Added php-cs-fixer coding standards validation to Travis CI (#14100)

* php-cs-fixer: PSR2 rule.

* php-cs-fixer: PSR2 rule - fix views.

* Travis setup refactoring.

* Add php-cs-fixer to travis cs tests.

* Fix tests on hhvm-3.12

* improve travis config

* composer update

* revert composer update

* improve travis config

* Fix CS.

* Extract config to separate classes.

* Extract config to separate classes.

* Add file header.

* Force short array syntax.

* binary_operator_spaces fixer

* Fix broken tests

* cast_spaces fixer

* concat_space fixer

* dir_constant fixer

* ereg_to_preg fixer

* function_typehint_space fixer

* hash_to_slash_comment fixer

* is_null fixer

* linebreak_after_opening_tag fixer

* lowercase_cast fixer

* magic_constant_casing fixer

* modernize_types_casting fixer

* native_function_casing fixer

* new_with_braces fixer

* no_alias_functions fixer

* no_blank_lines_after_class_opening fixer

* no_blank_lines_after_phpdoc fixer

* no_empty_comment fixer

* no_empty_phpdoc fixer

* no_empty_statement fixer

* no_extra_consecutive_blank_lines fixer

* no_leading_import_slash fixer

* no_leading_namespace_whitespace fixer

* no_mixed_echo_print fixer

* no_multiline_whitespace_around_double_arrow fixer

* no_multiline_whitespace_before_semicolons fixer

* no_php4_constructor fixer

* no_short_bool_cast fixer

* no_singleline_whitespace_before_semicolons fixer

* no_spaces_around_offset fixer

* no_trailing_comma_in_list_call fixer

* no_trailing_comma_in_singleline_array fixer

* no_unneeded_control_parentheses fixer

* no_unused_imports fixer

* no_useless_return fixer

* no_whitespace_before_comma_in_array fixer

* no_whitespace_in_blank_line fixer

* not_operator_with_successor_space fixer

* object_operator_without_whitespace fixer

* ordered_imports fixer

* php_unit_construct fixer

* php_unit_dedicate_assert fixer

* php_unit_fqcn_annotation fixer

* phpdoc_indent fixer

* phpdoc_no_access fixer

* phpdoc_no_empty_return fixer

* phpdoc_no_package fixer

* phpdoc_no_useless_inheritdoc fixer

* Fix broken tests

* phpdoc_return_self_reference fixer

* phpdoc_single_line_var_spacing fixer

* phpdoc_single_line_var_spacing fixer

* phpdoc_to_comment fixer

* phpdoc_trim fixer

* phpdoc_var_without_name fixer

* psr4 fixer

* self_accessor fixer

* short_scalar_cast fixer

* single_blank_line_before_namespace fixer

* single_quote fixer

* standardize_not_equals fixer

* ternary_operator_spaces fixer

* trailing_comma_in_multiline_array fixer

* trim_array_spaces fixer

* protected_to_private fixer

* unary_operator_spaces fixer

* whitespace_after_comma_in_array fixer

* `parent::setRules()` -> `$this->setRules()`

* blank_line_after_opening_tag fixer

* Update finder config.

* Revert changes for YiiRequirementChecker.

* Fix array formatting.

* Add missing import.

* Fix CS for new code merged from master.

* Fix some indentation issues.

.php_cs

@@ -0,0 +1,29 @@
+<?php
+
+if (!class_exists('yii\cs\YiisoftConfig', true)) {
+    // @todo change error message
+    fwrite(STDERR, "Your php-cs-version is outdated: please upgrade it.\n");
+    die(16);
+}
+
+return yii\cs\YiisoftConfig::create()
+    ->setCacheFile(__DIR__ . '/tests/runtime/php_cs.cache')
+    ->mergeRules([
+        'braces' => [
+            'allow_single_line_closure' => true,
+        ],
+    ])
+    ->setFinder(
+        PhpCsFixer\Finder::create()
+            ->in(__DIR__)
+            ->exclude('docs')
+            ->exclude('apps')
+            ->exclude('extensions')
+            // requirement checker should work even on PHP 4.3, so it needs special treatment
+            ->exclude('framework/requirements')
+            ->notPath('framework/classes.php')
+            ->notPath('framework/helpers/mimeTypes.php')
+            ->notPath('framework/views/messageConfig.php')
+            // temporary disable messages processing - conflicts with header fixer
+            ->exclude('framework/messages')
+    );

.travis.yml

@@ -23,17 +23,54 @@ sudo: false
 
 language: php
 
-php:
-  - 5.4
-  - 5.5
-  - 5.6
-  - 7.0
-  - 7.1
-  - nightly
+env:
+  global:
+    - DEFAULT_COMPOSER_FLAGS="--prefer-dist --no-interaction --no-progress --optimize-autoloader"
+    - TASK_TESTS_PHP=1
+    - TASK_TESTS_JS=0
+    - TASK_TESTS_CS=0
+    - TASK_TESTS_COVERAGE=0
+
+
+services:
+  - memcached
+  - mysql
+  - postgresql
+
+# cache vendor dirs
+cache:
+  directories:
+    - vendor
+    - $HOME/.composer/cache
+    - $HOME/.npm
+
+# try running against postgres 9.3
+addons:
+  postgresql: "9.3"
+  code_climate:
+    repo_token: 2935307212620b0e2228ab67eadd92c9f5501ddb60549d0d86007a354d56915b
 
 matrix:
   fast_finish: true
   include:
+    # test coding standards
+    - php: 7.1
+      env: TASK_TESTS_PHP=0 TASK_TESTS_CS=1
+      # overwrite services used for PHP tests
+      services:
+
+    # run tests coverage on PHP 7.1
+    - php: 7.1
+      env: TASK_TESTS_COVERAGE=1
+
+    - php: 7.0
+
+    - php: 5.6
+
+    - php: 5.5
+
+    - php: 5.4
+
     # Test against HHVM 3.12 LTS version by using trusty
     - php: hhvm-3.12
       sudo: true
@@ -49,6 +86,7 @@ matrix:
             - mysql-client-5.6
       services:
         - mysql
+
     # test against the latest HHVM version by using a newer image
     - php: hhvm
       sudo: true
@@ -66,98 +104,111 @@ matrix:
       services:
         - mysql
         - postgresql
+
+    - php: nightly
+
     # have a separate branch for javascript tests
     - language: node_js
       node_js: 6
+      env: TASK_TESTS_PHP=0 TASK_TESTS_JS=1
       dist: trusty
-      # overwrite php related settings
-      php:
+      # overwrite services used for PHP tests
       services:
-      addons:
-      install:
-        - travis_retry npm install
-        # disable xdebug for performance in composer
-        - phpenv config-rm xdebug.ini || echo "xdebug is not installed"
-        - travis_retry composer self-update && composer --version
-        - travis_retry composer install --prefer-dist --no-interaction
-      before_script:
-        - node --version
-        - npm --version
-        - php --version
-        - composer --version
-      script: npm test
-      after_script:
 
   allow_failures:
     - php: nightly
 
+install:
+  - |
+    if [[ $TASK_TESTS_COVERAGE != 1 && $TRAVIS_PHP_VERSION != hhv* ]]; then
+      # disable xdebug for performance reasons when code coverage is not needed. note: xdebug on hhvm is disabled by default
+      phpenv config-rm xdebug.ini || echo "xdebug is not installed"
+    fi
 
-services:
-  - memcached
-  - mysql
-  - postgresql
-
-# cache vendor dirs
-cache:
-  directories:
-    - vendor
-    - $HOME/.composer/cache
-    - $HOME/.npm
+  # install composer dependencies
+  - travis_retry composer self-update
+  - export PATH="$HOME/.composer/vendor/bin:$PATH"
+  - |
+    if [[ $TRAVIS_PHP_VERSION == "hhvm-3.12" ]]; then
+      # remove php-cs-fixer from composer dependencies on hhvm-3.12 - php-cs-fixer requires at least hhvm-3.18
+      composer remove friendsofphp/php-cs-fixer --dev
+    fi
+  - travis_retry composer install $DEFAULT_COMPOSER_FLAGS
 
-# try running against postgres 9.3
-addons:
-  postgresql: "9.3"
-  code_climate:
-    repo_token: 2935307212620b0e2228ab67eadd92c9f5501ddb60549d0d86007a354d56915b
+  # setup PHP extension
+  - |
+    if [ $TASK_TESTS_PHP == 1 ]; then
+      tests/data/travis/apc-setup.sh
+      tests/data/travis/memcache-setup.sh
+      tests/data/travis/imagick-setup.sh
+    fi
 
-install:
+  # setup JS test
   - |
-    if [[ $TRAVIS_PHP_VERSION != '7.1' && $TRAVIS_PHP_VERSION != hhv* ]]; then
-        # disable xdebug for performance reasons when code coverage is not needed. note: xdebug on hhvm is disabled by default
-        phpenv config-rm xdebug.ini || echo "xdebug is not installed"
+    if [ $TASK_TESTS_JS == 1 ]; then
+      travis_retry npm install
     fi
-  - travis_retry composer self-update && composer --version
-  - export PATH="$HOME/.composer/vendor/bin:$PATH"
-  # core framework:
-  - travis_retry composer install --prefer-dist --no-interaction
-  - tests/data/travis/apc-setup.sh
-  - tests/data/travis/memcache-setup.sh
-  - tests/data/travis/imagick-setup.sh
 
 before_script:
   # Disable the HHVM JIT for faster Unit Testing
   - if [[ $TRAVIS_PHP_VERSION = hhv* ]]; then echo 'hhvm.jit = 0' >> /etc/hhvm/php.ini; fi
+
   # show some versions and env information
-  - php -r "echo INTL_ICU_VERSION . \"\n\";"
-  - php -r "echo INTL_ICU_DATA_VERSION . \"\n\";"
-  - mysql --version
-  - psql --version
+  - php --version
+  - composer --version
+  - |
+    if [ $TASK_TESTS_PHP == 1 ]; then
+      php -r "echo INTL_ICU_VERSION . \"\n\";"
+      php -r "echo INTL_ICU_DATA_VERSION . \"\n\";"
+      psql --version
+      mysql --version
+    fi
+  - |
+    if [ $TASK_TESTS_JS == 1 ]; then
+      node --version
+      npm --version
+    fi
 
   # initialize databases
-  - travis_retry mysql -e 'CREATE DATABASE `yiitest`;';
-  - mysql -e "CREATE USER 'travis'@'localhost' IDENTIFIED WITH mysql_native_password;";
-  - mysql -e "GRANT ALL PRIVILEGES ON *.* TO 'travis'@'localhost' WITH GRANT OPTION;";
-  - psql -U postgres -c 'CREATE DATABASE yiitest;';
+  - |
+    if [ $TASK_TESTS_PHP == 1 ]; then
+      travis_retry mysql -e 'CREATE DATABASE `yiitest`;';
+      mysql -e "CREATE USER 'travis'@'localhost' IDENTIFIED WITH mysql_native_password;";
+      mysql -e "GRANT ALL PRIVILEGES ON *.* TO 'travis'@'localhost' WITH GRANT OPTION;";
+      psql -U postgres -c 'CREATE DATABASE yiitest;';
+    fi
 
-  # enable code coverage on PHP 7.1, only one PHP version needs to generate coverage data
+  # enable code coverage
   - |
-    if [ $TRAVIS_PHP_VERSION = '7.1' ]; then
+    if [ $TASK_TESTS_COVERAGE == 1 ]; then
       PHPUNIT_FLAGS="--coverage-clover=coverage.clover"
     fi
 
 
 script:
-  # ensure no files contain UTF-8 byte order mark
-  - if ! grep -rlI $'\xEF\xBB\xBF' framework/ ; then echo "no utf8 BOM found"; else echo "found utf8 BOM in some files. See above."; exit 1; fi
-  # validate composer.json
-  - composer validate --no-check-lock
-  - cd framework && composer validate --no-check-lock && cd ..
-  # run PHPUnit
-  - vendor/bin/phpunit --verbose $PHPUNIT_FLAGS --exclude-group mssql,oci,wincache,xcache,zenddata,cubrid
+  # test coding standards
+  - |
+    if [ $TASK_TESTS_CS == 1 ]; then
+      composer validate --no-check-lock
+      cd framework && composer validate --no-check-lock && cd ..
+      vendor/bin/php-cs-fixer --diff --dry-run -v fix
+    fi
+
+  # PHP tests
+  - |
+    if [ $TASK_TESTS_PHP == 1 ]; then
+      vendor/bin/phpunit --verbose $PHPUNIT_FLAGS --exclude-group mssql,oci,wincache,xcache,zenddata,cubrid
+    fi
+
+  # JS tests
+  - |
+    if [ $TASK_TESTS_JS == 1 ]; then
+      npm test
+    fi
 
 after_script:
   - |
-    if [ $TRAVIS_PHP_VERSION = '7.1' ]; then
+    if [ $TASK_TESTS_COVERAGE == 1 ]; then
       travis_retry wget https://scrutinizer-ci.com/ocular.phar
       php ocular.phar code-coverage:upload --format=php-clover coverage.clover
     fi