M1: cursor and double-click tests scan the system fonts themselves (#333)

crates/engine/src/cursor_tests.rs

@@ -58,6 +58,9 @@ fn close(a: f64, b: f64) -> bool {
 
 /// A square (100,100)–(200,200), selected, and the text "Hello" at (400, 100), not selected.
 fn scene() -> (Session, NodeId, NodeId) {
+    // The text is measured with a font: without craft-fonts that is a system one, scanned here
+    // rather than by whichever test happens to run first (#333).
+    figcraft_text::scan_system_fonts();
     let mut s = Session::new();
     let r = id(&ex(&mut s, "shape.rectangle", json!({"x": 100, "y": 100, "width": 100, "height": 100})));
     let t = id(&ex(&mut s, "text.create", json!({"text": "Hello", "x": 400, "y": 100, "props": {"fontSize": 40}})));

crates/engine/src/double_click_tests.rs

@@ -15,6 +15,9 @@ fn ex(s: &mut Session, cmd: &str, p: Value) -> Value {
 
 /// A frame holding a group of a rectangle and a text layer at (60, 60); returns (group, text).
 fn scene(s: &mut Session) -> (NodeId, NodeId) {
+    // The text is measured with a font: without craft-fonts that is a system one, scanned here
+    // rather than by whichever test happens to run first (#333).
+    figcraft_text::scan_system_fonts();
     let f = id_of(&ex(s, "frame.create", json!({"x": 0, "y": 0, "width": 400, "height": 300}))["id"]).unwrap();
     let r = id_of(&ex(s, "shape.rectangle", json!({"x": 40, "y": 40, "width": 200, "height": 60, "parent": f}))["id"]).unwrap();
     let t = id_of(&ex(s, "text.create", json!({"text": "Hi there", "x": 60, "y": 60, "parent": f, "props": {"fontSize": 16}}))["id"]).unwrap();