Add test for csv, xls & pdf download.

Author: yajra

tests/DataTableServiceTest.php

@@ -3,6 +3,8 @@
 namespace Yajra\DataTables\Buttons\Tests;
 
 use Illuminate\Foundation\Testing\DatabaseTransactions;
+use Illuminate\Http\Response;
+use Symfony\Component\HttpFoundation\BinaryFileResponse;
 use Yajra\DataTables\Buttons\Tests\DataTables\UsersDataTable;
 
 class DataTableServiceTest extends TestCase
@@ -21,6 +23,39 @@ public function it_can_handle_ajax_request()
         ]);
     }
 
+    /** @test */
+    public function it_returns_view_on_normal_get_request()
+    {
+        $response = $this->get('users');
+
+        $response->assertSeeText('users-table');
+        $response->assertSeeText('LaravelDataTables');
+    }
+
+    /** @test */
+    public function it_can_return_a_csv_file()
+    {
+        $response = $this->get('users?action=csv');
+
+        $this->assertInstanceOf(BinaryFileResponse::class, $response->baseResponse);
+    }
+
+    /** @test */
+    public function it_can_return_a_xls_file()
+    {
+        $response = $this->get('users?action=excel');
+
+        $this->assertInstanceOf(BinaryFileResponse::class, $response->baseResponse);
+    }
+
+    /** @test */
+    public function it_can_return_a_pdf_file()
+    {
+        $response = $this->get('users?action=pdf');
+
+        $this->assertInstanceOf(Response::class, $response->baseResponse);
+    }
+
     protected function setUp(): void
     {
         parent::setUp();

tests/DataTables/UsersDataTable.php

@@ -23,7 +23,7 @@ public function query(User $user): Builder
         return $user->newQuery()->select('*');
     }
 
-    public function html()
+    public function html(): \Yajra\DataTables\Html\Builder
     {
         return $this->builder()
                     ->setTableId('users-table')

tests/TestCase.php

@@ -2,6 +2,7 @@
 
 namespace Yajra\DataTables\Buttons\Tests;
 
+use Barryvdh\Snappy\ServiceProvider;
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Testing\TestResponse;
 use Orchestra\Testbench\TestCase as BaseTestCase;
@@ -110,6 +111,7 @@ protected function getPackageProviders($app): array
             DataTablesServiceProvider::class,
             ButtonsServiceProvider::class,
             HtmlServiceProvider::class,
+            ServiceProvider::class,
         ];
     }
 

tests/views/users.blade.php

@@ -0,0 +1,3 @@
+{{ $dataTable->table() }}
+
+{{ $dataTable->scripts() }}