    // Make sure the swui library's global pSwResMgr is initialized
+    // (alternatively to dynamically loading the library, SwCreateDialogFactory
+    // could be declared in an include file and this CppunitTest link against
+    // the swui library):
+    OUString url("${LO_LIB_DIR}/" SVLIBRARY("swui"));
+    rtl::Bootstrap::expandMacros(url); //TODO: detect failure
+    CPPUNIT_ASSERT(libSwui_.load(url, SAL_LOADMODULE_GLOBAL));
+    auto fn = reinterpret_cast<Fn>(
+        libSwui_.getFunctionSymbol("SwCreateDialogFactory"));
+    CPPUNIT_ASSERT(fn != nullptr);
+    (*fn)();
+}
+
 void SwDialogsTest::registerKnownDialogsByID(mapType& /*rKnownDialogs*/)
 {
     // fill map of known dialogs