[Travis] Created Travis configuration (#6)

* [Composer] Added test script executing unit tests

* [Travis] Created .travis.yml

* [Travis] Enabled Slack notifications

.travis.yml

@@ -0,0 +1,56 @@
+language: php
+dist: xenial
+
+services:
+    - mysql
+
+cache:
+    directories:
+        - $HOME/.composer/cache/files
+
+matrix:
+    fast_finish: true
+    include:
+        - name: 'Unit tests on PHP 7.1'
+          php: '7.1'
+          env: CMD='composer test' MYSQL_DATABASE_URL='mysql://root@localhost/testdb'
+        - name: 'Unit tests on PHP 7.3'
+          php: '7.3'
+          env: CMD='composer test' MYSQL_DATABASE_URL='mysql://root@localhost/testdb'
+        - name: 'Code Style validation'
+          php: '7.3'
+          env: CMD='php ./vendor/bin/php-cs-fixer fix --dry-run -v --show-progress=estimating'
+
+# test only master, stable branches and pull requests
+branches:
+    only:
+        - master
+        - /^\d.\d+$/
+
+before_install:
+    # Disable memory_limit for composer
+    - echo "memory_limit=-1" >> ~/.phpenv/versions/$(phpenv version-name)/etc/conf.d/travis.ini
+    # Create MySQL database for tests
+    - mysql -e 'CREATE DATABASE testdb;'
+
+install:
+    - travis_retry composer install --no-progress --no-interaction --prefer-dist
+
+script:
+    - composer validate
+    - "$CMD"
+
+# reduce depth (history) of git checkout
+git:
+    depth: 10
+
+notifications:
+    # disable mail notifications
+    email: false
+    # enable Slack notifications
+    slack:
+        rooms:
+            - secure: "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"
+        on_success: change
+        on_failure: always
+        on_pull_requests: false

composer.json

@@ -27,7 +27,8 @@
         }
     },
     "scripts": {
-        "fix-cs": "@php ./vendor/bin/php-cs-fixer fix -v --show-progress=estimating"
+        "fix-cs": "@php ./vendor/bin/php-cs-fixer fix -v --show-progress=estimating",
+        "test": "@php ./vendor/bin/phpunit -vc phpunit.xml"
     },
     "extra": {
         "_ezplatform_branch_for_behat_tests": "master",