import initial

tests/domain/test_grid.py

@@ -0,0 +1,57 @@
+import pytest
+from logimage.domain.value_objects.grid import Grid
+
+
+def _make_cells(rows: int, cols: int, value: bool = False) -> list[list[bool]]:
+    return [[value] * cols for _ in range(rows)]
+
+
+def test_grid_width_and_height() -> None:
+    grid = Grid.from_list(_make_cells(10, 15))
+    assert grid.width == 15
+    assert grid.height == 10
+
+
+def test_grid_row_returns_correct_values() -> None:
+    cells5 = [[True, False, True, False, True]] * 5
+    grid = Grid.from_list(cells5)
+    assert grid.row(0) == (True, False, True, False, True)
+
+
+def test_grid_col_returns_correct_values() -> None:
+    cells = [[True, False, False, False, False]] * 5
+    grid = Grid.from_list(cells)
+    assert grid.col(0) == (True, True, True, True, True)
+    assert grid.col(1) == (False, False, False, False, False)
+
+
+def test_grid_rejects_width_below_minimum() -> None:
+    with pytest.raises(ValueError, match="width"):
+        Grid.from_list([[True, False, True, False]] * 5)
+
+
+def test_grid_rejects_height_below_minimum() -> None:
+    with pytest.raises(ValueError, match="height"):
+        Grid.from_list([[True] * 5] * 4)
+
+
+def test_grid_rejects_width_above_maximum() -> None:
+    with pytest.raises(ValueError, match="width"):
+        Grid.from_list([[True] * 51] * 5)
+
+
+def test_grid_rejects_height_above_maximum() -> None:
+    with pytest.raises(ValueError, match="height"):
+        Grid.from_list([[True] * 5] * 51)
+
+
+def test_grid_is_immutable() -> None:
+    grid = Grid.from_list(_make_cells(5, 5))
+    with pytest.raises(AttributeError):
+        grid.cells = ()  # type: ignore[misc]
+
+
+def test_grid_from_list_converts_to_tuples() -> None:
+    grid = Grid.from_list(_make_cells(5, 5, True))
+    assert isinstance(grid.cells, tuple)
+    assert isinstance(grid.cells[0], tuple)