Add test for folder of scripts being mutated

rojo-test/src/serve_test.rs

@@ -2,7 +2,7 @@ use std::fs;
 
 use insta::assert_yaml_snapshot;
 
-use crate::serve_util::run_serve_test;
+use crate::serve_util::{intern_read_response, run_serve_test};
 
 #[test]
 fn empty() {
@@ -12,15 +12,37 @@ fn empty() {
         let root_id = info.root_instance_id;
 
         let info = redactions.redacted_yaml(info);
-
         assert_yaml_snapshot!(info);
 
         let read_result = session.get_api_read(root_id).unwrap();
-
-        redactions.intern_iter(read_result.instances.keys().copied());
-
+        intern_read_response(&mut redactions, &read_result, root_id);
         let read_result = redactions.redacted_yaml(read_result);
+        assert_yaml_snapshot!(read_result);
+    });
+}
 
+#[test]
+fn scripts() {
+    run_serve_test("scripts", |session, mut redactions| {
+        let info = session.get_api_rojo().unwrap();
+        let root_id = info.root_instance_id;
+
+        let info = redactions.redacted_yaml(info);
+        assert_yaml_snapshot!(info);
+
+        let read_result = session.get_api_read(root_id).unwrap();
+        intern_read_response(&mut redactions, &read_result, root_id);
+        let read_result = redactions.redacted_yaml(read_result);
+        assert_yaml_snapshot!(read_result);
+
+        fs::write(session.path().join("foo.lua"), "Updated foo!").unwrap();
+
+        let subscribe_result = session.get_api_subscribe(0).unwrap();
+        let subscribe_result = redactions.redacted_yaml(subscribe_result);
+        assert_yaml_snapshot!(subscribe_result);
+
+        let read_result = session.get_api_read(root_id).unwrap();
+        let read_result = redactions.redacted_yaml(read_result);
         assert_yaml_snapshot!(read_result);
     });
 }

rojo-test/src/serve_util.rs

@@ -22,6 +22,7 @@ pub fn run_serve_test(test_name: &str, callback: impl FnOnce(TestServeSession, R
 
     let snapshot_path = Path::new(env!("CARGO_MANIFEST_DIR")).join("serve-test-snapshots");
     settings.set_snapshot_path(snapshot_path);
+    settings.set_sort_maps(true);
 
     let mut redactions = RedactionMap::new();
 
@@ -34,6 +35,22 @@ pub fn run_serve_test(test_name: &str, callback: impl FnOnce(TestServeSession, R
     settings.bind(move || callback(session, redactions));
 }
 
+/// Intern the response to Rojo's read API, doing traversal in a deterministic
+/// order.
+pub fn intern_read_response(
+    redactions: &mut RedactionMap,
+    response: &ReadResponse,
+    root_id: RbxId,
+) {
+    redactions.intern(root_id);
+
+    let root_instance = response.instances.get(&root_id).unwrap();
+
+    for &child_id in root_instance.children.iter() {
+        intern_read_response(redactions, response, child_id);
+    }
+}
+
 fn get_port_number() -> usize {
     static NEXT_PORT_NUMBER: AtomicUsize = AtomicUsize::new(35103);