require php 7.0 version, update tests configuration

Author: igor-chepurnoi

.travis.yml

@@ -1,26 +1,22 @@
 language: php
 
 php:
-  - 5.4
-  - 5.5
-  - 5.6
   - 7.0
+  - 7.1
 
 # faster builds on new travis setup not using sudo
 sudo: false
 
-# cache vendor dirs
+# cache dirs
 cache:
   directories:
     - $HOME/.composer/cache
-    - vendor
 
 install:
   - travis_retry composer self-update && composer --version
-  - travis_retry composer global require "fxp/composer-asset-plugin:~1.1.1"
   - export PATH="$HOME/.composer/vendor/bin:$PATH"
   - travis_retry composer install --prefer-dist --no-interaction
 
 script:
   - vendor/friendsofphp/php-cs-fixer/php-cs-fixer fix --dry-run --diff
-  - phpunit --verbose $PHPUNIT_FLAGS
+  - phpunit

composer.json

@@ -10,11 +10,12 @@
     "license": "MIT",
     "authors": [
         {
-            "name": "Igor Chepurnoy",
-            "email": "igorzfort@gmail.com"
+            "name": "Igor Chepurnoi",
+            "email": "chepurnoi.igor@gmail.com"
         }
     ],
     "require": {
+        "php": ">=7.0.0",
         "yiisoft/yii2": "*"
     },
     "require-dev": {
@@ -24,5 +25,11 @@
         "psr-4": {
             "yii2mod\\query\\": ""
         }
-    }
+    },
+    "repositories": [
+        {
+            "type": "composer",
+            "url": "https://asset-packagist.org"
+        }
+    ]
 }

tests/TestCase.php

@@ -8,7 +8,7 @@
 /**
  * This is the base class for all yii framework unit tests.
  */
-class TestCase extends \PHPUnit_Framework_TestCase
+class TestCase extends \PHPUnit\Framework\TestCase
 {
     protected function setUp()
     {