ModelTranslator: 烘焙射线距离/命名/包围盒校验纯逻辑（TDD）

Tools/ModelTranslator/tests/test_bl_bake.py

@@ -0,0 +1,47 @@
+import math
+import os
+import sys
+import unittest
+
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+import bl_bake as bb
+
+
+class TestEstimateRayDistance(unittest.TestCase):
+    def test_two_percent_of_bbox_diagonal(self):
+        # 3-4-12 直角箱对角线 = 13
+        self.assertAlmostEqual(bb.estimate_ray_distance((3.0, 4.0, 12.0)), 0.26)
+
+    def test_custom_pct(self):
+        self.assertAlmostEqual(
+            bb.estimate_ray_distance((1.0, 0.0, 0.0), pct=0.5), 0.5)
+
+
+class TestOutputStem(unittest.TestCase):
+    def test_strips_low_suffix(self):
+        self.assertEqual(bb.output_stem("well1500_low"), "well1500")
+
+    def test_keeps_name_without_suffix(self):
+        self.assertEqual(bb.output_stem("well1500"), "well1500")
+
+    def test_only_strips_trailing_suffix(self):
+        self.assertEqual(bb.output_stem("low_poly_low"), "low_poly")
+
+
+class TestBboxMismatch(unittest.TestCase):
+    def test_identical_ok(self):
+        self.assertFalse(bb.bbox_mismatch((1.0, 2.0, 3.0), (1.0, 2.0, 3.0)))
+
+    def test_within_10_percent_ok(self):
+        self.assertFalse(bb.bbox_mismatch((1.0, 2.0, 3.0), (1.05, 1.9, 3.2)))
+
+    def test_one_axis_exceeds(self):
+        self.assertTrue(bb.bbox_mismatch((1.0, 2.0, 3.0), (1.0, 2.0, 3.5)))
+
+    def test_zero_axis_ignored(self):
+        # 平面模型某轴为 0，不应误报
+        self.assertFalse(bb.bbox_mismatch((1.0, 0.0, 3.0), (1.0, 0.0, 3.0)))
+
+
+if __name__ == "__main__":
+    unittest.main()