Adding GraphQLite bundle tests in Travis.

The idea is to check if the bundle is broken was modifications done to GraphQLite core.
The tests are allowed to fail as breaking changes may happen (we just need to be notified and apply fixes quickly after)

Author: moufmouf

.gitignore

@@ -15,3 +15,5 @@ website/build/
 website/yarn.lock
 website/node_modules
 website/i18n/*
+
+/tests/dependencies/graphqlite-bundle/

.travis.yml

@@ -37,6 +37,19 @@ jobs:
         - *composerupdate
       script:
         - *phpunit
+    - stage: test_dependencies
+      php: 7.3
+      env: PREFER_LOWEST=""
+      before_script:
+        - mkdir -p tests/dependencies
+        - rsync -av . tests/dependencies/copy/ --exclude tests --exclude vendor
+        - cd tests/dependencies
+        - git clone https://github.com/thecodingmachine/graphqlite-bundle.git
+        - ./makeComposerLocal.php graphqlite-bundle/composer.json
+        - cd graphqlite-bundle
+        - composer install
+      script:
+        - vendor/bin/phpunit
     - stage: doc
       if: branch = master AND type = push
       name: "Doc generation"
@@ -49,3 +62,6 @@ jobs:
         - git config --global user.email "${GH_EMAIL}"
         - echo "machine github.com login ${GH_NAME} password ${GH_TOKEN}" > ~/.netrc
         - cd website && yarn install && GIT_USER="${GH_NAME}" yarn run publish-gh-pages
+matrix:
+  allow_failures:
+    - stage: test_dependencies

tests/dependencies/makeComposerLocal.php

@@ -0,0 +1,15 @@
+#!/bin/env php
+<?php
+
+$file = $argv[1];
+
+$composer = json_decode(file_get_contents($file), true);
+
+$composer['repositories'] = [
+    [
+        'type' => 'path',
+        'url' => '../copy/'
+    ]
+];
+
+file_put_contents($file, json_encode($composer));