diff --git a/framework/core/tests/Api/Controller/ApiControllerTestCase.php b/framework/core/tests/Api/Controller/ApiControllerTestCase.php
index 61172d212..fa8695fb2 100644
--- a/framework/core/tests/Api/Controller/ApiControllerTestCase.php
+++ b/framework/core/tests/Api/Controller/ApiControllerTestCase.php
@@ -14,6 +14,7 @@ namespace Flarum\Tests\Api\Controller;
 use Flarum\Http\Controller\ControllerInterface;
 use Flarum\Tests\Test\TestCase;
 use Flarum\User\User;
+use Illuminate\Support\Arr;
 use Psr\Http\Message\ResponseInterface;
 
 abstract class ApiControllerTestCase extends TestCase
@@ -28,13 +29,17 @@ abstract class ApiControllerTestCase extends TestCase
      */
     protected $actor = null;
 
-    protected function callWith(array $body = []): ResponseInterface
+    protected function callWith(array $body = [], array $queryParams = []): ResponseInterface
     {
+        if (! Arr::get($body, 'data') && Arr::isAssoc($body)) {
+            $body = ['data' => ['attributes' => $body]];
+        }
+
         return $this->call(
             $this->controller,
             $this->actor,
-            [],
-            $body ? ['data' => ['attributes' => $body]] : []
+            $queryParams,
+            $body
         );
     }
 
diff --git a/framework/core/tests/Api/Controller/CreatePostControllerTest.php b/framework/core/tests/Api/Controller/CreatePostControllerTest.php
new file mode 100644
index 000000000..e0d30feb6
--- /dev/null
+++ b/framework/core/tests/Api/Controller/CreatePostControllerTest.php
@@ -0,0 +1,55 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Tests\Api\Controller;
+
+use Flarum\Api\Controller\CreatePostController;
+use Flarum\Discussion\Discussion;
+use Flarum\Tests\Test\Concerns\RetrievesAuthorizedUsers;
+use Illuminate\Support\Arr;
+
+class CreatePostControllerTest extends ApiControllerTestCase
+{
+    use RetrievesAuthorizedUsers;
+
+    protected $controller = CreatePostController::class;
+
+    protected $data = [
+        'content' => 'reply with predetermined content for automated testing - too-obscure'
+    ];
+
+    /**
+     * @var Discussion
+     */
+    protected $discussion;
+
+    protected function init()
+    {
+        $this->actor = $this->getNormalUser();
+        $this->discussion = Discussion::start(__CLASS__, $this->actor);
+
+        $this->discussion->save();
+    }
+
+    /**
+     * @test
+     */
+    public function can_create_reply()
+    {
+        $body = [];
+        Arr::set($body, 'data.attributes', $this->data);
+        Arr::set($body, 'data.relationships.discussion.data.id', $this->discussion->id);
+
+        $response = $this->callWith($body);
+
+        $this->assertEquals(201, $response->getStatusCode());
+    }
+}
diff --git a/framework/core/tests/Api/Controller/DeleteDiscussionControllerTest.php b/framework/core/tests/Api/Controller/DeleteDiscussionControllerTest.php
new file mode 100644
index 000000000..e4c68dde6
--- /dev/null
+++ b/framework/core/tests/Api/Controller/DeleteDiscussionControllerTest.php
@@ -0,0 +1,43 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Tests\Api\Controller;
+
+use Flarum\Api\Controller\DeleteDiscussionController;
+use Flarum\Discussion\Discussion;
+use Flarum\Tests\Test\Concerns\RetrievesAuthorizedUsers;
+
+class DeleteDiscussionControllerTest extends ApiControllerTestCase
+{
+    use RetrievesAuthorizedUsers;
+
+    protected $controller = DeleteDiscussionController::class;
+    protected $discussion;
+
+    protected function init()
+    {
+        $this->discussion = Discussion::start(__CLASS__, $this->getNormalUser());
+
+        $this->discussion->save();
+    }
+
+    /**
+     * @test
+     */
+    public function admin_can_delete()
+    {
+        $this->actor = $this->getAdminUser();
+
+        $response = $this->callWith([], ['id' => $this->discussion->id]);
+
+        $this->assertEquals(204, $response->getStatusCode());
+    }
+}
diff --git a/framework/core/tests/Api/Controller/ListDiscussionControllerTest.php b/framework/core/tests/Api/Controller/ListDiscussionControllerTest.php
new file mode 100644
index 000000000..695b378c2
--- /dev/null
+++ b/framework/core/tests/Api/Controller/ListDiscussionControllerTest.php
@@ -0,0 +1,33 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Tests\Api\Controller;
+
+use Flarum\Api\Controller\ListDiscussionsController;
+use Flarum\Discussion\Discussion;
+
+class ListDiscussionControllerTest extends ApiControllerTestCase
+{
+    protected $controller = ListDiscussionsController::class;
+
+    /**
+     * @test
+     */
+    public function shows_index_for_guest()
+    {
+        $response = $this->callWith();
+
+        $this->assertEquals(200, $response->getStatusCode());
+        $data = json_decode($response->getBody()->getContents(), true);
+
+        $this->assertEquals(Discussion::count(), count($data['data']));
+    }
+}
diff --git a/framework/core/tests/Test/Concerns/RetrievesAuthorizedUsers.php b/framework/core/tests/Test/Concerns/RetrievesAuthorizedUsers.php
index ca4bf581c..c11e9c911 100644
--- a/framework/core/tests/Test/Concerns/RetrievesAuthorizedUsers.php
+++ b/framework/core/tests/Test/Concerns/RetrievesAuthorizedUsers.php
@@ -28,7 +28,7 @@ trait RetrievesAuthorizedUsers
 
     public function getNormalUser()
     {
-        User::unguarded(function () {
+        return User::unguarded(function () {
             return User::firstOrCreate([
                 'username' => $this->userAttributes['username']
             ], $this->userAttributes);