Run tests with TRAVIS set

Signed-off-by: Mark Hymers <mark.hymers@ynic.york.ac.uk>

debian/rules

@@ -9,6 +9,8 @@ EXCLUDED_TESTS := not test_iohub
 EXCLUDED_TESTS += and not test_microphone
 EXCLUDED_TESTS += and not test_Exp_LoadCompilePsyexp
 
+export TRAVIS=true
+
 export PYBUILD_NAME=psychopy
 export PYBUILD_TEST_PYTEST=1
 export PYBUILD_TEST_ARGS=>/dev/null 2>&1; cd {build_dir}; xvfb-run $(XVFB_OPTS) python{version} -m pytest -v -k "$(EXCLUDED_TESTS)"
@@ -20,12 +22,6 @@ override_dh_auto_build:
 	dh_auto_build
 	PYTHONPATH=. http_proxy='127.0.0.1:9' sphinx-build -N -bhtml        docs/source build/html
 
-
-override_dh_auto_test:
-	# Don't run test suite during build as xvfb doesn't support
-	# XF86VidModeGetGammaRampSize so we can't even get started
-	# The commands above are left in as reference for maintainers
-
 override_dh_auto_clean:
 	dh_auto_clean