minor symfony#15473 [travis] Build standalone phpunit without symfony/yaml (nicolas-grekas)

This PR was merged into the 2.3 branch.

Discussion
----------

[travis] Build standalone phpunit without symfony/yaml

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

phpunit mixed as a dependency does not work at all. Let's build it standalone, without symfony/yaml.

Commits
-------

4dd0de6 [travis] Build standalone phpunit without symfony/yaml

Author: nicolas-grekas

.travis.yml

@@ -36,20 +36,19 @@ before_install:
     - if [[ "$TRAVIS_PHP_VERSION" != "nightly" ]] && [[ "$TRAVIS_PHP_VERSION" != "hhvm" ]] && [ $(php -r "echo PHP_MINOR_VERSION;") -le 4 ]; then echo "extension = apc.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini; fi;
     - if [[ "$TRAVIS_PHP_VERSION" != "nightly" ]] && [[ "$TRAVIS_PHP_VERSION" != "hhvm" ]]; then (pecl install -f memcached-2.1.0 && echo "extension = memcache.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini) || echo "Let's continue without memcache extension"; fi;
     - if [[ "$TRAVIS_PHP_VERSION" != "nightly" ]] && [[ "$TRAVIS_PHP_VERSION" != "hhvm" ]]; then php -i; fi;
+    # Build a standalone phpunit without symfony/yaml and that works around https://github.com/sebastianbergmann/phpunit-mock-objects/issues/223
+    - (mkdir phpunit && cd phpunit && wget https://github.com/sebastianbergmann/phpunit/archive/4.7.zip && unzip 4.7.zip && cd phpunit-4.7 && composer remove --no-update symfony/yaml && composer require --prefer-source phpunit/phpunit-mock-objects '2.3.0')
+    - export PHPUNIT="$(readlink -f ./phpunit/phpunit-4.7/phpunit) --colors=always"
     # Set the COMPOSER_ROOT_VERSION to the right version according to the branch being built
     - if [ "$TRAVIS_BRANCH" = "master" ]; then export COMPOSER_ROOT_VERSION=dev-master; else export COMPOSER_ROOT_VERSION="$TRAVIS_BRANCH".x-dev; fi;
 
 install:
-    - composer --prefer-source install
-    - composer require --no-update phpunit/phpunit '*'
-    - composer require --no-update phpunit/phpunit-mock-objects '2.3.0' # See https://github.com/sebastianbergmann/phpunit-mock-objects/issues/223
-    - composer update --prefer-stable --prefer-source phpunit/phpunit
+    - if [ "$deps" = "no" ]; then composer --prefer-source install; fi;
     - components=$(find src/Symfony -mindepth 3 -type f -name phpunit.xml.dist -printf '%h\n')
     - if [ "$deps" != "no" ]; then php .travis.php $TRAVIS_COMMIT_RANGE $TRAVIS_BRANCH $components; fi;
-    - PHPUNIT="$(readlink -f ./vendor/bin/phpunit) --colors=always"
 
 script:
-    - if [ "$deps" = "no" ]; then echo "$components" | parallel --gnu --keep-order 'echo -e "\\nRunning {} tests"; '$PHPUNIT' --exclude-group tty,benchmark,intl-data {} || (echo -e "\\e[41mKO\\e[0m {}" && $(exit 1));'; fi;
+    - if [ "$deps" = "no" ]; then echo "$components" | parallel --gnu --keep-order 'echo -e "\\nRunning {} tests"; $PHPUNIT --exclude-group tty,benchmark,intl-data {} || (echo -e "\\e[41mKO\\e[0m {}" && $(exit 1));'; fi;
     - if [ "$deps" = "no" ]; then echo -e "\\nRunning tests requiring tty"; $PHPUNIT --group tty || (echo -e "\\e[41mKO\\e[0m tty group" && $(exit 1)); fi;
-    - if [ "$deps" = "high" ]; then echo "$components" | parallel --gnu --keep-order -j10% 'echo -e "\\nRunning {} tests"; cd {}; composer --prefer-source update; '$PHPUNIT' --exclude-group tty,benchmark,intl-data || (echo -e "\\e[41mKO\\e[0m {}" && $(exit 1));'; fi;
-    - if [ "$deps" = "low" ]; then echo "$components" | parallel --gnu --keep-order -j10% 'echo -e "\\nRunning {} tests"; cd {}; composer --prefer-source --prefer-lowest --prefer-stable update; '$PHPUNIT' --exclude-group tty,benchmark,intl-data || (echo -e "\\e[41mKO\\e[0m {}" && $(exit 1));'; fi;
+    - if [ "$deps" = "high" ]; then echo "$components" | parallel --gnu --keep-order -j10% 'echo -e "\\nRunning {} tests"; cd {}; composer --prefer-source update; $PHPUNIT --exclude-group tty,benchmark,intl-data || (echo -e "\\e[41mKO\\e[0m {}" && $(exit 1));'; fi;
+    - if [ "$deps" = "low" ]; then echo "$components" | parallel --gnu --keep-order -j10% 'echo -e "\\nRunning {} tests"; cd {}; composer --prefer-source --prefer-lowest --prefer-stable update; $PHPUNIT --exclude-group tty,benchmark,intl-data || (echo -e "\\e[41mKO\\e[0m {}" && $(exit 1));'; fi;

src/Symfony/Bundle/TwigBundle/composer.json

@@ -25,6 +25,7 @@
         "symfony/stopwatch": "~2.2",
         "symfony/dependency-injection": "~2.2",
         "symfony/config": "~2.2",
+        "symfony/yaml": "~2.3",
         "symfony/framework-bundle": "~2.1"
     },
     "autoload": {