test: regression test for #623: blind bore into a joined boss fails to mesh (fails on v0.7.0, passes on main) (#654)

Adds a regression test for the blind bore into a joined boss (#623).

crates/engine/src/cmd/features_more_tests.rs

@@ -678,3 +678,19 @@ fn loft_intersect_that_trims_one_edge_changes_the_body() {
     let m = measure(&mut s);
     assert_eq!(m["bodies"][0]["face_types"]["cone"], 1, "{m}");
 }
+
+/// #623: a moulded front frame (rounded block, recess, through opening, four pockets from the back, two joined ribs,
+/// one joined Ø7 boss) and a Ø3.2 x 8 blind bore into the boss. Reduced from the issue's script; on 0.7.0 the bore
+/// fails on every run with "lumps: cannot mesh a complete shell boundary" (the original failed on about half).
+const RECIPE_623: &str = r#"{"commands":[{"command":"component.activate","params":{"component":"root"}},{"command":"sketch.create","params":{"plane":{"origin":[466.0,0,0],"x_dir":[0,1,0],"y_dir":[0,0,1]},"name":"PL01 Outline Sketch"}},{"command":"sketch.line","params":{"points":[[9.0,17.35],[231.0,17.35]],"closed":false}},{"command":"sketch.arc.center_point","params":{"center":[231.0,25.5],"start":[231.0,17.35],"end":[239.15,25.5]}},{"command":"sketch.line","params":{"points":[[239.15,25.5],[239.15,500.0]],"closed":false}},{"command":"sketch.arc.center_point","params":{"center":[231.0,500.0],"start":[239.15,500.0],"end":[231.0,508.15]}},{"command":"sketch.line","params":{"points":[[231.0,508.15],[9.0,508.15]],"closed":false}},{"command":"sketch.arc.center_point","params":{"center":[9.0,500.0],"start":[9.0,508.15],"end":[0.8500000000000001,500.0]}},{"command":"sketch.line","params":{"points":[[0.8500000000000001,500.0],[0.8500000000000001,25.5]],"closed":false}},{"command":"sketch.arc.center_point","params":{"center":[9.0,25.5],"start":[0.8500000000000001,25.5],"end":[9.0,17.35]}},{"command":"sketch.finish","params":{}},{"command":"solid.extrude","params":{"sketch":"PL01 Outline Sketch","distance":30.0,"operation":"new","direction":"positive","name":"PL01 Outline","body_name":"PL01 Front Frame"}},{"command":"sketch.create","params":{"plane":{"origin":[496.0,0,0],"x_dir":[0,1,0],"y_dir":[0,0,1]},"name":"PL01 Recess Sketch"}},{"command":"sketch.line","params":{"points":[[10.0,22.5],[230.0,22.5]],"closed":false}},{"command":"sketch.arc.center_point","params":{"center":[230.0,26.5],"start":[230.0,22.5],"end":[234.0,26.5]}},{"command":"sketch.line","params":{"points":[[234.0,26.5],[234.0,499.0]],"closed":false}},{"command":"sketch.arc.center_point","params":{"center":[230.0,499.0],"start":[234.0,499.0],"end":[230.0,503.0]}},{"command":"sketch.line","params":{"points":[[230.0,503.0],[10.0,503.0]],"closed":false}},{"command":"sketch.arc.center_point","params":{"center":[10.0,499.0],"start":[10.0,503.0],"end":[6.0,499.0]}},{"command":"sketch.line","params":{"points":[[6.0,499.0],[6.0,26.5]],"closed":false}},{"command":"sketch.arc.center_point","params":{"center":[10.0,26.5],"start":[6.0,26.5],"end":[10.0,22.5]}},{"command":"sketch.finish","params":{}},{"command":"solid.extrude","params":{"sketch":"PL01 Recess Sketch","distance":12.0,"operation":"cut","direction":"negative","name":"PL01 Recess","targets":["PL01 Front Frame"]}},{"command":"sketch.create","params":{"plane":{"origin":[484.0,0,0],"x_dir":[0,1,0],"y_dir":[0,0,1]},"name":"PL01 Opening Sketch"}},{"command":"sketch.line","params":{"points":[[20.5,36.0],[219.5,36.0]],"closed":false}},{"command":"sketch.arc.center_point","params":{"center":[219.5,38.0],"start":[219.5,36.0],"end":[221.5,38.0]}},{"command":"sketch.line","params":{"points":[[221.5,38.0],[221.5,488.5]],"closed":false}},{"command":"sketch.arc.center_point","params":{"center":[219.5,488.5],"start":[221.5,488.5],"end":[219.5,490.5]}},{"command":"sketch.line","params":{"points":[[219.5,490.5],[20.5,490.5]],"closed":false}},{"command":"sketch.arc.center_point","params":{"center":[20.5,488.5],"start":[20.5,490.5],"end":[18.5,488.5]}},{"command":"sketch.line","params":{"points":[[18.5,488.5],[18.5,38.0]],"closed":false}},{"command":"sketch.arc.center_point","params":{"center":[20.5,38.0],"start":[18.5,38.0],"end":[20.5,36.0]}},{"command":"sketch.finish","params":{}},{"command":"solid.extrude","params":{"sketch":"PL01 Opening Sketch","distance":18.0,"operation":"cut","direction":"negative","name":"PL01 Opening","targets":["PL01 Front Frame"]}},{"command":"sketch.create","params":{"plane":{"origin":[466.0,0,0],"x_dir":[0,1,0],"y_dir":[0,0,1]},"name":"PL01 Hollow 1 Sketch"}},{"command":"sketch.rectangle.two_point","params":{"p0":[3.35,28.85],"p1":[16.0,496.65]}},{"command":"sketch.finish","params":{}},{"command":"solid.extrude","params":{"sketch":"PL01 Hollow 1 Sketch","distance":15.5,"operation":"cut","direction":"positive","name":"PL01 Hollow 1","targets":["PL01 Front Frame"]}},{"command":"sketch.create","params":{"plane":{"origin":[466.0,0,0],"x_dir":[0,1,0],"y_dir":[0,0,1]},"name":"PL01 Hollow 2 Sketch"}},{"command":"sketch.rectangle.two_point","params":{"p0":[224.0,28.85],"p1":[236.65,496.65]}},{"command":"sketch.finish","params":{}},{"command":"solid.extrude","params":{"sketch":"PL01 Hollow 2 Sketch","distance":15.5,"operation":"cut","direction":"positive","name":"PL01 Hollow 2","targets":["PL01 Front Frame"]}},{"command":"sketch.create","params":{"plane":{"origin":[466.0,0,0],"x_dir":[0,1,0],"y_dir":[0,0,1]},"name":"PL01 Hollow 3 Sketch"}},{"command":"sketch.rectangle.two_point","params":{"p0":[12.35,19.85],"p1":[227.65,33.5]}},{"command":"sketch.finish","params":{}},{"command":"solid.extrude","params":{"sketch":"PL01 Hollow 3 Sketch","distance":15.5,"operation":"cut","direction":"positive","name":"PL01 Hollow 3","targets":["PL01 Front Frame"]}},{"command":"sketch.create","params":{"plane":{"origin"Line truncated
+
+#[test]
+fn blind_bore_into_a_joined_boss_meshes() {
+    let recipe: Value = serde_json::from_str(RECIPE_623).unwrap();
+    let mut s = Session::default();
+    for c in recipe["commands"].as_array().unwrap() {
+        run(&mut s, c["command"].as_str().unwrap(), c["params"].clone());
+    }
+    let m = measure(&mut s);
+    assert_eq!(m["bodies"].as_array().map(Vec::len), Some(1), "{m}");
+}