Backport #870 (optional project names) to 7.4.x (#871)

Unlike most of the other backports, this code couldn't be directly
translated so it had to be re-implemented. Luckily, it is very simple.
This implementation is a bit messy and heavy handed with potential
panics, but I think it's probably fine since file names that aren't
UTF-8 aren't really supported anyway. The original implementation is a
lot cleaner though.

The test snapshots are (almost) all identical between the 7.5
implementation and this one. The sole exception is with the path in the
`snapshot_middleware::project` test, since I didn't feel like adding a
`name` parameter to `snapshot_project` in this implementation.

tests/tests/build.rs

@@ -59,6 +59,9 @@ gen_build_tests! {
     txt_in_folder,
     unresolved_values,
     weldconstraint,
+    no_name_default_project,
+    no_name_project,
+    no_name_top_level_project,
 }
 
 fn run_build_test(test_name: &str) {
@@ -70,7 +73,7 @@ fn run_build_test(test_name: &str) {
     let output_path = output_dir.path().join(format!("{}.rbxmx", test_name));
 
     let output = Command::new(ROJO_PATH)
-        .args(&[
+        .args([
             "build",
             input_path.to_str().unwrap(),
             "-o",

tests/tests/serve.rs

@@ -255,3 +255,57 @@ fn add_optional_folder() {
         );
     });
 }
+
+#[test]
+fn no_name_default_project() {
+    run_serve_test("no_name_default_project", |session, mut redactions| {
+        let info = session.get_api_rojo().unwrap();
+        let root_id = info.root_instance_id;
+
+        assert_yaml_snapshot!(
+            "no_name_default_project_info",
+            redactions.redacted_yaml(info)
+        );
+
+        let read_response = session.get_api_read(root_id).unwrap();
+        assert_yaml_snapshot!(
+            "no_name_default_project_all",
+            read_response.intern_and_redact(&mut redactions, root_id)
+        );
+    });
+}
+
+#[test]
+fn no_name_project() {
+    run_serve_test("no_name_project", |session, mut redactions| {
+        let info = session.get_api_rojo().unwrap();
+        let root_id = info.root_instance_id;
+
+        assert_yaml_snapshot!("no_name_project_info", redactions.redacted_yaml(info));
+
+        let read_response = session.get_api_read(root_id).unwrap();
+        assert_yaml_snapshot!(
+            "no_name_project_all",
+            read_response.intern_and_redact(&mut redactions, root_id)
+        );
+    });
+}
+
+#[test]
+fn no_name_top_level_project() {
+    run_serve_test("no_name_top_level_project", |session, mut redactions| {
+        let info = session.get_api_rojo().unwrap();
+        let root_id = info.root_instance_id;
+
+        assert_yaml_snapshot!(
+            "no_name_top_level_project_info",
+            redactions.redacted_yaml(info)
+        );
+
+        let read_response = session.get_api_read(root_id).unwrap();
+        assert_yaml_snapshot!(
+            "no_name_top_level_project_all",
+            read_response.intern_and_redact(&mut redactions, root_id)
+        );
+    });
+}