add support for the @group annotation at the class level

phpunit.xml.dist

@@ -6,6 +6,7 @@
             <directory>tests/Queue/</directory>
             <directory>tests/Process/</directory>
             <directory>tests/Environment/</directory>
+            <exclude>tests/Queue/Fixture/</exclude>
         </testsuite>
     </testsuites>
 

src/Queue/CreateTestsQueueFromPhpUnitXML.php

@@ -19,6 +19,18 @@ class_alias('\PHPUnit_Util_TestSuiteIterator', '\PHPUnit\Framework\TestSuiteIter
     class_alias('\PHPUnit_Util_Fileloader', '\PHPUnit\Util\Fileloader');
 }
 
+if (class_exists('\PHPUnit_Runner_Filter_Factory')) {
+    class_alias('\PHPUnit_Runner_Filter_Factory', '\PHPUnit\Runner\Filter\Factory');
+}
+
+if (class_exists('\PHPUnit_Runner_Filter_ExcludeGroupFilterIterator')) {
+    class_alias('\PHPUnit_Runner_Filter_ExcludeGroupFilterIterator', '\PHPUnit\Runner\Filter\ExcludeGroupFilterIterator');
+}
+
+if (class_exists('\PHPUnit_Runner_Filter_IncludeGroupFilterIterator')) {
+    class_alias('\PHPUnit_Runner_Filter_IncludeGroupFilterIterator', '\PHPUnit\Runner\Filter\IncludeGroupFilterIterator');
+}
+
 /*
  * Trigger autoload for possible file loader versions.
  * This fixes the problem with PHP classes being case insensitive versus composer case sensitive autoloader.
@@ -34,16 +46,52 @@ public static function execute($xmlFile)
         $testSuites = new TestsQueue();
 
         self::handleBootstrap($configuration->getPHPUnitConfiguration());
-        self::processTestSuite($testSuites, $configuration->getTestSuiteConfiguration()->getIterator());
+        $testSuite = static::filterTestSuite($configuration);
+        self::processTestSuite($testSuites, $testSuite->getIterator());
 
         return $testSuites;
     }
 
+    private static function filterTestSuite(
+        \PHPUnit\Util\Configuration $configuration
+    ) {
+        $testSuite = $configuration->getTestSuiteConfiguration();
+        $groupConfiguration = $configuration->getGroupConfiguration();
+
+        if (empty($groupConfiguration['exclude']) && empty($groupConfiguration['include'])) {
+            return $testSuite;
+        }
+
+        $filterFactory = new \PHPUnit\Runner\Filter\Factory();
+
+        if (!empty($groupConfiguration['exclude'])) {
+            $filterFactory->addFilter(
+                new \ReflectionClass(\PHPUnit\Runner\Filter\ExcludeGroupFilterIterator::class),
+                $groupConfiguration['exclude']
+            );
+        }
+
+        if (!empty($groupConfiguration['include'])) {
+            $filterFactory->addFilter(
+                new \ReflectionClass(\PHPUnit\Runner\Filter\IncludeGroupFilterIterator::class),
+                $groupConfiguration['include']
+            );
+        }
+
+        $testSuite->injectFilter($filterFactory);
+
+        return $testSuite;
+    }
+
     private static function processTestSuite(
         TestsQueue $testSuites,
-        \PHPUnit\Framework\TestSuiteIterator $testSuiteIterator
+        \RecursiveIterator $testSuiteIterator
     ) {
         foreach ($testSuiteIterator as $testSuite) {
+            if (0 === $testSuite->count()) {
+                continue;
+            }
+
             self::addTestFile($testSuites, $testSuite);
 
             if ($testSuite instanceof \PHPUnit\Framework\TestSuite) {

tests/Queue/CreateTestsQueueFromPhpUnitXMLTest.php

@@ -25,6 +25,11 @@ public function shouldCreateAnArrayOfTestSuitesFromXML()
             'ProcessorCounterTest.php',
         ];
 
+        $dummyDir = __DIR__.'/Fixture/tests/';
+        $dummyFiles = [
+            'DummyIncludedTest.php',
+        ];
+
         $queue = new TestsQueue();
 
         foreach ($infrastructureFiles as $file) {
@@ -35,6 +40,10 @@ public function shouldCreateAnArrayOfTestSuitesFromXML()
             $queue->add($processesDir.$file);
         }
 
+        foreach ($dummyFiles as $file) {
+            $queue->add($dummyDir.$file);
+        }
+
         $this->assertEquals($queue, $output);
     }
 }

tests/Queue/Fixture/phpunit.xml.dist

@@ -8,5 +8,18 @@
         <testsuite name="Processes Test Suite">
             <directory>../../Process/</directory>
         </testsuite>
+        <testsuite name="Dummy Test Suite">
+            <directory>./tests/</directory>
+        </testsuite>
     </testsuites>
+
+    <groups>
+        <include>
+            <group>default</group>
+            <group>dummy-included</group>
+        </include>
+        <exclude>
+            <group>dummy-excluded</group>
+        </exclude>
+    </groups>
 </phpunit>

tests/Queue/Fixture/tests/DummyExcludedTest.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace Liuggio\Fastest\Queue\Fixture\tests;
+
+/**
+ * @group dummy-excluded
+ */
+class DummyExcludedTest extends \PHPUnit\Framework\TestCase
+{
+    public function testDummyAssert()
+    {
+        $this->assertTrue(true);
+    }
+}

tests/Queue/Fixture/tests/DummyIncludedTest.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace Liuggio\Fastest\Queue\Fixture\tests;
+
+/**
+ * @group dummy-included
+ */
+class DummyIncludedTest extends \PHPUnit\Framework\TestCase
+{
+    public function testDummyAssert()
+    {
+        $this->assertTrue(true);
+    }
+}

tests/Queue/ReadFromInputAndPushIntoTheQueueTest.php

@@ -20,6 +20,11 @@ public function shouldPushIntoTheQueueTheXMLFile()
             'ProcessorCounterTest.php',
         ];
 
+        $dummyDir = __DIR__.'/Fixture/tests/';
+        $dummyFiles = [
+            'DummyIncludedTest.php',
+        ];
+
         $assertion = new TestsQueue();
 
         foreach ($files as $file) {
@@ -30,6 +35,10 @@ public function shouldPushIntoTheQueueTheXMLFile()
             $assertion->add($processesDir.$file);
         }
 
+        foreach ($dummyFiles as $file) {
+            $assertion->add($dummyDir.$file);
+        }
+
         $queue = $this->createMock('\Liuggio\Fastest\Queue\QueueInterface');
         $queue->expects($this->once())
             ->method('push')