start ConfigLoader tests

bin/pest

@@ -29,9 +29,10 @@ use Symfony\Component\Console\Output\OutputInterface;
     $rootPath = dirname($autoloadPath, 2);
     $argv = new ArgvInput();
 
-    $phpunitConfig = new ConfigLoader($rootPath);
-
-    $testSuite = TestSuite::getInstance($rootPath, $argv->getParameterOption('--test-directory', $phpunitConfig->getTestsDirectory()));
+    $testSuite = TestSuite::getInstance(
+        $rootPath,
+        $argv->getParameterOption('--test-directory', (new ConfigLoader($rootPath))->getTestsDirectory())
+    );
 
     $isDecorated = $argv->getParameterOption('--colors', 'always') !== 'never';
     $output = new ConsoleOutput(ConsoleOutput::VERBOSITY_NORMAL, $isDecorated);

src/ConfigLoader.php

@@ -13,14 +13,17 @@ use Throwable;
  */
 final class ConfigLoader
 {
-    private ?SimpleXMLElement $config = null;
-
     /**
      * Default path if config loading went wrong.
      *
      * @var string
      */
-    private const DEFAULT_TESTS_PATH = 'tests';
+    public const DEFAULT_TESTS_PATH = 'tests';
+
+    /**
+     * XML tree of the PHPUnit configuration file.
+     */
+    private ?SimpleXMLElement $config = null;
 
     /**
      * Creates a new instance of the config loader.
@@ -62,6 +65,26 @@ final class ConfigLoader
         return is_dir($basePath) ? $basePath : self::DEFAULT_TESTS_PATH;
     }
 
+    /**
+     * Get the configuration file path.
+     */
+    public function getConfigurationFilePath(): string|false
+    {
+        $candidates = [
+            $this->rootPath . '/phpunit.xml',
+            $this->rootPath . '/phpunit.dist.xml',
+            $this->rootPath . '/phpunit.xml.dist',
+        ];
+
+        foreach ($candidates as $candidate) {
+            if (is_file($candidate)) {
+                return realpath($candidate);
+            }
+        }
+
+        return false;
+    }
+
     /**
      * Load the configuration file.
      */
@@ -87,24 +110,4 @@ final class ConfigLoader
         // Restore the correct error reporting
         error_reporting($oldReportingLevel);
     }
-
-    /**
-     * Get the configuration file path.
-     */
-    private function getConfigurationFilePath(): string|false
-    {
-        $candidates = [
-            $this->rootPath . '/phpunit.xml',
-            $this->rootPath . '/phpunit.dist.xml',
-            $this->rootPath . '/phpunit.xml.dist',
-        ];
-
-        foreach ($candidates as $candidate) {
-            if (is_file($candidate)) {
-                return realpath($candidate);
-            }
-        }
-
-        return false;
-    }
 }

tests/Unit/ConfigLoader.php

@@ -0,0 +1,19 @@
+<?php
+
+use Pest\ConfigLoader;
+use Pest\Support\Reflection;
+
+it('fallbacks to default path if no phpunit file is found', function () {
+    $instance = new ConfigLoader('fake-path');
+
+    expect(Reflection::getPropertyValue($instance, 'config'))->toBeNull();
+    expect($instance->getConfigurationFilePath())->toBeFalse();
+    expect($instance->getTestsDirectory())->toBe(ConfigLoader::DEFAULT_TESTS_PATH);
+});
+
+it('fallbacks to default path if phpunit is not a valid XML')->skip();
+it('fallbacks to default path if failing to read phpunit content')->skip();
+it('fallbacks to default path if there is no test suites directory')->skip();
+it('fallbacks to default path if test suite directory has no value')->skip();
+it('fallbacks to default path if test suite directory does not exist')->skip();
+it('returns the parent folder of first test suite directory')->skip();