ENH: run introduced rudimentary tests of SUMA's do.examples via ctest…

… under xvfb (~40sec)

.travis.yml

@@ -8,11 +8,16 @@ env:
 before_install:
     # install build-dependencies as the doc says
     - sudo sh src/other_builds/OS_notes.linux_ubuntu_12_64
+    # install packages needed for testing
+    - sudo apt-get install xvfb xauth libgl1-mesa-dri mesa-utils tcsh libjpeg-progs
 install:
     - cd src
     - cp other_builds/Makefile.$FLAVOR Makefile
     - make vastness
 script:
-    - echo "that is where we would test, so let's do it for now by running a sample executable"
-    - export PATH=$PATH:$PWD/$FLAVOR
+    - export PATH=$PATH:$PWD/$FLAVOR  # to gain access to built binaries
+    - mkdir ../testing; cd ../testing # from here will run tests
+    - cmake -DAFNI_BUILD_TESTS:BOOL=ON ..
+    - ctest
+    # Smoke tests for some additional commands
     - 3dinfo