Fix Travis builds for 1.0 and 1.1 recipes, add PHP 7.3 and various core recipe versions

Author: robbieaverill

.travis.yml

@@ -7,13 +7,15 @@ env:
 matrix:
   include:
     - php: 5.6
-      env: DB=MYSQL PHPCS_TEST=1 PHPUNIT_TEST=1
+      env: DB=MYSQL RECIPE_VERSION=1.0.x-dev PHPCS_TEST=1 PHPUNIT_TEST=1
     - php: 7.0
-      env: DB=MYSQL PHPUNIT_TEST=1
+      env: DB=MYSQL RECIPE_VERSION=1.1.x-dev PHPUNIT_TEST=1
     - php: 7.1
-      env: DB=MYSQL PHPUNIT_COVERAGE_TEST=1 CMS=1
+      env: DB=MYSQL RECIPE_VERSION=4.2.x-dev PHPUNIT_COVERAGE_TEST=1
     - php: 7.2
-      env: DB=MYSQL PHPUNIT_TEST=1
+      env: DB=MYSQL RECIPE_VERSION=4.3.x-dev PHPUNIT_TEST=1
+    - php: 7.3
+      env: DB=MYSQL RECIPE_VERSION=4.x-dev PHPUNIT_TEST=1
 
 before_script:
   # Init PHP
@@ -22,13 +24,11 @@ before_script:
 
   # Install composer dependencies
   - composer validate
-  - if [[ $CMS ]]; then composer require --no-update silverstripe/recipe-cms 1.0.x-dev; fi
-  - if [[ ! $CMS ]]; then composer require --no-update silverstripe/recipe-core 1.0.x-dev; fi
+  - composer require --no-update silverstripe/recipe-cms:"$RECIPE_VERSION"
   - composer install --prefer-dist --no-interaction --no-progress --no-suggest --optimize-autoloader --verbose --profile
 
 script:
   - if [[ $PHPUNIT_TEST ]]; then vendor/bin/phpunit; fi
-  # Coverage runs also run with the CMS
   - if [[ $PHPUNIT_COVERAGE_TEST ]]; then phpdbg -qrr vendor/bin/phpunit --coverage-clover=coverage.xml --bootstrap=vendor/silverstripe/cms/tests/bootstrap.php; fi
   - if [[ $PHPCS_TEST ]]; then vendor/bin/phpcs code/ tests/ *.php; fi