c3.php throwing PHP Warnings with Vagrant

Reproduce el fallo con el comando de Codeception indicado dentro de Vagrant e inspecciona tests/_output/c3tmp. Empieza por las líneas 184-194 y 318-321 de c3.php y, después, compara las advertencias notificadas sobre archivos y bloqueos con los permisos del directorio. La tarea está terminada cuando las pruebas funcionales y las aserciones JSON se completan sin estas advertencias ni el error fatal posterior.

Description

I seem to receiving an error when trying to generate code coverage for functional tests inside Vagrant. The tests run and the code coverage generates fine but some test fail (namely any check on the response being valid JSON) due to PHP Warnings being thrown by the c3.php file.

Steps

When ssh'd into vagrant, I run this command:

./vendor/bin/codecept run functional --coverage-html=blah tests/functional/Company/Product/CategoriesCest.php

All 3 tests fail when trying to assert $I->seeResponseIsJson();. When taking a look at the failure report generate in tests/_output/tests.Company.Product.CategoriesCest.orderCategoriesDesc.fail.html I see the following error:

Warning: file_put_contents(/var/www/phpapps/api.testurl.test/tests/_output/c3tmp/codecoverage.serialized): failed to open stream: Permission denied in /var/www/phpapps/api.testurl.test/c3.php on line 321

At line 321, c3.php is trying to execute:

https://github.com/Codeception/c3/blob/f08f20b0b6191f0c58be022c6f20d5b1cdc1004c/c3.php#L320-L322

which it can't complete because the permissions for c3tmp directory are as follows:

drwxr-xr-x 1 vagrant vagrant     68 Aug 10 08:55 c3tmp/

I'm puzzled as to why codeception wouldn't have permissions to write codecoverage.serialized in c3tmp/ when it has created the directory itself... Furthermore, applying full read-write permissions to the c3tmp/ via:

chmod -R 777 tests/_output/c3tmp/

results in even more PHP Warnings being generated seemingly from the same type of issue i.e incorrect file permissions, read-write lock etc. I've detailed these issues below:

Warning: fopen(/var/www/phpapps/api.testurl.test/tests/_output/c3tmp/codecoverage.serialized): failed to open stream: Permission denied in /var/www/phpapps/api.testurl.test/c3.php on line 184

Warning: flock() expects parameter 1 to be resource, boolean given in /var/www/phpapps/api.testurl.test/c3.php on line 185

Notice: Undefined variable: phpCoverage in /var/www/phpapps/api.testurl.test/c3.php on line 194

Fatal error: Call to a member function merge() on a non-object in /var/www/phpapps/api.testurl.test/c3.php on line 318

Additional Information

• Vagrant: Vagrant 1.9.2

• PHP: PHP 5.5.9-1ubuntu4.20 (cli)

• functional.suite.dist.yml

class_name: FunctionalTester
error_level: -1
coverage:
    enabled: true
modules:
    enabled: [PhpBrowser, REST, Asserts, FunctionalHelper]
    config:
        PhpBrowser:
            url: http://api.testurl.test/
        REST:
            url: http://api.testurl.test/

• codeception.yml

actor: Tester
paths:
    tests: tests
    log: tests/_output
    data: tests/_data
    helpers: tests/_support
settings:
    bootstrap: _bootstrap.php
    colors: true
    memory_limit: 1024M
coverage:
    enabled: true
    whitelist:
        include:
            - src/*
            - public/*
        exclude:
            - src/Company/*/apidoc.json
            - src/Company/*/apiDocVersioning/*