added CLI tests

tests/codeception/_support/CliTester.php

+<?php
+
+
+/**
+ * Inherited Methods
+ * @method void wantToTest($text)
+ * @method void wantTo($text)
+ * @method void execute($callable)
+ * @method void expectTo($prediction)
+ * @method void expect($prediction)
+ * @method void amGoingTo($argumentation)
+ * @method void am($role)
+ * @method void lookForwardTo($achieveValue)
+ * @method void comment($description)
+ * @method \Codeception\Lib\Friend haveFriend($name, $actorClass = NULL)
+ *
+ * @SuppressWarnings(PHPMD)
+*/
+class CliTester extends \Codeception\Actor
+{
+    use _generated\CliTesterActions;
+
+   /**
+    * Define custom actions here
+    */
+}

tests/codeception/cli.suite.yml

+# Codeception Test Suite Configuration
+
+# suite for acceptance tests.
+# perform tests in browser using the WebDriver or PhpBrowser.
+# If you need both WebDriver and PHPBrowser tests - create a separate suite.
+
+class_name: CliTester
+modules:
+    enabled:
+        - Filesystem
+        - Cli

tests/codeception/cli/GiiCept.php

+<?php
+
+// @group mandatory
+
+$I = new CliTester($scenario);
+
+$I->runShellCommand("/app/yii help gii");
+$I->seeInShellOutput('DESCRIPTION');
+$I->seeInShellOutput('SUB-COMMANDS');
+$I->seeInShellOutput('gii/');
+
+$I->runShellCommand("/app/yii help gii/giiant-crud");
+$I->seeInShellOutput('DESCRIPTION');
+$I->seeInShellOutput('yii gii/giiant-crud');

tests/codeception/cli/YiiCept.php

+<?php
+
+// @group mandatory
+
+$I = new CliTester($scenario);
+
+$I->runShellCommand('/app/yii');
+$I->seeInShellOutput('This is Yii version 2.0.');

tests/codeception/cli/_bootstrap.php

+<?php
+
+// add cli testing specific bootstrap code here