class SaveTest

class SaveTest extends FileManagedUnitTestBase {
    use UserCreationTrait;
    public function testFileSave() : void {
        $account = $this->createUser();
        // Create a new file entity.
        $file = File::create([
            'uid' => $account->id(),
            'filename' => 'druplicon.txt',
            'uri' => 'public://druplicon.txt',
            'filemime' => 'text/plain',
        ]);
        $file->setPermanent();
        file_put_contents($file->getFileUri(), 'hello world');
        // Save it, inserting a new record.
        $file->save();
        // Check that the correct hooks were called.
        $this->assertFileHooksCalled([
            'insert',
        ]);
        // Verify that a new file ID is set when saving a new file to the database.
        $this->assertGreaterThan(0, $file->id());
        $loaded_file = File::load($file->id());
        $this->assertNotNull($loaded_file, 'Record exists in the database.');
        $this->assertEquals($file->isPermanent(), $loaded_file->isPermanent(), 'Status was saved correctly.');
        $this->assertEquals(filesize($file->getFileUri()), $file->getSize(), 'File size was set correctly.');
        // Verify that the new file size was set correctly.
        $this->assertGreaterThan(1, $file->getChangedTime());
        $this->assertEquals('en', $loaded_file->langcode->value, 'Langcode was defaulted correctly.');
        // Resave the file, updating the existing record.
        file_test_reset();
        $file->status->value = 7;
        $file->save();
        // Check that the correct hooks were called.
        $this->assertFileHooksCalled([
            'load',
            'update',
        ]);
        $this->assertEquals($file->id(), $file->id(), 'The file ID of an existing file is not changed when updating the database.');
        $loaded_file = File::load($file->id());
        // Verify that the timestamp didn't go backwards.
        $this->assertGreaterThanOrEqual($file->getChangedTime(), $loaded_file->getChangedTime());
        $this->assertNotNull($loaded_file, 'Record still exists in the database.');
        $this->assertEquals($file->isPermanent(), $loaded_file->isPermanent(), 'Status was saved correctly.');
        $this->assertEquals('en', $loaded_file->langcode->value, 'Langcode was saved correctly.');
        // Try to insert a second file with the same name apart from case insensitivity
        // to ensure the 'uri' index allows for filenames with different cases.
        $uppercase_values = [
            'uid' => $account->id(),
            'filename' => 'DRUPLICON.txt',
            'uri' => 'public://DRUPLICON.txt',
            'filemime' => 'text/plain',
        ];
        $file->setPermanent();
        $uppercase_file = File::create($uppercase_values);
        file_put_contents($uppercase_file->getFileUri(), 'hello world');
        $violations = $uppercase_file->validate();
        $this->assertCount(0, $violations, 'No violations when adding an URI with an existing filename in upper case.');
        $uppercase_file->save();
        // Ensure the database URI uniqueness constraint is triggered.
        $uppercase_file_duplicate = File::create($uppercase_values);
        file_put_contents($uppercase_file_duplicate->getFileUri(), 'hello world');
        $violations = $uppercase_file_duplicate->validate();
        $this->assertCount(1, $violations);
        $this->assertEquals(sprintf('The file %s already exists. Enter a unique file URI.', $uppercase_file_duplicate->getFileUri()), $violations[0]->getMessage());
        // Ensure that file URI entity queries are case sensitive.
        $fids = \Drupal::entityQuery('file')->accessCheck(FALSE)
            ->condition('uri', $uppercase_file->getFileUri())
            ->execute();
        $this->assertCount(1, $fids);
        $this->assertEquals([
            $uppercase_file->id() => $uppercase_file->id(),
        ], $fids);
        // Save a file with zero bytes.
        $file = File::create([
            'uid' => $account->id(),
            'filename' => 'no-druplicon.txt',
            'uri' => 'public://no-druplicon.txt',
            'filemime' => 'text/plain',
        ]);
        $file->setPermanent();
        file_put_contents($file->getFileUri(), '');
        // Save it, inserting a new record.
        $file->save();
        // Check the file size was set to zero.
        $this->assertSame(0, $file->getSize());
    }

}