docs: DrupalCon updates

test-driven-drupal/code/3.txt

@@ -0,0 +1,41 @@
+// tests/src/Functional/BlogPageTest.php
+
+/** @test */
+public function it_loads_the_blog_page(): void {
+  $this->drupalGet('/blog');
+
+  $this->assertSession()->statusCodeEquals(200);
+}
+// end test
+
+// start output
+E                                                                   1 / 1 (100%)
+
+Time: 00:01.379, Memory: 6.00 MB
+
+There was 1 error:
+
+1) Drupal\Tests\drupalcon\Functional\BlogPageTest::it_loads_the_blog_page
+Behat\Mink\Exception\ExpectationException:
+Current response status code is 404, but 200 expected.
+
+/app/vendor/behat/mink/src/WebAssert.php:794
+/app/vendor/behat/mink/src/WebAssert.php:130
+/app/web/modules/custom/drupalcon/tests/src/BlogPageTest.php:16
+/app/vendor/phpunit/phpunit/src/Framework/TestResult.php:728
+
+ERRORS!
+Tests: 1, Assertions: 2, Errors: 1.
+// end output
+
+// start routing
+# drupalcon.routing.yml
+
+blog.page:
+ path: /blog
+ defaults:
+   _controller: Drupal\drupalcon\Controller\BlogPageController
+   _title: Blog
+ requirements:
+   _permission: access content
+// end routing