beConstructedWith(['header1', 'header2']); } function it_is_initializable() { $this->shouldHaveType('Ddeboer\DataImport\Exception\DuplicateHeadersException'); } function it_is_a_reader_exception() { $this->shouldHaveType('Ddeboer\DataImport\Exception\ReaderException'); } function it_has_a_message() { $this->getMessage()->shouldReturn('File contains duplicate headers: header1, header2'); } }