[mutter] cogl/tests: Run tests supports both test names and files as parameter

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 2b8f5e65b64ab422c11b106744b4a0c92426d53f
Author: Marco Trevisan (Treviño) <mail 3v1n0 net>
Date:   Thu Apr 4 19:59:50 2019 -0400

    cogl/tests: Run tests supports both test names and files as parameter
    
    Make run-tests.sh to support as arguments both an unit-tests file or test names
    
    This allows to run a test with this script without having to create fake files.
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/442

 cogl/tests/run-tests.sh | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)
---
diff --git a/cogl/tests/run-tests.sh b/cogl/tests/run-tests.sh
index 7b11a5e4d..eccfc05a6 100755
--- a/cogl/tests/run-tests.sh
+++ b/cogl/tests/run-tests.sh
@@ -14,7 +14,7 @@ shift
 TEST_BINARY=$1
 shift
 
-UNIT_TESTS_FILE=$1
+UNIT_TESTS=$1
 shift
 
 . "$ENVIRONMENT_CONFIG"
@@ -103,12 +103,16 @@ fi
 echo ""
 echo ""
 
-if [ ! -f "$UNIT_TESTS_FILE" ]; then
-  echo Missing unit-tests file
+if [ -z "$UNIT_TESTS" ]; then
+  echo Missing unit-tests file or names
   exit 1
 fi
 
-for test in $(cat "$UNIT_TESTS_FILE")
+if [ -f "$UNIT_TESTS" ]; then
+  UNIT_TESTS="$(cat $UNIT_TESTS)"
+fi
+
+for test in $UNIT_TESTS
 do
   export COGL_DEBUG=