Merge pull request #34 from PiPHP/php-7.3

Define PHP 7.3 as required. Upgrade to PHPUnit 9

Author: svpernova09

composer.json

@@ -19,8 +19,11 @@
             "PiPHP\\Test\\GPIO\\": "test/"
         }
     },
+    "require": {
+        "php": "^7.3"
+    },
     "require-dev": {
-        "phpunit/phpunit": "^5.7"
+        "phpunit/phpunit": "^9.3"
     },
     "scripts": {
         "test": [

phpunit.xml.dist

@@ -5,13 +5,4 @@
             <directory>test</directory>
         </testsuite>
     </testsuites>
-    <filter>
-        <whitelist>
-            <directory>src</directory>
-        </whitelist>
-        <blacklist>
-            <directory>vendor</directory>
-            <directory>test</directory>
-        </blacklist>
-    </filter>
 </phpunit>

test/FileSystem/FileSystemTest.php

@@ -2,10 +2,11 @@
 
 namespace PiPHP\Test\GPIO\FileSystem;
 
+use PHPUnit\Framework\TestCase;
 use PiPHP\GPIO\FileSystem\FileSystem;
 use RuntimeException;
 
-class FileSystemTest extends \PHPUnit_Framework_TestCase
+class FileSystemTest extends TestCase
 {
     public function testFileSystem()
     {

test/Interrupt/InterruptWatcherTest.php

@@ -2,10 +2,11 @@
 
 namespace PiPHP\Test\GPIO;
 
+use PHPUnit\Framework\TestCase;
 use PiPHP\GPIO\GPIO;
 use PiPHP\GPIO\FileSystem\FileSystemInterface;
 
-class InterruptWatcherTest extends \PHPUnit_Framework_TestCase
+class InterruptWatcherTest extends TestCase
 {
     public function testWatcher()
     {

test/Pin/InputPinTest.php

@@ -2,10 +2,11 @@
 
 namespace PiPHP\Test\GPIO\Pin;
 
+use PHPUnit\Framework\TestCase;
 use PiPHP\GPIO\GPIO;
 use PiPHP\Test\GPIO\FileSystem\VFS;
 
-class InputPinTest extends \PHPUnit_Framework_TestCase
+class InputPinTest extends TestCase
 {
     public function testInputPin()
     {

test/Pin/OutputPinTest.php

@@ -2,10 +2,11 @@
 
 namespace PiPHP\Test\GPIO\Pin;
 
+use PHPUnit\Framework\TestCase;
 use PiPHP\GPIO\GPIO;
 use PiPHP\Test\GPIO\FileSystem\VFS;
 
-class OutputPinTest extends \PHPUnit_Framework_TestCase
+class OutputPinTest extends TestCase
 {
     public function testOutputPin()
     {