Add new test for management commands running with --help.

This test caught a few bugs where refactoring had made management
commands fail (and would have caught a few more recent ones).

Ideally we'd replace this with a more advanced test that actually
tests that the management command do something useful, but it's a
start.

tools/test-all

@@ -18,5 +18,7 @@ run ./tools/lint-all
 run ./tools/test-js-with-node
 run ./tools/test-backend
 run ./tools/test-js-with-casper
+# Not running management test since it takes 40s and thus is too slow to be worth it.
+# run ./tools/test-management
 
 printf '\n\e[32mAll OK!\e[0m\n'

tools/test-management

@@ -0,0 +1,18 @@
+#!/bin/bash
+set -e
+
+echo "Testing management commands start!"
+failed=0
+for i in `ls */management/commands/ | grep .py$ | grep -v __init__ | sed 's/[.]py$//'`; do
+    if ! $(./manage.py $i --help >/dev/null); then
+        failed=$(expr $failed + 1)
+        echo "ERROR: \`./manage.py $i --help\` crashes!";
+    fi
+done
+
+if [ $failed -gt 0 ]; then
+   echo
+   echo "$failed management commands don't start!"
+   exit 1
+fi
+echo "All management commands start!"

tools/travis/backend

@@ -5,3 +5,4 @@ source /srv/zulip-venv/bin/activate
 export PATH=$PATH:/srv/zulip-venv/bin
 ./tools/lint-all
 ./tools/test-backend
+./tools/test-management