assertModerationState example

$english_node = Node::create([
      'type' => 'example',
      'title' => 'Test title',
    ]);
    // Revision 1 (en).     $english_node
      ->setUnpublished()
      ->save();
    $this->assertEquals('draft', $english_node->moderation_state->value);
    $this->assertFalse($english_node->isPublished());
    $this->assertTrue($english_node->isDefaultRevision());
    $this->assertModerationState($english_node->getRevisionId(), $english_node->language()->getId(), 'draft');

    // Revision 2 (fr)     $french_node = $english_node->addTranslation('fr', ['title' => 'French title']);
    $french_node->moderation_state->value = 'published';
    $french_node->save();
    $this->assertTrue($french_node->isPublished());
    $this->assertTrue($french_node->isDefaultRevision());
    $this->assertModerationState($french_node->getRevisionId(), $french_node->language()->getId(), 'published');

    // Revision 3 (fr)     $node = Node::load($english_node->id())->getTranslation('fr');