Initial commit

step4-adding-the-blog-repository/tests/src/Functional/BlogPageTest.php

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+<?php
+
+namespace Drupal\my_module\Functional;
+
+use Drupal\Tests\BrowserTestBase;
+use Symfony\Component\HttpFoundation\Response;
+
+class BlogPageTest extends BrowserTestBase {
+
+  protected $defaultTheme = 'stark';
+
+  protected static $modules = [
+    'node',
+    'my_module',
+  ];
+
+  /** @test */
+  public function the_blog_page_loads_for_anonymous_users_and_contains_the_right_text() {
+    $this->drupalGet('/blog');
+
+    $session = $this->assertSession();
+
+    $session->statusCodeEquals(Response::HTTP_OK);
+    $session->responseContains('<h1>Blog</h1>');
+  }
+
+}

step4-adding-the-blog-repository/tests/src/Functional/MyModuleTest.php

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+<?php
+
+namespace Drupal\Tests\my_module\Functional;
+
+use Drupal\Tests\BrowserTestBase;
+use Symfony\Component\HttpFoundation\Response;
+
+class MyModuleTest extends BrowserTestBase {
+
+  protected $defaultTheme = 'stark';
+
+  /** @test */
+  public function the_front_page_loads_for_anonymous_users() {
+    $this->drupalGet('<front>');
+
+    $this->assertResponse(Response::HTTP_OK);
+  }
+
+}

step4-adding-the-blog-repository/tests/src/Kernel/ArticleRepositoryTest.php

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+<?php
+
+namespace Drupal\Tests\my_module\Kernel;
+
+use Drupal\Core\Datetime\DrupalDateTime;
+use Drupal\KernelTests\Core\Entity\EntityKernelTestBase;
+use Drupal\my_module\Repository\ArticleRepository;
+use Drupal\node\Entity\Node;
+use Drupal\Tests\node\Traits\NodeCreationTrait;
+
+class ArticleRepositoryTest extends EntityKernelTestBase {
+
+  use NodeCreationTrait;
+
+  public static $modules = [
+    'node',
+    'my_module',
+  ];
+
+  protected function setUp() {
+    parent::setUp();
+
+    $this->installSchema('node', ['node_access']);
+
+    $this->installConfig([
+      'filter',
+    ]);
+  }
+
+  /** @test */
+  public function nodes_that_are_not_articles_are_not_returned() {
+    $this->createNode(['type' => 'article'])->save();
+    $this->createNode(['type' => 'page'])->save();
+    $this->createNode(['type' => 'article'])->save();
+    $this->createNode(['type' => 'page'])->save();
+    $this->createNode(['type' => 'article'])->save();
+
+    $this->assertCount(5, Node::loadMultiple());
+
+    $repository = $this->container->get(ArticleRepository::class);
+    $articles = $repository->getAll();
+
+    $this->assertCount(3, $articles);
+  }
+
+  /** @test */
+  public function only_published_articles_are_returned() {
+    $this->createNode(['type' => 'article', 'status' => Node::PUBLISHED])->save();
+    $this->createNode(['type' => 'article', 'status' => Node::NOT_PUBLISHED])->save();
+    $this->createNode(['type' => 'article', 'status' => Node::PUBLISHED])->save();
+    $this->createNode(['type' => 'article', 'status' => Node::NOT_PUBLISHED])->save();
+    $this->createNode(['type' => 'article', 'status' => Node::PUBLISHED])->save();
+
+    $repository = $this->container->get(ArticleRepository::class);
+    $articles = $repository->getAll();
+
+    $this->assertCount(3, $articles);
+  }
+
+  /** @test */
+  public function nodes_are_ordered_by_date_and_returned_newest_first() {
+    $this->createNode(['type' => 'article', 'created' => (new DrupalDateTime('-2 days'))->getTimestamp()]);
+    $this->createNode(['type' => 'article', 'created' => (new DrupalDateTime('-1 week'))->getTimestamp()]);
+    $this->createNode(['type' => 'article', 'created' => (new DrupalDateTime('-1 hour'))->getTimestamp()]);
+    $this->createNode(['type' => 'article', 'created' => (new DrupalDateTime('-1 year'))->getTimestamp()]);
+    $this->createNode(['type' => 'article', 'created' => (new DrupalDateTime('-1 month'))->getTimestamp()]);
+
+    $repository = $this->container->get(ArticleRepository::class);
+    $nodes = $repository->getAll();
+    $nodeIds = array_keys($nodes);
+
+    $this->assertSame([3, 1, 2, 5, 4], $nodeIds);
+  }
+
+}