Allow for custom default command execution without arguments (#109)

* Allow for custom default command execution without arguments

* Add a test for default command execution

* Fix testDefaultCommand command1 action indentation

Author: kodie

src/Application.php

@@ -308,7 +308,7 @@ public function onException(callable $fn): self
      */
     public function handle(array $argv): mixed
     {
-        if (count($argv) < 2) {
+        if ($this->default === '__default__' && count($argv) < 2) {
             return $this->showHelp();
         }
 

tests/ApplicationTest.php

@@ -312,13 +312,21 @@ public function testDefaultCommand()
         $app = $this->newApp('test');
 
         // Add some sample commands to the application
-        $app->command('command1');
+        $app->command('command1')->action(function () {
+            echo 'This should be the default command';
+        });
         $app->command('command2');
 
         // Test setting a valid default command
         $app->defaultCommand('command1');
         $this->assertEquals('command1', $app->getDefaultCommand());
 
+        // Test executing a default command
+        ob_start();
+        $app->handle(['test']);
+        $buffer = ob_get_clean();
+        $this->assertSame('This should be the default command', $buffer);
+
         // Test setting an invalid default command
         $this->expectException(InvalidArgumentException::class);
         $app->defaultCommand('invalid_command');