Add travis configuration

Author: iquito

.travis.yml

@@ -0,0 +1,24 @@
+env:
+    global:
+        - CC_TEST_REPORTER_ID=300652b345e59425b0203fd817ea93f39a436ef531b5731f0378b5ec3c755d33
+        - GIT_COMMITTED_AT=$(if [ "$TRAVIS_PULL_REQUEST" == "false" ]; then git log -1 --pretty=format:%ct; else git log -1 --skip 1 --pretty=format:%ct; fi)
+language: php
+php:
+    - '7.4'
+
+before_script:
+    - composer self-update
+    - composer install --prefer-source --no-interaction --dev
+    - curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
+    - chmod +x ./cc-test-reporter
+    - ./cc-test-reporter before-build
+
+script:
+    - composer phpunit_clover
+    - composer phpstan
+    - composer psalm
+    - composer phpcs
+    - if [ "$TRAVIS_PULL_REQUEST" == "false" ]; then ./cc-test-reporter after-build  -t clover --exit-code $TRAVIS_TEST_RESULT; fi
+
+notifications:
+    email: false

vendor-bin/phpunit/composer.json

@@ -1,5 +1,5 @@
 {
     "require": {
-        "phpunit/phpunit": "^8.4"
+        "phpunit/phpunit": "^9.0"
     }
 }