initial

Command/TestCommand.php

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+<?php
+namespace Test\Test\Command;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class TestCommand extends Command{
+
+    private $_state;
+    private $_objectManager;
+    private $_productRepository;
+    private $_productAction;
+
+    public function __construct(
+        \Magento\Catalog\Model\ProductRepository $productRepository,
+        \Magento\Framework\ObjectManagerInterface $objectManager,
+        \Magento\Framework\App\State $state,
+        \Magento\Catalog\Model\ResourceModel\Product\Action $productAction
+    ) {
+        $this->_state=$state;
+        $this->_objectManager=$objectManager;
+        $this->_productRepository=$productRepository;
+        $this->_productAction=$productAction;
+
+        parent::__construct();
+    }
+
+    protected function configure(){
+        $this->setName('test:test')
+            ->setDescription('Test')
+        ;
+        parent::configure();
+    }
+
+    /**
+    * {@inheritdoc}
+    */
+    protected function execute(InputInterface $input, OutputInterface $output){
+        $output->writeln(get_class($this->_productAction));
+    }
+}

etc/di.xml

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+<?xml version="1.0"?>
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
+    <type name="Magento\Framework\Console\CommandList">
+        <arguments>
+            <argument name="commands" xsi:type="array">
+                <item name="test_test_test_command" xsi:type="object">Test\Test\Command\TestCommand</item>
+            </argument>
+        </arguments>
+    </type>
+</config>
+

etc/module.xml

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+<?xml version="1.0"?>
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framework/Module/etc/module.xsd">
+    <module name="Test_Test" setup_version="0.0.0"/>
+</config>
+

registration.php

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+<?php
+
+\Magento\Framework\Component\ComponentRegistrar::register(
+    \Magento\Framework\Component\ComponentRegistrar::MODULE,
+    'Test_Test',
+    __DIR__
+);