Add PHP unit tests

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4dev/tests/phpunit_flow_check.php

@@ -0,0 +1,58 @@
+<?php
+
+declare(strict_types=1);
+
+namespace test;
+
+use PHPUnit\Framework\TestCase;
+
+final class TemplateMethodsTest extends TestCase
+{
+	public static function setUpBeforeClass(): void
+	{
+		fwrite(STDOUT, __METHOD__ . "\n");
+	}
+
+	protected function setUp(): void
+	{
+		fwrite(STDOUT, __METHOD__ . "\n");
+	}
+
+	protected function assertPreConditions(): void
+	{
+		fwrite(STDOUT, __METHOD__ . "\n");
+	}
+
+	public function testOne(): void
+	{
+		fwrite(STDOUT, __METHOD__ . "\n");
+		$this->assertTrue(true);
+	}
+
+	public function testTwo(): void
+	{
+		fwrite(STDOUT, __METHOD__ . "\n");
+		$this->assertTrue(false);
+	}
+
+	protected function assertPostConditions(): void
+	{
+		fwrite(STDOUT, __METHOD__ . "\n");
+	}
+
+	protected function tearDown(): void
+	{
+		fwrite(STDOUT, __METHOD__ . "\n");
+	}
+
+	public static function tearDownAfterClass(): void
+	{
+		fwrite(STDOUT, __METHOD__ . "\n");
+	}
+
+	protected function onNotSuccessfulTest(\Throwable $t): void
+	{
+		fwrite(STDOUT, __METHOD__ . "\n");
+		throw $t;
+	}
+}