Adds github workflow to run automated tests

.editorconfig

@@ -0,0 +1,28 @@
+root = true
+
+[*]
+charset = utf-8
+tab_width = 4
+trim_trailing_whitespace = true
+indent_size = tab
+indent_style = tab
+insert_final_newline = true
+end_of_line = lf
+
+[{*.yml,*.yml.dist}]
+indent_style = space
+indent_size = 2
+tab_width = 2
+
+[*.xml]
+tab_width = 2
+
+[*.json]
+tab_width = 2
+
+[COMMIT_EDITMSG]
+max_line_length = 72
+
+[*.md]
+max_line_length = 80
+

.github/workflows/ci.yml

@@ -0,0 +1,24 @@
+name: CI
+on: [push, pull_request]
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php-versions: [ '7.4', '8.0', '8.1', '8.2', '8.3', '8.4' ]
+    name: Test on ${{ matrix.php-versions }}
+    steps:
+      - uses: actions/checkout@v4
+      - name: install Ghostscript
+        run: sudo apt-get install -y ghostscript
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-versions }}
+      - name: install dependencies
+        run: composer install
+      - name: install tools
+        run: composer require --dev phpunit/phpunit
+      - name: Run Unit-Tests
+        run: ./vendor/bin/phpunit --testdox --coverage-text
+

.gitignore

@@ -1 +1,3 @@
 /vendor/
+composer.lock
+.phpunit.result.cache

composer.json

@@ -3,6 +3,9 @@
     "description": "A PHP-Wrapper around the Ghostscript-CLI",
     "type": "library",
     "license": "MIT",
+	"require": {
+		"php": "^7.4||^8.0"
+	},
     "authors": [
         {
             "name": "Andreas Heigl",
@@ -20,8 +23,7 @@
         }
     },
     "require-dev": {
-      "phpunit/phpunit": "^5.5||^6.0||^7.0",
-      "phpdocumentor/phpdocumentor": "^2.9",
+      "phpunit/phpunit": "^9.0",
       "mockery/mockery": "^1.0"
 
     },

phpunit.xml.dist

@@ -1,27 +1,27 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit bootstrap="./vendor/autoload.php">
-    <testsuite name="Org_Heigl\Ghostscript Test-Suite">
-        <directory>./tests</directory>
-    </testsuite>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.6/phpunit.xsd"
+         bootstrap="vendor/autoload.php"
+         cacheResultFile=".phpunit.cache/test-results"
+         executionOrder="depends,defects"
+         forceCoversAnnotation="false"
+         beStrictAboutCoversAnnotation="false"
+         beStrictAboutOutputDuringTests="true"
+         beStrictAboutTodoAnnotatedTests="true"
+         convertDeprecationsToExceptions="true"
+         failOnRisky="true"
+         failOnWarning="true"
+         verbose="true">
+    <testsuites>
+        <testsuite name="default">
+            <directory>tests</directory>
+        </testsuite>
+    </testsuites>
 
-    <groups>
-        <exclude>
-            <group>disable</group>
-        </exclude>
-    </groups>
-
-	<filter>
-		<whitelist>
-			<directory suffix=".php">src</directory>
-		</whitelist>
-	</filter>
-
-    <logging>
-        <!-- 
-            Adapt these paths to your special needs 
-        -->
-	    <log type="coverage-html" target="build/phpunit/coverage" charset="UTF-8"
-	         yui="true" highlight="false"
-	         lowUpperBound="35" highLowerBound="70"/>
-    </logging>
+    <coverage cacheDirectory=".phpunit.cache/code-coverage"
+              processUncoveredFiles="true">
+        <include>
+            <directory suffix=".php">src</directory>
+        </include>
+    </coverage>
 </phpunit>

tests/GhostscriptTest.php

@@ -42,7 +42,7 @@
  */
 class GhostscriptTest extends TestCase
 {
-    public function setup()
+    public function setup(): void
     {
         Ghostscript::setGsPath();
     }
@@ -58,11 +58,9 @@ public function testForNonEmptyGhostscriptPath()
         $this->assertNotEquals(null, $path);
     }
 
-    /**
-     * @expectedException \InvalidArgumentException
-     */
     public function testSettingFileWorks()
     {
+		$this->expectException(\InvalidArgumentException::class);
         $f = new Ghostscript();
         $f->setInputFile(__FILE__);
         $comp = new \SplFileInfo(__FILE__);
@@ -91,7 +89,7 @@ public function testSettingOutfileIsRepresentedInRenderString($outfile, $expecte
         $f->setDevice(new Png());
         $f->setInputFile(__DIR__ . '/support/test.pdf');
         $f->setOutputFile($outfile);
-        $this->assertContains($expectedResultInRenderString, $f->getRenderString());
+        $this->assertStringContainsString($expectedResultInRenderString, $f->getRenderString());
     }
 
     public function settingOutfileIsRepresentedInRenderStringProvider()
@@ -247,18 +245,12 @@ public function testRendering()
     public function testSettingPages()
     {
         $f = new Ghostscript();
-        $this->assertAttributeEquals(null, 'pageStart', $f);
-        $this->assertAttributeEquals(null, 'pageEnd', $f);
         $this->assertEmpty($f->getPageRangeString());
 
         $f->setPages(2);
-        $this->assertAttributeEquals(2, 'pageStart', $f);
-        $this->assertAttributeEquals(null, 'pageEnd', $f);
         $this->assertEquals(' -dFirstPage=2 -dLastPage=2', $f->getPageRangeString());
 
         $f->setPages(3, 4);
-        $this->assertAttributeEquals(3, 'pageStart', $f);
-        $this->assertAttributeEquals(4, 'pageEnd', $f);
         $this->assertEquals(' -dFirstPage=3 -dLastPage=4', $f->getPageRangeString());
     }
 
@@ -274,7 +266,8 @@ public function testSettingDefaultGsPathFails()
             $this->markTestSkipped('Can not test due to installed GS');
         }
 
-        $this->setExpectedExceptionFromAnnotation();
+		$this->expectException(\UnexpectedValueException::class);
+        $this->expectExceptionMessage('No Ghostscript-instance found or running on windows.');
 
         Ghostscript::setGsPath();
     }
@@ -288,34 +281,29 @@ public function testSettingDefaultGsPathWorks()
 
         Ghostscript::setGsPath();
 
-        $this->assertAttributeEquals($output[0], 'PATH', Ghostscript::class);
+        $this->assertEquals($output[0], Ghostscript::getGsPath());
     }
 
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage The given file is not executable
-     */
     public function testThatSettingPathToNonExecutableFails()
     {
+		$this->expectException(\InvalidArgumentException::class);
+		$this->expectExceptionMessage('The given file is not executable');
         Ghostscript::setGsPath(__DIR__ . '/_assets/nonExecutable');
     }
 
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage No valid Ghostscript found
-     */
     public function testThatSettingPathToNonGsFails()
     {
-        Ghostscript::setGsPath(__DIR__ . '/_assets/executableNonGs');
+		$this->expectException(\InvalidArgumentException::class);
+		$this->expectExceptionMessage('No valid Ghostscript found');
+		Ghostscript::setGsPath(__DIR__ . '/_assets/executableNonGs');
     }
 
     public function testThatSettingPathToSomethingGsLikeWorks()
     {
         Ghostscript::setGsPath(__DIR__ . '/_assets/executableGs');
-        $this->assertAttributeEquals(
+        $this->assertEquals(
             __DIR__ . '/_assets/executableGs',
-            'PATH',
-            Ghostscript::class
+            Ghostscript::getGsPath()
         );
     }