Adding a fail() command to tests, fixing command testing for failed commands

CHANGELOG.md

@@ -10,6 +10,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - Added a `Option` support class and `option()` helper to retrieve options in a type-safe manner.
+- Added `fail()` method to commands to allow for a command to fail with a message.
+
+### Fixed
+
+- Fixed command testing to proper handle failed commands.
 
 ## v1.5.4 - 2025-03-06
 

src/mantle/console/class-command.php

@@ -14,6 +14,7 @@
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\ConsoleOutput;
 use Symfony\Component\Console\Output\OutputInterface;
+use Throwable;
 
 /**
  * CLI Command for Service Providers
@@ -186,8 +187,28 @@ public function set_container( \Mantle\Contracts\Application $container ): void
 	}
 
 	/**
-	 * Retrieve the application container.     */
+	 * Retrieve the application container.
+	 */
 	public function get_container(): \Mantle\Contracts\Application {
 		return $this->container;
 	}
+
+	/**
+	 * Fail the command.
+	 *
+	 * @param Throwable|string|null $exception Exception to throw.
+	 *
+	 * @throws Manually_Failed_Exception|Throwable Thrown exception.
+	 */
+	public function fail( Throwable|string|null $exception = null ): void {
+		if ( is_null( $exception ) ) {
+			$exception = 'Command manually failed.';
+		}
+
+		if ( is_string( $exception ) ) {
+			$exception = new Manually_Failed_Exception( $exception );
+		}
+
+		throw $exception;
+	}
 }

src/mantle/console/class-manually-failed-exception.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * Manually_Failed_Exception class file
+ *
+ * @package Mantle
+ */
+
+namespace Mantle\Console;
+
+use RuntimeException;
+
+/**
+ * Manually Failed Command Exception
+ */
+class Manually_Failed_Exception extends RuntimeException {}

src/mantle/testing/class-test-command.php

@@ -16,6 +16,8 @@
 use Symfony\Component\Console\Tester\CommandTester;
 use PHPUnit\Framework\Assert;
 use Symfony\Component\Console\Exception\CommandNotFoundException;
+use Symfony\Component\Console\Exception\ExceptionInterface;
+use Throwable;
 
 /**
  * Faux "PendingCommand" class for unit testing.
@@ -28,6 +30,11 @@ class Test_Command {
 	 */
 	protected CommandTester $tester;
 
+	/**
+	 * Exception thrown during command execution.
+	 */
+	protected Throwable $exception;
+
 	/**
 	 * Flag if the command has been executed.
 	 */
@@ -139,6 +146,10 @@ public function dd(): never {
 			$this->run();
 		}
 
+		if ( isset( $this->exception ) ) {
+			dd( $this->exception );
+		}
+
 		dd( $this->tester->getDisplay() );
 	}
 
@@ -179,7 +190,7 @@ protected function verify_command(): void {
 	}
 
 	/**
-	 * Run the command.
+	 * Run the command and verify the expectations.
 	 */
 	public function run(): static {
 		$this->has_executed = true;
@@ -188,8 +199,8 @@ public function run(): static {
 			$this->tester = $this->app->make(
 				\Mantle\Framework\Console\Kernel::class
 			)->test( $this->command, $this->arguments );
-		} catch ( CommandNotFoundException ) {
-			$this->test->fail( "Command [{$this->command}] not found." );
+		} catch ( Throwable $e ) {
+			$this->exception = $e;
 		}
 
 		$this->verify_expectations();
@@ -203,7 +214,7 @@ public function run(): static {
 	protected function verify_expectations(): void {
 		// Assert that the exit code matches the expected exit code.
 		if ( null !== $this->expected_exit_code ) {
-			$exit_code = $this->tester->getStatusCode();
+			$exit_code = $this->get_status_code();
 
 			$this->test->assertEquals(
 				$this->expected_exit_code,
@@ -213,29 +224,20 @@ protected function verify_expectations(): void {
 		}
 
 		if ( ! empty( $this->expected_output ) ) {
-			$output = $this->tester->getDisplay();
+			$output = $this->get_output();
 
 			foreach ( $this->expected_output as $expected_output ) {
 				$this->test->assertStringContainsString( $expected_output, $output );
 			}
 		}
 
 		if ( ! empty( $this->unexpected_output ) ) {
-			$output = $this->tester->getDisplay();
+			$output = $this->get_output();
 
 			foreach ( $this->unexpected_output as $unexpected_output ) {
 				$this->test->assertStringNotContainsString( $unexpected_output, $output );
 			}
 		}
-
-		// todo: add output substring assertions.
-		// if ( ! empty( $this->expected_output_substrings ) ) {
-		//  $output = $this->tester->getDisplay();
-
-		//  foreach ( $this->expected_output_substrings as $expected_output_substring ) {
-		//      $this->test->assertStringContainsString( $expected_output_substring, $output );
-		//  }
-		// }
 	}
 
 	/**
@@ -246,4 +248,26 @@ public function __destruct() {
 			$this->run();
 		}
 	}
+
+	/**
+	 * Retrieve the output of the command.
+	 */
+	public function get_output(): string {
+		return match ( true ) {
+			isset( $this->exception ) => $this->exception->getMessage(),
+			isset( $this->tester ) => $this->tester->getDisplay(),
+			default => '',
+		};
+	}
+
+	/**
+	 * Retrieve the status code of the command.
+	 */
+	public function get_status_code(): int {
+		return match ( true ) {
+			isset( $this->exception ) => Command::FAILURE,
+			isset( $this->tester ) => $this->tester->getStatusCode(),
+			default => Command::FAILURE,
+		};
+	}
 }

tests/Testing/Concerns/InteractsWithConsoleTest.php

@@ -29,6 +29,20 @@ public function test_list_command() {
 			->assertOk();
 	}
 
+	public function test_command_failure(): void {
+		Console::command( 'fail', fn () => $this->fail() );
+
+		$this->command( 'wp mantle fail' )
+			->assertOutputContains( 'Command manually failed' )
+			->assertFailed();
+
+		Console::command( 'fail:message', fn () => $this->fail( 'With message' ) );
+
+		$this->command( 'wp mantle fail:message' )
+			->assertOutputContains( 'With message' )
+			->assertFailed();
+	}
+
 	public function test_closure_command() {
 		Console::command( 'hello-world', fn () => $this->info( 'Hello World' ) )
 			->describe( 'Command description' );