Struggling with LayerTabBar in unit test

[Stephan Bergmann]

On 24/09/2018 14:24, Regina Henschel wrote:
> void SdMiscTest::testTdf119956()
> {
>      sd::DrawDocShellRef xDocShRef = 
> Load(m_directories.getURLFromSrc("/sd/qa/unit/data/tdf119956.odg"), ODG);
>      CPPUNIT_ASSERT_MESSAGE( "Failed to load file.", xDocShRef.is());
> 
>      sd::DrawViewShell* pDrawViewShell = dynamic_cast<sd::DrawViewShell* 
>  >(xDocShRef->GetViewShell());
>      CPPUNIT_ASSERT_MESSAGE( "No dynamic_cast to sd::DrawViewShell", 
> pDrawViewShell);
> 
>      pDrawViewShell->ChangeEditMode(EditMode::MasterPage,true);
>      pDrawViewShell->ResetActualLayer();
> }
> 
> The line pDrawViewShell->ResetActualLayer(); does not work. On make 
> sd.check I get the error:
> 
> [build LNK] CppunitTest/test_sd_misc_tests.dll
>     Creating library 
> D:/Build_localizedLayernames/core/workdir/LinkTarget/CppunitTest/itest_sd_misc_tests.lib 
> and object 
> D:/Build_localizedLayernames/core/workdir/LinkTarget/CppunitTest/itest_sd_misc_tests.exp 
> 
> misc-tests.o : error LNK2019: unresolved external symbol "public: void 
> __cdecl sd::DrawViewShell::ResetActualLayer(void)" 
> (?ResetActualLayer at DrawViewShell@sd@@QEAAXXZ) referenced in function 
> "public: void __cdecl SdMiscTest::testTdf119956(void)" 
> (?testTdf119956 at SdMiscTest@@QEAAXXZ)
> D:/Build_localizedLayernames/core/workdir/LinkTarget/CppunitTest/test_sd_misc_tests.dll 
> : fatal error LNK1120: 1 unresolved externals
> make[1]: *** 
> [D:/Build_localizedLayernames/core/solenv/gbuild/LinkTarget.mk:636: 
> D:/Build_localizedLayernames/core/workdir/LinkTarget/CppunitTest/test_sd_misc_tests.dll] 
> Error 96
> 
> Similar for other methods, that use the LayerTabBar, e.g. 
> GetLayerTabControl() or GetTabLayerCount(). There are no problems in the 
> other lines, when I remove ResetActualLayer().

sd::DrawViewShell::ResetActualLayer is not exported from Library_sd, 
hence the test code can't call it.  One hacky solution is to mark that 
function as SD_DLLPUBLIC in sd/source/ui/inc/DrawViewShell.hxx (probably 
with a comment that it is only exported for the needs of test code).

(pDrawViewShell->ChangeEditMode calls a virtual method via vtable, so 
doesn't care if the called function isn't actually exported.)