test: verify morph map resolves legacy model namespaces

Ensures that existing database records using the old App\Status,
App\Profile, etc. morph types correctly resolve to the new
App\Models\ classes via Relation::morphMap().

tests/Feature/ModelNamespaceMigrationTest.php

@@ -0,0 +1,83 @@
+<?php
+
+use App\Models\AccountInterstitial;
+use App\Models\DirectMessage;
+use App\Models\Follower;
+use App\Models\Like;
+use App\Models\Media;
+use App\Models\MediaTag;
+use App\Models\Notification;
+use App\Models\Profile;
+use App\Models\Report;
+use App\Models\Status;
+use App\Models\Story;
+use App\Models\User;
+use App\Models\UserFilter;
+use Illuminate\Database\Eloquent\Relations\Relation;
+
+describe('model namespace migration', function () {
+    it('resolves legacy App\\ morph types to App\\Models\\ classes', function () {
+        $morphMap = Relation::morphMap();
+
+        expect($morphMap)->toHaveKey('App\Status');
+        expect($morphMap['App\Status'])->toBe(Status::class);
+
+        expect($morphMap)->toHaveKey('App\Profile');
+        expect($morphMap['App\Profile'])->toBe(Profile::class);
+
+        expect($morphMap)->toHaveKey('App\User');
+        expect($morphMap['App\User'])->toBe(User::class);
+
+        expect($morphMap)->toHaveKey('App\DirectMessage');
+        expect($morphMap['App\DirectMessage'])->toBe(DirectMessage::class);
+
+        expect($morphMap)->toHaveKey('App\Media');
+        expect($morphMap['App\Media'])->toBe(Media::class);
+
+        expect($morphMap)->toHaveKey('App\MediaTag');
+        expect($morphMap['App\MediaTag'])->toBe(MediaTag::class);
+
+        expect($morphMap)->toHaveKey('App\Like');
+        expect($morphMap['App\Like'])->toBe(Like::class);
+
+        expect($morphMap)->toHaveKey('App\Notification');
+        expect($morphMap['App\Notification'])->toBe(Notification::class);
+
+        expect($morphMap)->toHaveKey('App\Story');
+        expect($morphMap['App\Story'])->toBe(Story::class);
+
+        expect($morphMap)->toHaveKey('App\Report');
+        expect($morphMap['App\Report'])->toBe(Report::class);
+
+        expect($morphMap)->toHaveKey('App\Follower');
+        expect($morphMap['App\Follower'])->toBe(Follower::class);
+
+        expect($morphMap)->toHaveKey('App\UserFilter');
+        expect($morphMap['App\UserFilter'])->toBe(UserFilter::class);
+
+        expect($morphMap)->toHaveKey('App\AccountInterstitial');
+        expect($morphMap['App\AccountInterstitial'])->toBe(AccountInterstitial::class);
+    });
+
+    it('resolves morph type to the correct model instance', function () {
+        $class = Relation::getMorphedModel('App\Status');
+        expect($class)->toBe(Status::class);
+
+        $class = Relation::getMorphedModel('App\Profile');
+        expect($class)->toBe(Profile::class);
+
+        $class = Relation::getMorphedModel('App\User');
+        expect($class)->toBe(User::class);
+    });
+
+    it('models reside in App\\Models namespace', function () {
+        expect(Status::class)->toBe('App\Models\Status');
+        expect(Profile::class)->toBe('App\Models\Profile');
+        expect(User::class)->toBe('App\Models\User');
+        expect(Media::class)->toBe('App\Models\Media');
+        expect(Like::class)->toBe('App\Models\Like');
+        expect(Notification::class)->toBe('App\Models\Notification');
+        expect(Story::class)->toBe('App\Models\Story');
+        expect(Follower::class)->toBe('App\Models\Follower');
+    });
+});