diff --git a/.github/workflows/flarum-sticky-backend.yml b/.github/workflows/flarum-sticky-backend.yml
index 3ec5a6dca..d86994abc 100644
--- a/.github/workflows/flarum-sticky-backend.yml
+++ b/.github/workflows/flarum-sticky-backend.yml
@@ -6,6 +6,6 @@ jobs:
   run:
     uses: ./.github/workflows/REUSABLE_backend.yml
     with:
-      enable_backend_testing: false
+      enable_backend_testing: true
 
       backend_directory: ./extensions/sticky
diff --git a/extensions/sticky/composer.json b/extensions/sticky/composer.json
index 6cadf3947..0bf7ae319 100644
--- a/extensions/sticky/composer.json
+++ b/extensions/sticky/composer.json
@@ -51,7 +51,7 @@
                 "prettier": true,
                 "typescript": false,
                 "bundlewatch": false,
-                "backendTesting": false,
+                "backendTesting": true,
                 "editorConfig": true,
                 "styleci": true
             }
@@ -64,5 +64,29 @@
         }
     ],
     "minimum-stability": "dev",
-    "prefer-stable": true
+    "prefer-stable": true,
+    "autoload-dev": {
+        "psr-4": {
+            "Flarum\\Sticky\\Tests\\": "tests/"
+        }
+    },
+    "scripts": {
+        "test": [
+            "@test:unit",
+            "@test:integration"
+        ],
+        "test:unit": "phpunit -c tests/phpunit.unit.xml",
+        "test:integration": "phpunit -c tests/phpunit.integration.xml",
+        "test:setup": "@php tests/integration/setup.php"
+    },
+    "scripts-descriptions": {
+        "test": "Runs all tests.",
+        "test:unit": "Runs all unit tests.",
+        "test:integration": "Runs all integration tests.",
+        "test:setup": "Sets up a database for use with integration tests. Execute this only once."
+    },
+    "require-dev": {
+        "flarum/tags": "*@dev",
+        "flarum/testing": "^1.0.0"
+    }
 }
diff --git a/extensions/sticky/tests/fixtures/.gitkeep b/extensions/sticky/tests/fixtures/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/extensions/sticky/tests/integration/api/ListDiscussionsTest.php b/extensions/sticky/tests/integration/api/ListDiscussionsTest.php
new file mode 100644
index 000000000..3f595acbb
--- /dev/null
+++ b/extensions/sticky/tests/integration/api/ListDiscussionsTest.php
@@ -0,0 +1,120 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * For detailed copyright and license information, please view the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Flarum\Sticky\tests\integration\api;
+
+use Carbon\Carbon;
+use Flarum\Testing\integration\RetrievesAuthorizedUsers;
+use Flarum\Testing\integration\TestCase;
+use Illuminate\Support\Arr;
+
+class ListDiscussionsTest extends TestCase
+{
+    use RetrievesAuthorizedUsers;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->extension('flarum-tags', 'flarum-sticky');
+
+        $this->prepareDatabase([
+            'users' => [
+                ['id' => 1, 'username' => 'Muralf', 'email' => 'muralf@machine.local', 'is_email_confirmed' => 1],
+                $this->normalUser(),
+                ['id' => 3, 'username' => 'Muralf_', 'email' => 'muralf_@machine.local', 'is_email_confirmed' => 1],
+            ],
+            'discussions' => [
+                ['id' => 1, 'title' => __CLASS__, 'created_at' => Carbon::now(), 'last_posted_at' => Carbon::now(), 'user_id' => 1, 'first_post_id' => 1, 'comment_count' => 1, 'is_sticky' => true, 'last_post_number' => 1],
+                ['id' => 2, 'title' => __CLASS__, 'created_at' => Carbon::now()->addMinutes(2), 'last_posted_at' => Carbon::now()->addMinutes(5), 'user_id' => 1, 'first_post_id' => 1, 'comment_count' => 1, 'is_sticky' => false, 'last_post_number' => 1],
+                ['id' => 3, 'title' => __CLASS__, 'created_at' => Carbon::now()->addMinutes(3), 'last_posted_at' => Carbon::now()->addMinute(), 'user_id' => 1, 'first_post_id' => 1, 'comment_count' => 1, 'is_sticky' => true, 'last_post_number' => 1],
+                ['id' => 4, 'title' => __CLASS__, 'created_at' => Carbon::now()->addMinutes(4), 'last_posted_at' => Carbon::now()->addMinutes(2), 'user_id' => 1, 'first_post_id' => 1, 'comment_count' => 1, 'is_sticky' => false, 'last_post_number' => 1],
+            ],
+            'discussion_user' => [
+                ['discussion_id' => 1, 'user_id' => 3, 'last_read_post_number' => 1],
+                ['discussion_id' => 3, 'user_id' => 3, 'last_read_post_number' => 1],
+            ],
+            'tags' => [
+                ['id' => 1, 'slug' => 'general', 'position' => 0, 'parent_id' => null]
+            ],
+            'discussion_tag' => [
+                ['discussion_id' => 1, 'tag_id' => 1],
+                ['discussion_id' => 2, 'tag_id' => 1],
+                ['discussion_id' => 3, 'tag_id' => 1],
+                ['discussion_id' => 4, 'tag_id' => 1],
+            ]
+        ]);
+    }
+
+    /** @test */
+    public function list_discussions_shows_sticky_first_as_guest()
+    {
+        $response = $this->send(
+            $this->request('GET', '/api/discussions')
+        );
+
+        $this->assertEquals(200, $response->getStatusCode());
+
+        $data = json_decode($response->getBody()->getContents(), true);
+
+        $this->assertEquals([3, 1, 2, 4], Arr::pluck($data['data'], 'id'));
+    }
+
+    /** @test */
+    public function list_discussions_shows_sticky_unread_first_as_user()
+    {
+        $response = $this->send(
+            $this->request('GET', '/api/discussions', [
+                'authenticatedAs' => 2
+            ])
+        );
+
+        $this->assertEquals(200, $response->getStatusCode());
+
+        $data = json_decode($response->getBody()->getContents(), true);
+
+        $this->assertEquals([3, 1, 2, 4], Arr::pluck($data['data'], 'id'));
+    }
+
+    /** @test */
+    public function list_discussions_shows_normal_order_when_all_read_as_user()
+    {
+        $response = $this->send(
+            $this->request('GET', '/api/discussions', [
+                'authenticatedAs' => 3
+            ])
+        );
+
+        $this->assertEquals(200, $response->getStatusCode());
+
+        $data = json_decode($response->getBody()->getContents(), true);
+
+        $this->assertEquals([2, 4, 3, 1], Arr::pluck($data['data'], 'id'));
+    }
+
+    /** @test */
+    public function list_discussions_shows_stick_first_on_a_tag()
+    {
+        $response = $this->send(
+            $this->request('GET', '/api/discussions', [
+                'authenticatedAs' => 3
+            ])->withQueryParams([
+                'filter' => [
+                    'tag' => 'general'
+                ]
+            ])
+        );
+
+        $this->assertEquals(200, $response->getStatusCode());
+
+        $data = json_decode($response->getBody()->getContents(), true);
+
+        $this->assertEquals([3, 1, 2, 4], Arr::pluck($data['data'], 'id'));
+    }
+}
diff --git a/extensions/sticky/tests/integration/setup.php b/extensions/sticky/tests/integration/setup.php
new file mode 100644
index 000000000..67039c083
--- /dev/null
+++ b/extensions/sticky/tests/integration/setup.php
@@ -0,0 +1,16 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * For detailed copyright and license information, please view the
+ * LICENSE file that was distributed with this source code.
+ */
+
+use Flarum\Testing\integration\Setup\SetupScript;
+
+require __DIR__.'/../../vendor/autoload.php';
+
+$setup = new SetupScript();
+
+$setup->run();
diff --git a/extensions/sticky/tests/phpunit.integration.xml b/extensions/sticky/tests/phpunit.integration.xml
new file mode 100644
index 000000000..90fbbff37
--- /dev/null
+++ b/extensions/sticky/tests/phpunit.integration.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd"
+    backupGlobals="false"
+    backupStaticAttributes="false"
+    colors="true"
+    convertErrorsToExceptions="true"
+    convertNoticesToExceptions="true"
+    convertWarningsToExceptions="true"
+    processIsolation="true"
+    stopOnFailure="false"
+>
+    <coverage processUncoveredFiles="true">
+        <include>
+            <directory suffix=".php">../src/</directory>
+        </include>
+    </coverage>
+    <testsuites>
+        <testsuite name="Flarum Integration Tests">
+            <directory suffix="Test.php">./integration</directory>
+             <exclude>./integration/tmp</exclude>
+        </testsuite>
+    </testsuites>
+</phpunit>
diff --git a/extensions/sticky/tests/phpunit.unit.xml b/extensions/sticky/tests/phpunit.unit.xml
new file mode 100644
index 000000000..d3a4a3e3d
--- /dev/null
+++ b/extensions/sticky/tests/phpunit.unit.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd"
+    backupGlobals="false"
+    backupStaticAttributes="false"
+    colors="true"
+    convertErrorsToExceptions="true"
+    convertNoticesToExceptions="true"
+    convertWarningsToExceptions="true"
+    processIsolation="false"
+    stopOnFailure="false"
+>
+    <coverage processUncoveredFiles="true">
+        <include>
+            <directory suffix=".php">../src/</directory>
+        </include>
+    </coverage>
+    <testsuites>
+        <testsuite name="Flarum Unit Tests">
+            <directory suffix="Test.php">./unit</directory>
+        </testsuite>
+    </testsuites>
+    <listeners>
+        <listener class="\Mockery\Adapter\Phpunit\TestListener" />
+    </listeners>
+</phpunit>
diff --git a/extensions/sticky/tests/unit/.gitkeep b/extensions/sticky/tests/unit/.gitkeep
new file mode 100644
index 000000000..e69de29bb