refactor: rename calibration package

src/linkerhand_calibration/test/test_alignment_view.py

@@ -0,0 +1,39 @@
+"""Tests for the independent physical-line alignment overlay."""
+
+import pytest
+
+from linkerhand_calibration.alignment_view import (
+    summarize_alignment_measurements,
+)
+
+
+def _measurement(angle: float, offset: float, y: float) -> dict:
+    return {
+        "line_xyxy_px": [0.0, y, 100.0, y - angle * 100.0],
+        "angle_rad": angle,
+        "vertical_offset_px": offset,
+    }
+
+
+def test_line_summary_smooths_only_physical_line_measurements() -> None:
+    """The overlay smooths scene lines without any Tag orientation input."""
+    result = summarize_alignment_measurements(
+        [
+            _measurement(-0.02, -4.0, 80.0),
+            None,
+            _measurement(0.00, 0.0, 82.0),
+            _measurement(0.02, 4.0, 84.0),
+        ]
+    )
+
+    assert result is not None
+    assert result["angle_rad"] == pytest.approx(0.0)
+    assert result["vertical_offset_px"] == pytest.approx(0.0)
+    assert result["line_xyxy_px"] == pytest.approx([0.0, 82.0, 100.0, 82.0])
+    assert result["detected_frames"] == 3
+    assert result["window_frames"] == 4
+
+
+def test_line_summary_returns_none_without_scene_line() -> None:
+    """No blue line is fabricated when the scene has no valid long edge."""
+    assert summarize_alignment_measurements([None, None]) is None