init commit with repo structure and basic files

tests/labeler/domain/test_objects.py

@@ -0,0 +1,29 @@
+import math
+
+from labeler.domain.objects import Dimension, MediaDefinition
+
+
+def test_dimension():
+    dimension = Dimension(mm=25.4)
+
+    assert dimension.mm == 25.4
+    assert dimension.inch == 1.0
+
+    assert dimension.in_pixels(dpi=300) == 300
+
+    assert dimension + Dimension(mm=10) == Dimension(mm=35.4)
+    assert dimension * 2 == Dimension(mm=50.8)
+
+    assert dimension / 2 == Dimension(mm=12.7)
+
+
+def test_infinite_media():
+    media = MediaDefinition(
+        width=Dimension(mm=12),
+        length=Dimension(mm=math.inf),
+        minimal_margin_vertical=Dimension(mm=1),
+        minimal_margin_horizontal=Dimension(mm=2),
+        dpi=300,
+    )
+
+    assert media.printable_length == Dimension(mm=math.inf)