root = vfs\vfsStream::setup(); } public function testWrite1() { $data = [ [ 'id' => '1', 'name' => 'Homer', 'gender' => 'male', ], [ 'id' => '2', 'name' => 'Bart', 'gender' => 'male', ], [ 'id' => '4', 'name' => 'Lisa', 'gender' => 'female', ], ]; $file = vfs\vfsStream::url('root/test.csv'); $writer = new Writer($file, $data); $writer->write(); $this->assertStringEqualsFile(__DIR__ . '/file1.csv', file_get_contents($file)); } public function testWrite2() { $data = [ [ 'id' => 1, 'name' => 'Homer', 'fat' => TRUE, 'brain' => NULL, 'data' => [1, 2, 3], ], ]; $file = vfs\vfsStream::url('root/test.csv'); $writer = new Writer($file, $data); $writer->write(); $this->assertStringEqualsFile(__DIR__ . '/file2.csv', file_get_contents($file)); } }