Update to Xenial, expand matrix to cover new CMS releases

.travis.yml

@@ -1,17 +1,27 @@
 language: php
 
+dist: xenial
+
+services:
+  - mysql
+  - postgresql
+
 env:
   global:
     - COMPOSER_ROOT_VERSION=2.0.x-dev
 
 matrix:
   include:
     - php: 5.6
-      env: DB=MYSQL PHPCS_TEST=1 PHPUNIT_TEST=1
+      env: DB=MYSQL PHPUNIT_TEST=1 RECIPE_VERSION="^1 --prefer-lowest"
     - php: 7.0
-      env: DB=MYSQL PHPUNIT_TEST=1
+      env: DB=MYSQL PHPUNIT_TEST=1 RECIPE_VERSION="^1"
     - php: 7.1
-      env: DB=PGSQL PHPUNIT_COVERAGE_TEST=1
+      env: DB=PGSQL PHPUNIT_TEST=1 RECIPE_VERSION="^4 --prefer-lowest"
+    - php: 7.2
+      env: DB=PGSQL PHPUNIT_COVERAGE_TEST=1 RECIPE_VERSION="^4"
+    - php: 7.3
+      env: DB=PGSQL PHPCS_TEST=1 PHPUNIT_TEST=1 RECIPE_VERSION="4.x-dev"
 
 before_script:
   # Init PHP
@@ -20,9 +30,10 @@ before_script:
 
   # Install composer dependencies
   - composer validate
-  - composer require --no-update silverstripe/recipe-core:1.0.x-dev
-  - if [[ $DB == PGSQL ]]; then composer require --no-update silverstripe/postgresql 2.0.x-dev; fi
-  - composer install --prefer-dist --no-interaction --no-progress --no-suggest --optimize-autoloader --verbose --profile
+  - composer require --no-update silverstripe/recipe-core:$RECIPE_VERSION
+  - if [[ $DB == PGSQL ]]; then composer require --no-update silverstripe/postgresql:^2; fi
+  - if [[ $PHPCS_TEST ]]; then composer install --prefer-source --no-interaction --no-progress --no-suggest --optimize-autoloader --verbose --profile; fi
+  - if [[ ! $PHPCS_TEST ]]; then composer install --prefer-dist --no-interaction --no-progress --no-suggest --optimize-autoloader --verbose --profile; fi
 
 script:
   - if [[ $PHPUNIT_TEST ]]; then vendor/bin/phpunit; fi