Try out small fake X server test.

.travis.yml

@@ -5,9 +5,10 @@ compiler:
 
 before_install:
     -   sudo apt-get update -qq
-    -   sudo apt-get install -y libxinerama-dev autoconf automake make libxft-dev libx11-dev libpango1.0-dev
+    -   sudo apt-get install -y libxinerama-dev autoconf automake make libxft-dev libx11-dev libpango1.0-dev xvfb xdotool
     -   sudo pip install cpp-coveralls
 
-script: autoreconf -i && ./configure --enable-gcov && make &&  make -C test/ test
+script:
+    - autoreconf -i && ./configure --enable-gcov && make &&  make -C test/ test && ./test/run_errormsg_test.sh
 after_success:
   - coveralls --exclude lib --gcov-options '\-lp'

test/history-test.c

@@ -16,7 +16,7 @@ static int test = 0;
 
 const char *file = "text";
 
-int main ( int argc, char **argv )
+void history_test()
 {
     unlink(file);
 
@@ -96,5 +96,11 @@ int main ( int argc, char **argv )
     printf("Test %i passed\n", ++test);
 
 
+}
+
+int main ( int argc, char **argv )
+{
+    history_test();
+
     return 0;
 }