Extend Travis testing

.travis.yml

@@ -1,18 +1,32 @@
 language: c
-dist: xenial
+dist: bionic
 sudo: required
-compiler:
-  - gcc
-  - clang
-addons:
-  postgresql: "10"
-  apt:
-    packages:
-      - postgresql-server-dev-10
-env:
-  matrix:
-    - LIBVERSION=master
+matrix:
+  include:
+    # base
+    - env: POSTGRESQL=12 LIBVERSION=master
+    # libversion versions
+    - env: POSTGRESQL=12 LIBVERSION=3.0.1
+    - env: POSTGRESQL=12 LIBVERSION=3.0.0
+    # compilers
+    - env: POSTGRESQL=12 LIBVERSION=master
+      compiler: gcc
+    - env: POSTGRESQL=12 LIBVERSION=master
+      compiler: clang
+    # PostgreSQL versions
+    - env: POSTGRESQL=11 LIBVERSION=master
+    - env: POSTGRESQL=10 LIBVERSION=master
 before_install:
+  - sudo service postgresql stop
+  - wget -q https://www.postgresql.org/media/keys/ACCC4CF8.asc -O - | sudo apt-key add -
+  - sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ `lsb_release -cs`-pgdg main" >> /etc/apt/sources.list.d/pgdg.list'
+  - sudo apt-get update
+  - sudo apt-get install postgresql-$POSTGRESQL postgresql-server-dev-$POSTGRESQL
+  - sudo sed -i -e 's|#*port = .*|port = 5432|' /etc/postgresql/$POSTGRESQL/main/postgresql.conf
+  - sudo sed -i -e 's|peer|trust|' /etc/postgresql/$POSTGRESQL/main/pg_hba.conf
+  - sudo pg_ctlcluster $POSTGRESQL main restart
+  - sudo -u postgres createuser -s "$USER"
+
   - wget -qO- https://github.com/repology/libversion/archive/$LIBVERSION.tar.gz | tar -xzf- && ( cd libversion-$LIBVERSION && cmake . && make && sudo make install && sudo ldconfig )
 script:
   - make