some update, will add testing methods

src/Base/AbstractApplication.php

@@ -140,7 +140,7 @@ public function run($exit = true)
             $returnCode = $this->dispatch($command);
         } catch (\Throwable $e) {
             self::fire(self::ON_RUN_ERROR, [$e, $this]);
-            $returnCode = $e->getCode() === 0 ? __LINE__ : $e->getCode();
+            $returnCode = $e->getCode() === 0 ? $e->getLine() : $e->getCode();
             $this->handleException($e);
         }
 
@@ -231,7 +231,7 @@ public function handleException($e)
     <danger>$title</danger>
 
 Message   <magenta>%s</magenta>
-At File      <cyan>%s</cyan> line <cyan>%d</cyan>
+At File   <cyan>%s</cyan> line <cyan>%d</cyan>
 Catch by  %s()\n
 Code Trace:\n%s\n
 ERR;

src/Controller.php

@@ -16,7 +16,7 @@
 use Inhere\Console\Utils\Annotation;
 
 /**
- * Class Command
+ * Class Controller
  * @package Inhere\Console
  */
 abstract class Controller extends AbstractCommand implements ControllerInterface
@@ -88,7 +88,7 @@ protected function execute($input, $output)
         } else {
             $group = static::getName();
             $status = -1;
-            $this->output->liteError("Sorry, The command '$action' not exist of the group '{$group}'!");
+            $output->liteError("Sorry, The command '$action' not exist of the group '{$group}'!");
 
             // find similar command names by similar_text()
             $similar = [];
@@ -102,7 +102,7 @@ protected function execute($input, $output)
             }
 
             if ($similar) {
-                $this->write(sprintf('Maybe what you mean is: <info>%s</info>', implode(', ', $similar)));
+                $output->liteWarning(sprintf("Maybe what you mean is:\n\t  <info>%s</info>", implode(', ', $similar)));
             } else {
                 $this->showCommandList();
             }

src/IO/Output.php

@@ -40,6 +40,19 @@ class Output implements OutputInterface
      */
     protected $style;
 
+    /**
+     * Output constructor.
+     * @param null|resource $outputStream
+     */
+    public function __construct($outputStream = null)
+    {
+        if ($outputStream) {
+            $this->outputStream = $outputStream;
+        }
+
+        $this->getStyle();
+    }
+
 /////////////////////////////////////////////////////////////////
 /// Output Message
 /////////////////////////////////////////////////////////////////

tests/ApplicationTest.php

@@ -0,0 +1,12 @@
+<?php
+
+use PHPUnit\Framework\TestCase;
+use Inhere\Console\Application;
+
+/**
+ * @covers Application
+ */
+class ApplicationTest extends TestCase
+{
+
+}

tests/CommandTest.php

@@ -0,0 +1,12 @@
+<?php
+
+use PHPUnit\Framework\TestCase;
+use Inhere\Console\Command;
+
+/**
+ * @covers Command
+ */
+class CommandTest extends TestCase
+{
+
+}

tests/ControllerTest.php

@@ -0,0 +1,12 @@
+<?php
+
+use PHPUnit\Framework\TestCase;
+use Inhere\Console\Controller;
+
+/**
+ * @covers Controller
+ */
+class ControllerTest extends TestCase
+{
+
+}

tests/bootstap.php

@@ -0,0 +1,6 @@
+<?php
+/**
+ * phpunit6.phar --bootstrap tests/bootstap.php tests
+ */
+
+require dirname(__DIR__) . '/examples/s-autoload.php';

tests/test.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+# phpunit6.phar --colors --coverage-html ./coverage/
+phpunit6.phar --colors --bootstrap tests/bootstap.php tests