class CopyTest

class CopyTest extends FileManagedUnitTestBase {
    
    /**
     * The file repository service under test.
     *
     * @var \Drupal\file\FileRepository
     */
    protected $fileRepository;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->fileRepository = $this->container
            ->get('file.repository');
    }
    
    /**
     * Tests file copying in the normal, base case.
     *
     * @covers ::copy
     */
    public function testNormal() : void {
        $contents = $this->randomMachineName(10);
        $source = $this->createFile(NULL, $contents);
        $desired_uri = 'public://' . $this->randomMachineName();
        // Clone the object so we don't have to worry about the function changing
        // our reference copy.
        $result = $this->fileRepository
            ->copy(clone $source, $desired_uri, FileExists::Error);
        // Check the return status and that the contents changed.
        $this->assertNotFalse($result, 'File copied successfully.');
        $this->assertEquals($contents, file_get_contents($result->getFileUri()), 'Contents of file were copied correctly.');
        // Check that the correct hooks were called.
        $this->assertFileHooksCalled([
            'copy',
            'insert',
        ]);
        $this->assertDifferentFile($source, $result);
        $this->assertEquals($result->getFileUri(), $desired_uri, 'The copied file entity has the desired filepath.');
        $this->assertFileExists($source->getFileUri());
        $this->assertFileExists($result->getFileUri());
        // Reload the file from the database and check that the changes were
        // actually saved.
        $this->assertFileUnchanged($result, File::load($result->id()));
    }
    
    /**
     * Tests renaming when copying over a file that already exists.
     *
     * @covers ::copy
     */
    public function testExistingRename() : void {
        // Setup a file to overwrite.
        $contents = $this->randomMachineName(10);
        $source = $this->createFile(NULL, $contents);
        $target = $this->createFile();
        $this->assertDifferentFile($source, $target);
        // Clone the object so we don't have to worry about the function changing
        // our reference copy.
        $result = $this->fileRepository
            ->copy(clone $source, $target->getFileUri(), FileExists::Rename);
        // Check the return status and that the contents changed.
        $this->assertNotFalse($result, 'File copied successfully.');
        $this->assertEquals($contents, file_get_contents($result->getFileUri()), 'Contents of file were copied correctly.');
        $this->assertNotEquals($source->getFileUri(), $result->getFileUri(), 'Returned file path has changed from the original.');
        // Check that the correct hooks were called.
        $this->assertFileHooksCalled([
            'copy',
            'insert',
        ]);
        // Load all the affected files to check the changes that actually made it
        // to the database.
        $loaded_source = File::load($source->id());
        $loaded_target = File::load($target->id());
        $loaded_result = File::load($result->id());
        // Verify that the source file wasn't changed.
        $this->assertFileUnchanged($source, $loaded_source);
        // Verify that what was returned is what's in the database.
        $this->assertFileUnchanged($result, $loaded_result);
        // Make sure we end up with three distinct files afterwards.
        $this->assertDifferentFile($loaded_source, $loaded_target);
        $this->assertDifferentFile($loaded_target, $loaded_result);
        $this->assertDifferentFile($loaded_source, $loaded_result);
    }
    
    /**
     * Tests replacement when copying over a file that already exists.
     *
     * @covers ::copy
     */
    public function testExistingReplace() : void {
        // Setup a file to overwrite.
        $contents = $this->randomMachineName(10);
        $source = $this->createFile(NULL, $contents);
        $target = $this->createFile();
        $this->assertDifferentFile($source, $target);
        // Clone the object so we don't have to worry about the function changing
        // our reference copy.
        $result = $this->fileRepository
            ->copy(clone $source, $target->getFileUri(), FileExists::Replace);
        // Check the return status and that the contents changed.
        $this->assertNotFalse($result, 'File copied successfully.');
        $this->assertEquals($contents, file_get_contents($result->getFileUri()), 'Contents of file were overwritten.');
        $this->assertDifferentFile($source, $result);
        // Check that the correct hooks were called.
        $this->assertFileHooksCalled([
            'load',
            'copy',
            'update',
        ]);
        // Load all the affected files to check the changes that actually made it
        // to the database.
        $loaded_source = File::load($source->id());
        $loaded_target = File::load($target->id());
        $loaded_result = File::load($result->id());
        // Verify that the source file wasn't changed.
        $this->assertFileUnchanged($source, $loaded_source);
        // Verify that what was returned is what's in the database.
        $this->assertFileUnchanged($result, $loaded_result);
        // Target file was reused for the result.
        $this->assertFileUnchanged($loaded_target, $loaded_result);
    }
    
    /**
     * Tests that copying over an existing file fails when instructed to do so.
     *
     * @covers ::copy
     */
    public function testExistingError() : void {
        $contents = $this->randomMachineName(10);
        $source = $this->createFile();
        $target = $this->createFile(NULL, $contents);
        $this->assertDifferentFile($source, $target);
        // Clone the object so we don't have to worry about the function changing
        // our reference copy.
        try {
            $this->fileRepository
                ->copy(clone $source, $target->getFileUri(), FileExists::Error);
            $this->fail('expected FileExistsException');
        } catch (FileExistsException $e) {
            $this->assertStringContainsString("could not be copied because a file by that name already exists in the destination directory", $e->getMessage());
        }
        // Check the contents were not changed.
        $this->assertEquals($contents, file_get_contents($target->getFileUri()), 'Contents of file were not altered.');
        // Check that the correct hooks were called.
        $this->assertFileHooksCalled([]);
        $this->assertFileUnchanged($source, File::load($source->id()));
        $this->assertFileUnchanged($target, File::load($target->id()));
    }
    
    /**
     * Tests for an invalid stream wrapper.
     *
     * @covers ::copy
     */
    public function testInvalidStreamWrapper() : void {
        $this->expectException(InvalidStreamWrapperException::class);
        $this->expectExceptionMessage('Invalid stream wrapper: foo://');
        $source = $this->createFile();
        $this->fileRepository
            ->copy($source, 'foo://');
    }
    
    /**
     * Tests for entity storage exception.
     *
     * @covers ::copy
     */
    public function testEntityStorageException() : void {
        
        /** @var \Drupal\Core\Entity\EntityTypeManager $entityTypeManager */
        $entityTypeManager = $this->prophesize(EntityTypeManager::class);
        $entityTypeManager->getStorage('file')
            ->willThrow(EntityStorageException::class);
        $fileRepository = new FileRepository($this->container
            ->get('file_system'), $this->container
            ->get('stream_wrapper_manager'), $entityTypeManager->reveal(), $this->container
            ->get('module_handler'), $this->container
            ->get('file.usage'), $this->container
            ->get('current_user'));
        $this->expectException(EntityStorageException::class);
        $source = $this->createFile();
        $target = $this->createFile();
        $fileRepository->copy($source, $target->getFileUri(), FileExists::Replace);
    }

}