feat: Implement a fixture callback class using the PHPUnit TestListener interface.

lib/Cake/TestSuite/Fixture/CakeFixtureInjector.php

@@ -0,0 +1,67 @@
+<?php
+
+use PHPUnit\Framework\AssertionFailedError;
+use PHPUnit\Framework\Test;
+use PHPUnit\Framework\TestListener;
+use PHPUnit\Framework\TestSuite;
+use PHPUnit\Framework\Warning;
+
+/**
+ * @property CakeFixtureManager $_fixtureManager
+ * @property TestSuite $_first
+ */
+class CakeFixtureInjector implements TestListener {
+
+	protected $_fixtureManager;
+
+	protected $_first;
+
+	public function __construct(?CakeFixtureManager $manager = null) {
+		$this->_fixtureManager = $manager ?? new CakeFixtureManager();
+		$this->_fixtureManager->shutDown();
+	}
+
+	public function startTestSuite(TestSuite $suite) : void {
+		if (empty($this->_first)) {
+			$this->_first = $suite;
+		}
+	}
+
+	public function endTestSuite(TestSuite $suite) : void {
+		if ($this->_first === $suite) {
+			$this->_fixtureManager->shutDown();
+		}
+	}
+
+	public function startTest(Test $test) : void {
+		$test->fixtureManager = $this->_fixtureManager;
+		if ($test instanceof CakeTestCase) {
+			$this->_fixtureManager->fixturize($test);
+			$this->_fixtureManager->load($test);
+		}
+	}
+
+	public function endTest(Test $test, $time) : void {
+		if ($test instanceof CakeTestCase) {
+			$this->_fixtureManager->unload($test);
+		}
+	}
+
+	public function addError(Test $test, Throwable $e, $time) : void {
+	}
+
+	public function addFailure(Test $test, AssertionFailedError $e, $time) : void {
+	}
+
+	public function addIncompleteTest(Test $test, Throwable $e, $time) : void {
+	}
+
+	public function addSkippedTest(Test $test, Throwable $e, $time) : void {
+	}
+
+	public function addRiskyTest(Test $test, Throwable $e, $time) : void {
+	}
+
+	public function addWarning(Test $test, Warning $e, float $time) : void {
+	}
+}

phpunit.xml.dist

@@ -7,4 +7,7 @@
 	<php>
 		<ini name="memory_limit" value="-1"/>
 	</php>
+	<listeners>
+		<listener class="CakeFixtureInjector" file="./lib/Cake/TestSuite/Fixture/CakeFixtureInjector.php"/>
+	</listeners>
 </phpunit>