Run model unit tests in virtual X fb.

.travis.yml

@@ -8,7 +8,7 @@ before_install:
     - sudo apt-get update -qq
     
 install: 
-    - sudo apt-get -y install qt59base qt59svg qt59tools zlib1g-dev
+    - sudo apt-get -y install qt59base qt59svg qt59tools zlib1g-dev xvfb
     - source /opt/qt5*/bin/qt5*-env.sh
 
 script:
@@ -16,7 +16,7 @@ script:
   - cd build
   - cmake .. -DCMAKE_INSTALL_PREFIX=/usr
   - make -j4
-  - make test
+  - xvfb-run make test
   - sudo make DESTDIR=appdir install ; sudo chown -R $USER appdir ; find appdir/
 
 after_success:

model/CMakeLists.txt

@@ -92,7 +92,7 @@ target_include_directories (Model
 target_link_libraries (Model
   Barcode
   Merge
-  Qt5::Widgets
+  Qt5::Core
   Qt5::PrintSupport
   Qt5::Xml
   Qt5::Svg

model/unit_tests/CMakeLists.txt

@@ -4,7 +4,7 @@ if (Qt5Test_FOUND)
   # Test SubstitutionField class
   #=======================================
   qt5_wrap_cpp (TestSubstitutionField_moc_sources TestSubstitutionField.h)
-  add_executable (TestSubstitutionField TestSubstitutionField.cpp ../SubstitutionField.cpp ${TestSubstitutionField_moc_sources})
+  add_executable (TestSubstitutionField TestSubstitutionField.cpp ${TestSubstitutionField_moc_sources})
   target_link_libraries (TestSubstitutionField Model Qt5::Test)
   add_test (NAME SubstitutionField COMMAND TestSubstitutionField)