import constants as c


def test_fixture_images_dir_has_jpegs(fixture_images_dir):
    jpgs = list(fixture_images_dir.glob("*.jpg"))
    assert len(jpgs) == 20


def test_fixture_labels_dir_has_yolo_labels(fixture_labels_dir):
    txts = list(fixture_labels_dir.glob("*.txt"))
    assert len(txts) == 20


def test_fixture_onnx_model_bytes(fixture_onnx_model):
    assert len(fixture_onnx_model) > 0


def test_fixture_classes_json_exists(fixture_classes_json):
    assert fixture_classes_json.is_file()
    assert fixture_classes_json.name == "classes.json"


def test_work_dir_layout(work_dir):
    assert (work_dir / "images").is_dir()
    assert (work_dir / "labels").is_dir()


def test_sample_image_label_paths(sample_image_label):
    img, lbl = sample_image_label
    assert img.suffix.lower() == ".jpg"
    assert lbl.suffix == ".txt"
    assert img.exists() and lbl.exists()
    assert img.stem == lbl.stem


def test_sample_images_labels_factory(sample_images_labels):
    img_dir, lbl_dir = sample_images_labels(3)
    assert len(list(img_dir.glob("*.jpg"))) == 3
    assert len(list(lbl_dir.glob("*.txt"))) == 3


def test_corrupted_label_content(corrupted_label):
    text = corrupted_label.read_text(encoding="utf-8")
    assert "1.5" in text


def test_edge_bbox_label_exists(edge_bbox_label):
    assert edge_bbox_label.read_text(encoding="utf-8").strip()


def test_empty_label_file(empty_label):
    assert empty_label.read_text(encoding="utf-8") == ""


def test_constants_patch_uses_tmp(constants_patch, tmp_path):
    constants_patch(tmp_path)
    assert c.config.root.startswith(str(tmp_path))
    assert c.config.data_dir.startswith(str(tmp_path))
    assert c.config.current_onnx_model.startswith(str(tmp_path))