Expand testing done via Travis CI to cover production pipeline.

With this change, we are now testing the production static asset
pipeline and installation process in a new testing job (and also run
the frontend/backend tests separately).

This means that changes that break the Zulip static asset pipeline or
production installation process are more likely to fail tests.  The
testing is imperfect in that it does not have proper isolation -- we
build a complete Zulip development environment and then install a
Zulip production environment on top of it, so e.g. any apt
dependencies installed for Zulip development will still be available
for the Zulip production environment.  But, it's better than nothing!

A good v2 of this would be to have the production setup process just
install the minimum stuff needed to run `build-release-tarball` and
then uninstall it / clean it up so that we can do a more clear
production installation, but that's more work.

.travis.yml

@@ -1,14 +1,17 @@
 install:
-  - pip install pbs
-  - python provision.py --travis
+  - tools/travis/setup-$TEST_SUITE
 cache:
   - apt: false
+env:
+  - TEST_SUITE=frontend
+  - TEST_SUITE=backend
+  - TEST_SUITE=production
 language: python
 python:
   - "2.7"
 # command to run tests
 script:
-  - source /srv/zulip-venv/bin/activate && env PATH=$PATH:/srv/zulip-venv/bin ./tools/test-all
+  - ./tools/travis/$TEST_SUITE
 sudo: required
 services:
 - docker

scripts/lib/install

@@ -11,7 +11,7 @@ deb-src http://ppa.launchpad.net/tabbott/zulip/ubuntu trusty main
 EOF
 
 apt-get update
-apt-get -y dist-upgrade
+apt-get -y dist-upgrade $APT_OPTIONS
 apt-get install -y puppet git python
 
 mkdir -p /etc/zulip

tools/travis/backend

@@ -0,0 +1,7 @@
+#!/bin/bash
+set -e
+set -x
+source /srv/zulip-venv/bin/activate
+export PATH=$PATH:/srv/zulip-venv/bin
+./tools/lint-all
+./tools/test-backend

tools/travis/frontend

@@ -0,0 +1,7 @@
+#!/bin/bash
+set -e
+set -x
+source /srv/zulip-venv/bin/activate
+export PATH=$PATH:/srv/zulip-venv/bin
+./tools/test-js-with-node
+./tools/test-js-with-casper

tools/travis/production

@@ -0,0 +1,5 @@
+#!/bin/bash
+set -e
+set -x
+
+sudo ./tools/travis/production-helper

tools/travis/production-helper

@@ -0,0 +1,25 @@
+#!/bin/bash
+set -e
+set -x
+
+apt-get install openssl ssl-cert
+ln -s /etc/ssl/certs/ssl-cert-snakeoil.pem /etc/ssl/certs/zulip.combined-chain.crt
+ln -s /etc/ssl/private/ssl-cert-snakeoil.key /etc/ssl/private/zulip.key
+
+tar -xf zulip-server-travis.tar.gz
+mv zulip-server-travis /root/zulip
+
+export APT_OPTIONS="-o Dpkg::Options::=--force-confdef -o Dpkg::Options::=--force-confold"
+/root/zulip/scripts/setup/install
+
+cat >>/etc/zulip/settings.py <<EOF
+# Travis CI override settings above
+EXTERNAL_HOST = 'zulip.travis.example.com'
+ZULIP_ADMINISTRATOR = 'zulip-travis-admin@travis.example.com'
+ADMIN_DOMAIN = 'travis.example.com'
+AUTHENTICATION_BACKENDS = ( 'zproject.backends.EmailAuthBackend', )
+NOREPLY_EMAIL_ADDRESS = 'noreply@travis.example.com'
+DEFAULT_FROM_EMAIL = "Zulip <zulip@travis.example.com>"
+EOF
+
+su zulip -c /home/zulip/deployments/current/scripts/setup/initialize-database

tools/travis/setup-backend

@@ -0,0 +1,5 @@
+#!/bin/bash
+set -e
+set -x
+pip install pbs
+python provision.py --travis

tools/travis/setup-frontend

@@ -0,0 +1 @@
+setup-backend

tools/travis/setup-production

@@ -0,0 +1,25 @@
+#!/bin/bash
+set -e
+set -x
+
+pip install pbs
+python provision.py --travis
+source /srv/zulip-venv/bin/activate
+./tools/build-release-tarball travis
+mv /tmp/tmp.*/zulip-server-travis.tar.gz ./
+
+# Shut down all services so that restarting postgres and rebuilding
+# the postgres database to match the prod installation setup will work.
+sudo supervisorctl stop all
+# Clear memcached to avoid contamination between development and prod
+# environments.
+sudo /etc/init.d/memcached restart
+
+# Drop any open connections to the development postgres installation.
+sudo "$(dirname "$0")/../../scripts/setup/terminate-psql-sessions" postgres zulip zulip_base
+
+# Remove and recreate the postgres database
+sudo pg_ctlcluster 9.3 main stop
+sudo pg_dropcluster 9.3 main
+sudo rm -rf /etc/postgresql/9.3/main /var/lib/postgresql/9.3/main
+sudo pg_createcluster 9.3 main