diff --git a/src/Composer/DefaultStrategy.php b/src/Composer/DefaultStrategy.php
index 0fbc6cc..5531f21 100644
--- a/src/Composer/DefaultStrategy.php
+++ b/src/Composer/DefaultStrategy.php
@@ -7,12 +7,12 @@
  */
 namespace Bartlett\BoxManifest\Composer;
 
-use Bartlett\BoxManifest\Helper\ManifestFile;
-use Bartlett\BoxManifest\Helper\ManifestFormat;
-
 use InvalidArgumentException;
 use function class_exists;
+use function is_array;
 use function sprintf;
+use function str_ends_with;
+use function str_starts_with;
 
 /**
  * This is the default strategy used to build your manifest(s).
@@ -26,40 +26,66 @@ public function __construct(private ManifestFactory $factory)
     {
     }
 
-    public function build(ManifestOptions $options): ?string
+    public function getCallable(string $outputFormat, ?string $resourceFile): callable
     {
-        $factory = $this->factory;
+        if ('auto' == $outputFormat) {
+            if (null === $resourceFile) {
+                return [$this->factory, 'toConsole'];
+            }
+
+            $recognizedFilePatternsRules = [
+                'sbom.json' => [$this->factory, 'toSbomJson'],
+                'sbom.xml' => [$this->factory, 'toSbomXml'],
+                '.cdx.json' => [$this->factory, 'toSbomJson'],
+                '.cdx.xml' => [$this->factory, 'toSbomXml'],
+                'manifest.txt' => [$this->factory, 'toText'],
+                'plain.txt' => [$this->factory, 'toText'],
+                'ansi.txt' => [$this->factory, 'toHighlight'],
+                'console.txt' => [$this->factory, 'toConsole'],
+                'custom.bin' => [$this->factory, 'fromClass'],
+            ];
+
+            foreach ($recognizedFilePatternsRules as $extension => $callable) {
+                if (str_ends_with($resourceFile, $extension)) {
+                    return $callable;
+                }
+            }
+
+            throw new InvalidArgumentException(sprintf('Cannot auto-detect format for "%s" resource file', $resourceFile));
+        }
+
+        $recognizedOutputFormatRules = [
+            'console' => [$this->factory, 'toConsole'],
+            'ansi' => [$this->factory, 'toHighlight'],
+            'plain' => [$this->factory, 'toText'],
+            'sbom-json' => [$this->factory, 'toSbomJson'],
+            'sbom-xml' => [$this->factory, 'toSbomXml'],
+        ];
+
+        foreach ($recognizedOutputFormatRules as $format => $callable) {
+            if ($outputFormat === $format) {
+                return $callable;
+            }
+        }
 
+        if (!class_exists($outputFormat)) {
+            throw new InvalidArgumentException(sprintf('Format "%s" is not supported', $outputFormat));
+        }
+
+        return [$this->factory, 'fromClass'];
+    }
+
+    public function build(ManifestOptions $options): ?string
+    {
         /** @var string $rawFormat */
         $rawFormat = $options->getFormat(true);
-        $format = $options->getFormat();
-        $outputFile = $options->getOutputFile();
-        $sbomSpec = $options->getSbomSpec();
 
-        $output = $outputFile ? ManifestFile::tryFrom(basename($outputFile)) : null;
+        $callable = $this->getCallable($rawFormat, $options->getOutputFile());
 
-        return match ($format) {
-            ManifestFormat::auto => match ($output) {
-                null, ManifestFile::ansi => $factory->toHighlight(),
-                ManifestFile::consoleTable => $factory->toConsole(),
-                ManifestFile::txt => $factory->toText(),
-                ManifestFile::sbomXml => $factory->toSbom('xml', $sbomSpec),
-                ManifestFile::sbomJson => $factory->toSbom('json', $sbomSpec),
-                default => match (pathinfo($outputFile ? : '', PATHINFO_EXTENSION)) {
-                    'xml' => $factory->toSbom('xml', $sbomSpec),
-                    'json' => $factory->toSbom('json', $sbomSpec),
-                    '', 'txt' => $factory->toText(),
-                    default => throw new InvalidArgumentException('Cannot auto-detect format with such output file')
-                }
-            },
-            ManifestFormat::plain => $factory->toText(),
-            ManifestFormat::ansi => $factory->toHighlight(),
-            ManifestFormat::console => $factory->toConsole(),
-            ManifestFormat::sbomXml => $factory->toSbom('xml', $sbomSpec),
-            ManifestFormat::sbomJson => $factory->toSbom('json', $sbomSpec),
-            default => class_exists($rawFormat)
-                ? $factory->fromClass($rawFormat)
-                : throw new InvalidArgumentException(sprintf('Format "%s" is not supported', $rawFormat))
-        };
+        if (is_array($callable) && str_starts_with($callable[1], 'toSbom')) {
+            return $callable($options->getSbomSpec());
+        }
+
+        return $callable();
     }
 }
diff --git a/src/Helper/ManifestFile.php b/src/Helper/ManifestFile.php
index 0c65832..3707784 100644
--- a/src/Helper/ManifestFile.php
+++ b/src/Helper/ManifestFile.php
@@ -18,6 +18,7 @@ enum ManifestFile: string
     case custom = 'custom.bin';
     case ansi = 'ansi.txt';
     case txt = 'manifest.txt';
+    case plain = 'plain.txt';
     case xml = 'manifest.xml';
     case sbomXml = 'sbom.xml';
     case sbomJson = 'sbom.json';
diff --git a/tests/unit/DefaultStrategyTest.php b/tests/unit/DefaultStrategyTest.php
new file mode 100644
index 0000000..cf6097b
--- /dev/null
+++ b/tests/unit/DefaultStrategyTest.php
@@ -0,0 +1,97 @@
+<?php declare(strict_types=1);
+/**
+ * This file is part of the BoxManifest package.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Bartlett\BoxManifest\Tests;
+
+use Bartlett\BoxManifest\Composer\DefaultStrategy;
+use Bartlett\BoxManifest\Composer\ManifestFactory;
+
+use KevinGH\Box\Configuration\Configuration;
+
+use stdClass;
+use InvalidArgumentException;
+
+/**
+ * Unit tests for DefaultStrategy component of the Box Manifest
+ *
+ * @author Laurent Laville
+ * @since Release 4.0.0
+ */
+final class DefaultStrategyTest extends TestCase
+{
+    /**
+     * @dataProvider dpRecognizedFilePatterns
+     */
+    public function testRecognizedFilePatterns(string $outputFormat, ?string $resource, bool $expectedException): void
+    {
+        $this->testAutoDetection($outputFormat, $resource, $expectedException);
+    }
+
+    /**
+     * @dataProvider dpRecognizedOutputFormat
+     */
+    public function testRecognizedOutputFormat(string $outputFormat, ?string $resource, bool $expectedException): void
+    {
+        $this->testAutoDetection($outputFormat, $resource, $expectedException);
+    }
+
+    private function testAutoDetection(string $outputFormat, ?string $resource, bool $expectedException): void
+    {
+        if ($expectedException) {
+            $this->expectException(InvalidArgumentException::class);
+        }
+
+        $configFilePath = __DIR__ . '/../fixtures/phario-manifest-2.0.x-dev/box.json';
+
+        $raw = new stdClass();
+        $main = 'main';
+        $raw->{$main} = false;
+        $config = Configuration::create($configFilePath, $raw);
+
+        $factory = new ManifestFactory($config, true, '4.x-dev', '4.x-dev');
+        $strategy = new DefaultStrategy($factory);
+
+        $callable = $strategy->getCallable($outputFormat, $resource);
+        $this->assertIsCallable($callable);
+    }
+
+    public static function dpRecognizedFilePatterns(): iterable
+    {
+        yield ['auto', null, false];
+        yield ['auto', 'console.txt', false];
+        yield ['auto', 'plain.txt', false];
+        yield ['auto', 'manifest.txt', false];
+        yield ['auto', 'ansi.txt', false];
+        yield ['auto', 'sbom.json', false];
+        yield ['auto', 'sbom.xml', false];
+        yield ['auto', 'sbom.cdx.json', false];
+        yield ['auto', 'sbom.cdx.xml', false];
+        yield ['auto', 'custom.bin', false];
+        yield ['auto', 'custom.txt', true];
+    }
+
+    public static function dpRecognizedOutputFormat(): iterable
+    {
+        yield ['console', null, false];
+        yield ['console', 'whatever.you.want', false];
+
+        yield ['plain', null, false];
+        yield ['plain', 'whatever.you.want', false];
+
+        yield ['ansi', null, false];
+        yield ['ansi', 'whatever.you.want', false];
+
+        yield ['sbom-json', null, false];
+        yield ['sbom-json', 'whatever.you.want', false];
+
+        yield ['sbom-xml', null, false];
+        yield ['sbom-xml', 'whatever.you.want', false];
+
+        yield ['\My\Space\ClassNotFound', null, true];
+        yield ['\My\Space\ClassNotFound', 'whatever.you.want', true];
+    }
+}