feat: Size2d.from_json()

raillabel/format/point2d.py

@@ -11,10 +11,10 @@ class Point2d:
     """A 2d point in an image."""
 
     x: int | float
-    "The x-coordinate of the point in the image in pixels."
+    "The x-coordinate of the point in the image in pixels from the left."
 
     y: int | float
-    "The y-coordinate of the point in the image in pixels."
+    "The y-coordinate of the point in the image in pixels from the top."
 
     @classmethod
     def from_json(cls, json: tuple[int | float, int | float]) -> Point2d:

raillabel/format/size2d.py

@@ -8,19 +8,18 @@
 
 @dataclass
 class Size2d:
-    """The size of a rectangle in a 2d image.
+    """The size of a rectangle in a 2d image."""
 
-    Parameters
-    ----------
-    x: float or int
-        The size along the x-axis.
-    y: float or int
-        The size along the y-axis.
+    x: int | float
+    "The size along the x-axis."
 
-    """
+    y: int | float
+    "The size along the y-axis."
 
-    x: float
-    y: float
+    @classmethod
+    def from_json(cls, json: tuple[int | float, int | float]) -> Size2d:
+        """Construct an instant of this class from RailLabel JSON data."""
+        return Size2d(x=json[0], y=json[1])
 
     @classmethod
     def fromdict(cls, data_dict: dict) -> Size2d:

tests/test_raillabel/format/test_point2d.py

@@ -3,14 +3,8 @@
 
 from __future__ import annotations
 
-import os
-import sys
-from pathlib import Path
-
 import pytest
 
-sys.path.insert(1, str(Path(__file__).parent.parent.parent.parent.parent))
-
 from raillabel.format import Point2d
 
 # == Fixtures =========================
@@ -61,5 +55,4 @@ def test_asdict():
 
 
 if __name__ == "__main__":
-    os.system("clear")
-    pytest.main([__file__, "--disable-pytest-warnings", "--cache-clear", "-v"])
+    pytest.main([__file__, "-v"])

tests/test_raillabel/format/test_size2d.py

@@ -3,14 +3,8 @@
 
 from __future__ import annotations
 
-import os
-import sys
-from pathlib import Path
-
 import pytest
 
-sys.path.insert(1, str(Path(__file__).parent.parent.parent.parent.parent))
-
 from raillabel.format import Size2d
 
 # == Fixtures =========================
@@ -29,6 +23,11 @@ def size2d() -> dict:
 # == Tests ============================
 
 
+def test_from_json(size2d, size2d_dict):
+    actual = Size2d.from_json(size2d_dict)
+    assert actual == size2d
+
+
 def test_fromdict():
     size2d = Size2d.fromdict([25, 1.344])
 
@@ -46,5 +45,4 @@ def test_asdict():
 
 
 if __name__ == "__main__":
-    os.system("clear")
-    pytest.main([__file__, "--disable-pytest-warnings", "--cache-clear", "-v"])
+    pytest.main([__file__, "-v"])