Add PHP 7 coverage

.travis.yml

@@ -7,18 +7,16 @@ php:
   - 5.6
   - 7
 
-matrix:
-  allow_failures:
-    - php: 7
-
 before_script:
-  - yes "" | pecl install eio
+  - php -r 'exit((int) (PHP_MAJOR_VERSION < 7));' || (yes "" | pecl install eio)
+  - php -r 'exit((int) (PHP_MAJOR_VERSION >= 7));' || (mkdir libuv && (curl -L https://github.com/libuv/libuv/archive/v1.6.1.tar.gz | tar xzf -) && cd libuv-1.6.1 && ./autogen.sh && ./configure --prefix=$(readlink -f `pwd`/../libuv) && make && make install && cd ..)
+  - php -r 'exit((int) (PHP_MAJOR_VERSION >= 7));' || (git clone https://github.com/bwoebi/php-uv && cd php-uv && phpize && ./configure --with-uv=$(readlink -f `pwd`/../libuv) && make install && (echo "extension = uv.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini) && cd ..)
   - composer self-update
   - composer require satooshi/php-coveralls:dev-master
   - composer install
 
 script:
-  - vendor/bin/phpunit --coverage-text --coverage-clover build/logs/clover.xml
+  - $(php -r 'if (PHP_MAJOR_VERSION >= 7) echo "phpdbg -qrr"; else echo "php";') vendor/bin/phpunit --coverage-text --coverage-clover build/logs/clover.xml
   - php vendor/bin/php-cs-fixer --diff --dry-run -v fix
 
 after_script:

composer.json

@@ -26,7 +26,7 @@
         "amphp/amp": "^1"
     },
     "require-dev": {
-        "phpunit/phpunit": "~4.4.0",
+        "phpunit/phpunit": "~4.8",
         "fabpot/php-cs-fixer": "~1.9"
     },
     "autoload": {