Test: saving SAT-text solids as DXF 2013 reports them, 2010 does not (#2334)

crates/engine/tests/save_reports_not_saved.rs

@@ -3,7 +3,7 @@
 //! writes them back as read: nothing to report.
 
 use cadcraft_engine::Session;
-use cadcraft_engine::cmd::file::{IoHooks, set_io};
+use cadcraft_engine::cmd::file::{IoHooks, SaveAs, set_io, set_write_as};
 use cadcraft_engine::doc::{Block, Common, Drawing, EntityKind, RawTag, Space, Unknown};
 use serde_json::json;
 
@@ -82,3 +82,33 @@ fn solids_whose_geometry_the_data_store_keeps_are_not_reported_from_2013() {
     // Before 2013 a file has no data store: every solid loses its geometry.
     assert_eq!(not_saved_as(&d, Version::R2010), [("3DSOLID".to_string(), 2), ("REGION".to_string(), 1)].into_iter().collect());
 }
+
+/// A DXF of 2013 or later can't hold a solid's SAT-text geometry (it lives in the data store
+/// there), so the save leaves it out and says so; 2010 and earlier keep it (#2334).
+#[test]
+fn saving_sat_text_solids_as_dxf_2013_reports_them() {
+    set_io(IoHooks { read: |_, _| Err("no reader in this test".into()), write: |_, _| Ok(b"0\nEOF\n".to_vec()), plot: None });
+    set_write_as(|_, _, _: &SaveAs| Ok(b"x".to_vec()));
+    let mut d = Drawing::new_imperial();
+    let sat = EntityKind::Unknown(Unknown {
+        dxf_type: "REGION".into(),
+        tags: vec![
+            RawTag { code: 8, value: "0".into() },
+            RawTag { code: 1, value: "400 1 1 0".into() },
+            RawTag { code: 3, value: "End-of-ACIS-data".into() },
+        ],
+    });
+    d.add(&Space::Model, Common::default(), sat).unwrap();
+    let mut s = Session::empty();
+    s.open_drawing(d, "region.dxf", None);
+
+    let path = std::env::temp_dir().join(format!("cadcraft-sat-note-{}.dxf", std::process::id()));
+    let r = s.execute("saveas", &json!({ "path": path.to_string_lossy(), "version": 2018 })).unwrap();
+    assert_eq!(r["notSaved"], json!({ "REGION": 1 }));
+    assert!(s.log.iter().any(|l| l.contains("Not saved in the DXF file") && l.contains("1 REGION")), "{:?}", s.log);
+
+    let n = s.log.len();
+    let r = s.execute("saveas", &json!({ "path": path.to_string_lossy(), "version": 2010 })).unwrap();
+    let _ = std::fs::remove_file(&path);
+    assert!(r.get("notSaved").is_none() && s.log.len() == n);
+}