tests: Use --screen manual for both code coverage jobs.

.travis.yml

@@ -50,14 +50,14 @@ addons:
 
 jobs:
   include:
-    - env: LUA=5.2 LUANAME=lua5.2 DO_COVERAGE=coveralls
+    - env: LUA=5.2 LUANAME=lua5.2 DO_COVERAGE=coveralls MANUAL_SCREENS=1
       addons:
         apt:
           packages:
             - *BASE_PACKAGES
             - liblua5.2-dev
             - lua5.2
-    - env: LUA=5.3 LUANAME=lua5.3 DO_COVERAGE=codecov
+    - env: LUA=5.3 LUANAME=lua5.3 DO_COVERAGE=codecov MANUAL_SCREENS=1
       addons:
         apt:
           packages:
@@ -229,7 +229,8 @@ install:
       return 0
     }
 script:
-  - export CMAKE_ARGS="-DLUA_LIBRARY=${LUALIBRARY} -DLUA_INCLUDE_DIR=${LUAINCLUDE} -D OVERRIDE_VERSION=$AWESOME_VERSION -DSTRICT_TESTS=true -D DO_COVERAGE=$DO_COVERAGE -D CMAKE_C_FLAGS=-Werror"
+  - if [ "$MANUAL_SCREENS" != "1" ]; then export MANUAL_SCREENS=0; fi
+  - export CMAKE_ARGS="-DLUA_LIBRARY=${LUALIBRARY} -D LUA_INCLUDE_DIR=${LUAINCLUDE} -D OVERRIDE_VERSION=$AWESOME_VERSION -D STRICT_TESTS=true -D DO_COVERAGE=$DO_COVERAGE -D TEST_MANUAL_SCREENS=$MANUAL_SCREENS -D CMAKE_C_FLAGS=-Werror"
   - |
     if [ "$EMPTY_THEME_WHILE_LOADING" = 1 ]; then
       # Break beautiful so that trying to access the theme before beautiful.init() causes an error

CMakeLists.txt

@@ -404,6 +404,12 @@ target_link_libraries(test-gravity
 if(DO_COVERAGE)
     set(TESTS_RUN_ENV DO_COVERAGE=1)
 endif()
+
+# Start AwesomeWM tests with `--screen off`
+if ("${TEST_MANUAL_SCREENS}" MATCHES "1")
+    set(TEST_RUN_ARGS "--W --m")
+endif()
+
 add_custom_target(check-integration
     ${CMAKE_COMMAND} -E env CMAKE_BINARY_DIR='${CMAKE_BINARY_DIR}' ${TESTS_RUN_ENV} ./tests/run.sh \$\${TEST_RUN_ARGS:--W}
     WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}

tests/run.sh

@@ -23,16 +23,19 @@ Usage: $0 [OPTION]... [FILE]...
 Options:
   -v: verbose mode
   -W: warnings become errors
+  -m: Use --screen off
   -h: show this help
 EOF
     exit "$1"
 }
 fail_on_warning=
+manual_screens=
 verbose=${VERBOSE:-0}
-while getopts vWh opt; do
+while getopts vWmh opt; do
     case $opt in
         v) verbose=1 ;;
         W) fail_on_warning=1 ;;
+        m) manual_screens=" --screen off" ;;
         h) usage 0 ;;
         *) usage 64 ;;
     esac
@@ -105,7 +108,9 @@ fi
 
 # Add test dir (for _runner.lua).
 # shellcheck disable=SC2206
-awesome_options=($AWESOME_OPTIONS --search lib --search "$this_dir")
+awesome_options=($AWESOME_OPTIONS $manual_screens --search lib --search "$this_dir")
+
+awesome_options+=(--screen off)
 
 # Cleanup on errors / aborting.
 cleanup() {
@@ -172,6 +177,7 @@ fi
 # Start awesome.
 start_awesome() {
     cd "$build_dir"
+
     # Kill awesome after $TEST_TIMEOUT seconds (e.g. for errors during test setup).
     # SOURCE_DIRECTORY is used by .luacov.
     DISPLAY="$D" SOURCE_DIRECTORY="$source_dir" \