diff --git a/tests/Feature/Membership/IndexTest.php b/tests/Feature/Membership/IndexTest.php
index 11c6a40b..292d6ca1 100644
--- a/tests/Feature/Membership/IndexTest.php
+++ b/tests/Feature/Membership/IndexTest.php
@@ -3,67 +3,94 @@
 namespace Tests\Feature\Membership;
 
 use App\Group;
+use App\Lib\Data\DateData;
+use App\Member\Data\ActivityData;
+use App\Member\Data\GroupData;
+use App\Member\Data\MembershipData;
+use App\Member\Data\SubactivityData;
 use App\Member\Member;
 use App\Member\Membership;
-use Generator;
 use Carbon\Carbon;
 use Illuminate\Foundation\Testing\DatabaseTransactions;
-use PHPUnit\Framework\Attributes\DataProvider;
-use Tests\TestCase;
 
-class IndexTest extends TestCase
-{
+covers(MembershipData::class);
+covers(DateData::class);
+covers(GroupData::class);
+covers(ActivityData::class);
+covers(SubactivityData::class);
+uses(DatabaseTransactions::class);
 
-    use DatabaseTransactions;
+it('testItShowsActivityAndSubactivityNamesOfMember', function () {
+    $this->withoutExceptionHandling()->login()->loginNami();
+    $group = Group::factory()->create(['name' => 'aaaaaaaa']);
+    $member = Member::factory()
+        ->defaults()
+        ->for($group)
+        ->has(Membership::factory()->for($group)->in('€ Mitglied', 122, 'Wölfling', 234)->from('2022-11-02')->promise(now()))
+        ->create();
+    $membership = $member->memberships->first();
 
-    public function testItShowsActivityAndSubactivityNamesOfMember(): void
-    {
-        $this->withoutExceptionHandling()->login()->loginNami();
-        $group = Group::factory()->create(['name' => 'aaaaaaaa']);
-        $member = Member::factory()
-            ->defaults()
-            ->for($group)
-            ->has(Membership::factory()->for($group)->in('€ Mitglied', 122, 'Wölfling', 234)->from('2022-11-02'))
-            ->create();
-        $membership = $member->memberships->first();
+    $this->get("/member/{$member->id}/membership")
+        ->assertJsonPath('data.0.activity.id', $membership->activity_id)
+        ->assertJsonPath('data.0.subactivity.id', $membership->subactivity_id)
+        ->assertJsonPath('data.0.activity.name', '€ Mitglied')
+        ->assertJsonPath('data.0.subactivity.name', 'Wölfling')
+        ->assertJsonPath('data.0.from.human', '02.11.2022')
+        ->assertJsonPath('data.0.from.raw', '2022-11-02')
+        ->assertJsonPath('data.0.promised_at.raw', now()->format('Y-m-d'))
+        ->assertJsonPath('data.0.promised_at.human', now()->format('d.m.Y'))
+        ->assertJsonPath('data.0.group.id', $group->id)
+        ->assertJsonPath('data.0.id', $membership->id)
+        ->assertJsonPath('data.0.links.update', route('membership.update', ['membership' => $membership]))
+        ->assertJsonPath('data.0.links.destroy', route('membership.destroy', ['membership' => $membership]));
+});
 
-        $this->get("/member/{$member->id}/membership")
-            ->assertJsonPath('data.0.activity.id', $membership->activity_id)
-            ->assertJsonPath('data.0.subactivity.id', $membership->subactivity_id)
-            ->assertJsonPath('data.0.activity.name', '€ Mitglied')
-            ->assertJsonPath('data.0.subactivity.name', 'Wölfling')
-            ->assertJsonPath('data.0.from.human', '02.11.2022')
-            ->assertJsonPath('data.0.from.raw', '2022-11-02')
-            ->assertJsonPath('data.0.group.id', $group->id)
-            ->assertJsonPath('data.0.id', $membership->id)
-            ->assertJsonPath('data.0.links.update', route('membership.update', ['membership' => $membership]))
-            ->assertJsonPath('data.0.links.destroy', route('membership.destroy', ['membership' => $membership]))
-            ->assertJsonPath('meta.default.activity_id', null)
-            ->assertJsonPath('meta.default.group_id', $group->id)
-            ->assertJsonPath('meta.groups.0.id', $group->id)
-            ->assertJsonPath('meta.activities.0.id', $membership->activity_id)
-            ->assertJsonPath("meta.subactivities.{$membership->activity_id}.0.id", $membership->subactivity_id)
-            ->assertJsonPath("meta.subactivities.{$membership->activity_id}.0.is_age_group", true)
-            ->assertJsonPath('meta.links.store', route('member.membership.store', ['member' => $member]));
-    }
+it('returns meta', function () {
+    $this->withoutExceptionHandling()->login()->loginNami();
+    $group = Group::factory()->create(['name' => 'aaaaaaaa']);
+    $membership = Membership::factory()
+        ->for(Member::factory()->defaults()->for($group))
+        ->for($group)
+        ->in('€ Mitglied', 122, 'Wölfling', 234)->from('2022-11-02')
+        ->create();
 
-    public static function membershipDataProvider(): Generator
-    {
-        yield [now()->subMonths(2), null, true];
-        yield [now()->subMonths(2), now()->subDay(), false];
-        yield [now()->addDays(2), null, false];
-    }
+    $this->get("/member/{$membership->member->id}/membership")
+        ->assertNull('meta.default.activity_id')
+        ->assertNull('meta.default.subactivity_id')
+        ->assertNull('meta.default.promised_at')
+        ->assertJsonPath('meta.default.group_id', $group->id)
+        ->assertJsonPath('meta.groups.0.id', $group->id)
+        ->assertJsonPath('meta.activities.0.id', $membership->activity->id)
+        ->assertJsonPath('meta.activities.0.name', $membership->activity->name)
+        ->assertJsonPath("meta.subactivities.{$membership->activity_id}.0.id", $membership->subactivity_id)
+        ->assertJsonPath("meta.subactivities.{$membership->activity_id}.0.name", $membership->subactivity->name)
+        ->assertJsonPath("meta.subactivities.{$membership->activity_id}.0.is_age_group", true)
+        ->assertJsonPath('meta.links.store', route('member.membership.store', ['member' => $membership->member]));
+});
 
-    #[DataProvider('membershipDataProvider')]
-    public function testItShowsIfMembershipIsActive(Carbon $from, ?Carbon $to, bool $isActive): void
-    {
-        $this->withoutExceptionHandling()->login()->loginNami();
-        $member = Member::factory()
-            ->defaults()
-            ->has(Membership::factory()->in('€ LeiterIn', 455, 'Pfadfinder', 15)->state(['from' => $from, 'to' => $to]))
-            ->create();
+it('promised at can be null', function () {
+    $this->withoutExceptionHandling()->login()->loginNami();
+    $member = Member::factory()
+        ->defaults()
+        ->has(Membership::factory()->in('€ Mitglied', 122, 'Wölfling', 234))
+        ->create();
 
-        $this->get("/member/{$member->id}/membership")
-            ->assertJsonPath('data.0.is_active', $isActive);
-    }
-}
+    $this->get("/member/{$member->id}/membership")
+        ->assertJsonPath('data.0.promised_at', null);
+});
+
+
+it('testItShowsIfMembershipIsActive', function (Carbon $from, ?Carbon $to, bool $isActive) {
+    $this->withoutExceptionHandling()->login()->loginNami();
+    $member = Member::factory()
+        ->defaults()
+        ->has(Membership::factory()->in('€ LeiterIn', 455, 'Pfadfinder', 15)->state(['from' => $from, 'to' => $to]))
+        ->create();
+
+    $this->get("/member/{$member->id}/membership")
+        ->assertJsonPath('data.0.is_active', $isActive);
+})->with([
+    [now()->subMonths(2), null, true],
+    [now()->subMonths(2), now()->subDay(), false],
+    [now()->addDays(2), null, false],
+]);
diff --git a/tests/TestCase.php b/tests/TestCase.php
index 555f2c4a..dec5fdb2 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -171,5 +171,13 @@ class TestCase extends BaseTestCase
 
             return $this;
         });
+
+        TestResponse::macro('assertNull', function (string $path) {
+            /** @var TestResponse */
+            $response = $this;
+            $response->assertHasJsonPath($path)->assertJsonPath($path, null);
+
+            return $this;
+        });
     }
 }