Correct issue with default.project.json files with no name being named default after change (#917)

Co-authored-by: Kenneth Loeffler <kenloef@gmail.com>

src/snapshot_middleware/mod.rs

@@ -63,6 +63,9 @@ pub fn snapshot_from_vfs(
     if meta.is_dir() {
         if let Some(init_path) = get_init_path(vfs, path)? {
             // TODO: support user-defined init paths
+            // If and when we do, make sure to go support it in
+            // `Project::set_file_name`, as right now it special-cases
+            // `default.project.json` as an `init` path.
             for rule in default_sync_rules() {
                 if rule.matches(&init_path) {
                     return match rule.middleware {
@@ -274,7 +277,7 @@ macro_rules! sync_rule {
 /// Defines the 'default' syncing rules that Rojo uses.
 /// These do not broadly overlap, but the order matters for some in the case of
 /// e.g. JSON models.
-fn default_sync_rules() -> &'static [SyncRule] {
+pub fn default_sync_rules() -> &'static [SyncRule] {
     static DEFAULT_SYNC_RULES: OnceLock<Vec<SyncRule>> = OnceLock::new();
 
     DEFAULT_SYNC_RULES.get_or_init(|| {

src/snapshot_middleware/project.rs

@@ -22,9 +22,12 @@ pub fn snapshot_project(
     path: &Path,
     name: &str,
 ) -> anyhow::Result<Option<InstanceSnapshot>> {
-    let project = Project::load_from_slice(&vfs.read(path)?, path)
+    let project = Project::load_exact(vfs, path, Some(name))
         .with_context(|| format!("File was not a valid Rojo project: {}", path.display()))?;
-    let project_name = project.name.as_deref().unwrap_or(name);
+    let project_name = match project.name.as_deref() {
+        Some(name) => name,
+        None => panic!("Project is missing a name"),
+    };
 
     let mut context = context.clone();
     context.clear_sync_rules();

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__project__test__no_name_project.snap

@@ -1,6 +1,5 @@
 ---
 source: src/snapshot_middleware/project.rs
-assertion_line: 730
 expression: instance_snapshot
 ---
 snapshot_id: "00000000000000000000000000000000"
@@ -13,7 +12,7 @@ metadata:
   context:
     emit_legacy_scripts: true
   specified_id: ~
-name: no_name_project
+name: foo
 class_name: Model
 properties: {}
 children: []