Layering: the render-based rotated-field test moves from forms to engine

forms (L3) gained a dev-dependency on render (L3) with #516, which
`xtask layers` refuses, so main CI failed. The one test that renders a
rotated field now lives in engine's tests, which may depend on both;
the parity evidence points there.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Cargo.lock

@@ -3642,7 +3642,6 @@ dependencies = [
  "pdfcraft-cos",
  "pdfcraft-fonts",
  "pdfcraft-model",
- "pdfcraft-render",
  "thiserror 2.0.21",
 ]
 

crates/engine/src/tests.rs

@@ -2205,3 +2205,51 @@ fn comments_without_appearances_are_drawn_but_not_saved() {
         assert!(reopened.get(r).as_dict().is_some_and(|d| !d.contains(b"AP")), "{r:?} is saved without /AP");
     }
 }
+
+/// Forms (L3) may not depend on render (L3), so this check of what a rotated field's appearance
+/// draws lives here, where both are available.
+#[test]
+fn a_rotated_form_field_draws_along_the_vertical_edge() {
+    use pdfcraft_cos::{Document, Object, SaveOptions, write_incremental};
+    use pdfcraft_forms::{FieldProps, FieldValue, NewField, add_field, set_props, set_value};
+    use pdfcraft_render::{PageRenderer, RenderConfig, RenderRequest, RequestKind};
+    let mut doc = Document::new_empty();
+    let pages = doc.get(doc.root().unwrap()).as_dict().unwrap().reference(b"Pages").unwrap();
+    let mut p = pdfcraft_cos::Dict::new();
+    p.set(b"Type".to_vec(), Object::name("Page"));
+    p.set(b"Parent".to_vec(), Object::Ref(pages));
+    p.set(b"MediaBox".to_vec(), Object::Array(vec![0.into(), 0.into(), 600.into(), 800.into()]));
+    let r = doc.add(p);
+    doc.update_dict(pages, |d| {
+        d.set(b"Kids".to_vec(), Object::Array(vec![Object::Ref(r)]));
+        d.set(b"Count".to_vec(), Object::Int(1));
+    })
+    .unwrap();
+    add_field(&mut doc, 0, [10.0, 40.0, 90.0, 60.0], &NewField::Text { multiline: false }, Some("wide")).unwrap();
+    set_value(&mut doc, "wide", &FieldValue::Text("MMMMMM".into())).unwrap();
+    set_props(&mut doc, "wide", &FieldProps { font_size: Some(12.0), ..FieldProps::default() }).unwrap();
+    let span = |doc: &Document| -> (u32, u32) {
+        let bytes = write_incremental(doc, &SaveOptions::default()).unwrap();
+        let mut r = PageRenderer::new(Arc::new(bytes), RenderConfig::default());
+        let p = r.render(RenderRequest { page: 0, kind: RequestKind::Pixels, tile: None, scale: 2.0, tag: 0 });
+        assert!(p.error.is_none(), "{:?}", p.error);
+        let (mut x0, mut y0, mut x1, mut y1) = (u32::MAX, u32::MAX, 0, 0);
+        let mut ink = false;
+        for y in 0..p.height {
+            for x in 0..p.width {
+                let i = ((y * p.width + x) * 4) as usize;
+                if p.rgba[i] < 200 {
+                    ink = true;
+                    (x0, y0, x1, y1) = (x0.min(x), y0.min(y), x1.max(x), y1.max(y));
+                }
+            }
+        }
+        assert!(ink, "the field drew no text");
+        (x1 - x0, y1 - y0)
+    };
+    let (wide, tall) = span(&doc);
+    assert!(wide > tall, "upright text is a horizontal run: {wide}x{tall}");
+    set_props(&mut doc, "wide", &FieldProps { rotation: Some((0, 90)), ..FieldProps::default() }).unwrap();
+    let (wide, tall) = span(&doc);
+    assert!(tall > wide, "rotated text is a vertical run: {wide}x{tall}");
+}

crates/forms/Cargo.toml

@@ -17,4 +17,3 @@ thiserror = { workspace = true }
 
 [dev-dependencies]
 hayro-syntax = { workspace = true }
-pdfcraft-render = { workspace = true }

crates/forms/src/tests.rs

@@ -1062,36 +1062,3 @@ fn a_rotation_refused_as_too_small_changes_nothing_else() {
     assert_eq!(f.tooltip, None, "the tooltip was written before the rotation was refused");
     assert_eq!(f.widgets[0].rotation, 0);
 }
-
-#[test]
-fn a_rotated_field_draws_along_the_vertical_edge() {
-    use pdfcraft_render::{PageRenderer, RenderConfig, RenderRequest, RequestKind};
-    let mut doc = one_page();
-    add_field(&mut doc, 0, [10.0, 40.0, 90.0, 60.0], &NewField::Text { multiline: false }, Some("wide")).unwrap();
-    set_value(&mut doc, "wide", &FieldValue::Text("MMMMMM".into())).unwrap();
-    set_props(&mut doc, "wide", &FieldProps { font_size: Some(12.0), ..FieldProps::default() }).unwrap();
-    let span = |doc: &Document| -> (u32, u32) {
-        let bytes = write_incremental(doc, &SaveOptions::default()).unwrap();
-        let mut r = PageRenderer::new(Arc::new(bytes), RenderConfig::default());
-        let p = r.render(RenderRequest { page: 0, kind: RequestKind::Pixels, tile: None, scale: 2.0, tag: 0 });
-        assert!(p.error.is_none(), "{:?}", p.error);
-        let (mut x0, mut y0, mut x1, mut y1) = (u32::MAX, u32::MAX, 0, 0);
-        let mut ink = false;
-        for y in 0..p.height {
-            for x in 0..p.width {
-                let i = ((y * p.width + x) * 4) as usize;
-                if p.rgba[i] < 200 {
-                    ink = true;
-                    (x0, y0, x1, y1) = (x0.min(x), y0.min(y), x1.max(x), y1.max(y));
-                }
-            }
-        }
-        assert!(ink, "the field drew no text");
-        (x1 - x0, y1 - y0)
-    };
-    let (wide, tall) = span(&doc);
-    assert!(wide > tall, "upright text is a horizontal run: {wide}x{tall}");
-    set_props(&mut doc, "wide", &FieldProps { rotation: Some((0, 90)), ..FieldProps::default() }).unwrap();
-    let (wide, tall) = span(&doc);
-    assert!(tall > wide, "rotated text is a vertical run: {wide}x{tall}");
-}

parity/acrobat-features.toml

@@ -4398,7 +4398,7 @@ milestone = "M6"
 status = "partial"
 commands = ["form.fields"]
 tools = ["form_fill", "form_set_props"]
-evidence = ["crates/forms/src/tests.rs::text_fields_get_new_appearances", "crates/forms/src/tests.rs::choices_accept_exports_or_display_text", "crates/forms/src/tests.rs::rotated_fields_draw_in_their_quadrant", "crates/forms/src/tests.rs::a_rotated_field_draws_along_the_vertical_edge", "crates/automation/tests/automation.rs::rotating_a_field_through_tools", "crates/ui-egui/tests/prepare.rs::position_tab_rotates_a_field"]
+evidence = ["crates/forms/src/tests.rs::text_fields_get_new_appearances", "crates/forms/src/tests.rs::choices_accept_exports_or_display_text", "crates/forms/src/tests.rs::rotated_fields_draw_in_their_quadrant", "crates/engine/src/tests.rs::a_rotated_form_field_draws_along_the_vertical_edge", "crates/automation/tests/automation.rs::rotating_a_field_through_tools", "crates/ui-egui/tests/prepare.rs::position_tab_rotates_a_field"]
 notes = "auto-size, comb, multiline, password, quadding, /MK colours and /MK /R rotation (0, 90, 180, 270); approximate Helvetica metrics"
 
 [[feature]]