Add sketch solver test for issue CadQuery#1127

tests/test_sketch.py

@@ -708,6 +708,41 @@ def test_constraint_solver():
 
  assert s7._faces.isValid()
 
+ # Issue #1127 with Distance constraint providing invalid result
+ constrained_distance = 2
+ s8 = (
+ # Two segments that have a distance of 1
+ Sketch()
+ .segment((1, 2), (2, 2), "top")
+ .segment((2, 2), (2, 1), "right")
+ .segment((2, 1), (1, 1), "bottom")
+ .segment((1, 1), (1, 2), "left")
+ )
+ s8.constrain("bottom", "FixedPoint", 0)
+ s8.constrain("top", "Orientation", (1, 0))
+ s8.constrain("right", "Orientation", (0, -1))
+ s8.constrain("bottom", "Orientation", (-1, 0))
+ s8.constrain("left", "Orientation", (0, 1))
+
+ s8.constrain("top", "right", "Coincident", None)
+ s8.constrain("right", "bottom", "Coincident", None)
+ s8.constrain("bottom", "left", "Coincident", None)
+ s8.constrain("left", "top", "Coincident", None)
+
+ s8.constrain("top", "bottom", "Distance", (0.5, 0.5, constrained_distance))
+ s8.constrain("left", "right", "Distance", (0.5, 0.5, constrained_distance))
+ s8.solve()
+
+ assert s8._solve_status["status"] == 4
+
+ s8.assemble()
+ assert s8._faces.isValid()
+
+ # 2x2=4
+ assert s8._faces.Area() == approx(4)
+
+
+
 
 def test_dxf_import():