Show previous exceptions during bootstrap

bin/rector.php

@@ -143,14 +143,20 @@ public function loadIfExistsAndNotLoadedYet(string $filePath): void
 
     // report fatal error in json format
     if ($outputFormat === JsonOutputFormatter::NAME) {
+        $errors = [];
+        do {
+            $errors[] = $throwable->getMessage();
+        } while ($throwable = $throwable->getPrevious());
         echo Json::encode([
-            'fatal_errors' => [$throwable->getMessage()],
+            'fatal_errors' => $errors,
         ]);
     } else {
         // report fatal errors in console format
         $symfonyStyleFactory = new SymfonyStyleFactory(new PrivatesAccessor());
         $symfonyStyle = $symfonyStyleFactory->create();
-        $symfonyStyle->error(str_replace("\r\n", "\n", $throwable->getMessage()));
+        do {
+            $symfonyStyle->error(str_replace("\r\n", "\n", $throwable->getMessage()));
+        } while ($throwable = $throwable->getPrevious());
     }
 
     exit(Command::FAILURE);

tests/Bin/RectorTest.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Tests\Bin;
+
+use Iterator;
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Process\Process;
+
+final class RectorTest extends TestCase
+{
+    /**
+     * @return Iterator<string, array{command: string, expectedOutput: string}>
+     */
+    public static function outputProvider(): Iterator
+    {
+        yield 'Version' => [
+            'command'        => PHP_BINARY . ' bin/rector --version',
+            'expectedOutput' => "Rector @package_version@" . PHP_EOL,
+        ];
+        yield 'Exception with previous console output' => [
+            'command'        => PHP_BINARY . ' bin/rector -c tests/Bin/config/incorrect-phpstan-files.php',
+            'expectedOutput' => PHP_EOL . " [ERROR] Rector\\NodeTypeResolver\\DependencyInjection\\PHPStanServicesFactory " . PHP_EOL . PHP_EOL . " [ERROR] Unexpected item 'parameters › invalidParameters'. " . PHP_EOL . PHP_EOL,
+        ];
+        yield 'Exception with previous console output in JSON format' => [
+            'command'        => PHP_BINARY . ' bin/rector -c tests/Bin/config/incorrect-phpstan-files.php --output-format json',
+            'expectedOutput' => '{"fatal_errors":["Rector\\\\NodeTypeResolver\\\\DependencyInjection\\\\PHPStanServicesFactory","Unexpected item \'parameters › invalidParameters\'."]}',
+        ];
+    }
+
+    #[DataProvider('outputProvider')]
+    public function testConsoleOutput(string $command, string $expectedOutput): void
+    {
+        $process = Process::fromShellCommandline($command);
+        $process->run();
+        $this->assertSame($expectedOutput, preg_replace("/ +/", " ", $process->getOutput()));
+    }
+}

tests/Bin/config/incorrect-phpstan-files.php

@@ -0,0 +1,10 @@
+<?php
+
+declare(strict_types=1);
+
+use Rector\Config\RectorConfig;
+
+return RectorConfig::configure()
+    ->withPhpSets()
+    ->withPaths([__DIR__])
+    ->withPHPStanConfigs([__DIR__ . '/phpstan.neon']);

tests/Bin/config/phpstan.neon

@@ -0,0 +1,3 @@
+
+parameters:
+    invalidParameters: true