test: use python2 instead of python if available

[notmuch] / test / test-lib.sh

diff --git a/test/test-lib.sh b/test/test-lib.sh
index a48faf5cf5298dc724cffa510bcc3eb3dec26c4e..6be93fe35d876ff72761bd095166a90c50fa9e48 100644 (file)
--- a/test/test-lib.sh
+++ b/test/test-lib.sh
@@ -919,6 +919,20 @@ test_emacs () {
        emacsclient --socket-name="$EMACS_SERVER" --eval "(progn $@)"
 }
 
+test_python() {
+       export LD_LIBRARY_PATH=$TEST_DIRECTORY/../lib
+       export PYTHONPATH=$TEST_DIRECTORY/../bindings/python
+
+       # Some distros (e.g. Arch Linux) ship Python 2.* as /usr/bin/python2,
+       # most others as /usr/bin/python. So first try python2, and fallback to
+       # python if python2 doesn't exist.
+       cmd=python2
+       [[ "$test_missing_external_prereq_python2_" = t ]] && cmd=python
+
+       (echo "import sys; _orig_stdout=sys.stdout; sys.stdout=open('OUTPUT', 'w')"; cat) \
+               | $cmd -
+}
+
 # Creates a script that counts how much time it is executed and calls
 # notmuch.  $notmuch_counter_command is set to the path to the
 # generated script.  Use notmuch_counter_value() function to get the
@@ -1180,3 +1194,5 @@ test_declare_external_prereq emacs
 test_declare_external_prereq emacsclient
 test_declare_external_prereq gdb
 test_declare_external_prereq gpg
+test_declare_external_prereq python
+test_declare_external_prereq python2