Add syncback roundtrip and clean mode stress tests

- Introduced a new testing plan for comprehensive build-syncback roundtrip tests and mutation stress tests to ensure clean mode produces consistent results.
- Created utility functions for running builds and syncbacks, and for asserting directory equality.
- Updated existing tests to reflect changes in behavior when standalone scripts receive children, ensuring they convert to directory format.
- Added new test cases to validate the conversion of standalone scripts and modules when children are added, enhancing coverage of syncback functionality.
This commit is contained in:
Joe 2026-02-01 18:34:02 -06:00
parent 0eb135ee15
commit c08f701f0e
4 changed files with 725 additions and 43 deletions

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@ -0,0 +1,620 @@
---
name: Syncback Roundtrip Tests
overview: Add comprehensive build-syncback roundtrip tests and mutation stress tests to validate clean mode produces consistent results, complementing the existing 100+ syncback tests.
todos:
- id: roundtrip-utils
content: "Create `tests/rojo_test/roundtrip_util.rs` with helpers: `run_rojo_build`, `assert_dirs_equal`, `Mutation` enum and `apply_mutation`"
status: pending
- id: roundtrip-tests
content: Create `tests/tests/syncback_roundtrip.rs` with build -> syncback -> rebuild roundtrip tests using existing build-test projects
status: pending
- id: clean-stress-tests
content: Create `tests/tests/clean_mode_stress.rs` with clean-equals-fresh tests covering 12+ mutation scenarios
status: pending
- id: wire-modules
content: Update `tests/rojo_test/mod.rs` and `tests/tests/mod.rs` to include new test modules
status: pending
isProject: false
---
# Syncback Roundtrip and Clean Mode Stress Tests
## Context: The Syncback Work Done
This testing plan builds on significant syncback improvements:
### 1. Destructive/Clean Mode (Default)
From [destructive_syncback_mode plan](destructive_syncback_mode_acb8cb54.plan.md):
- Clean mode ignores existing file structure (`old = None`)
- Scans filesystem for ALL existing paths before syncback
- Removes orphaned files after syncback completes
- `--incremental` flag to opt into legacy structure-preserving behavior
Key implementation in `src/syncback/mod.rs`:
- Collects existing paths from filesystem (not just tree)
- Sets `old_ref = None` in clean mode so all children treated as new
- Removes orphaned paths after computing new structure
### 2. Plugin API Architecture Fix
From [architecture fix plan](rojo_syncback_architecture_fix_bc0c13ab.plan.md):
- Tree-based instance lookup before format decisions
- `detect_existing_script_format()` checks filesystem state
- Format preservation to prevent duplicate file creation
- Prevents the "duplicate creation cycle" bug
Key implementation in `src/web/api.rs`:
- `ExistingFileFormat` enum (None, Standalone, Directory)
- Checks if `Name/init.luau` or `Name.luau` exists before deciding format
- Plugin syncback respects existing file structure
---
## Current Test Coverage
| Test File | Count | Purpose |
| -------------------------------- | ----- | ---------------------------------------------------------------------- |
| `syncback.rs` | 25 | CLI syncback with pre-built rbxl/rbxm files (18 clean + 7 incremental) |
| `syncback_format_transitions.rs` | 47 | Plugin API format preservation via `/api/write` |
| `clean_mode.rs` | 6 | Clean vs incremental basic behavior |
| `serve.rs` | 22 | General serve tests including write API |
**Total: ~100 syncback-related tests**
Test projects in `rojo-test/syncback-tests/` cover:
- Reference properties (6 tests)
- Ignore rules (5 tests)
- Nested projects (2 tests)
- File format/middleware (5 tests)
- Edge cases/conflicts (4 tests)
---
## Key Gaps
1. **No dynamic build-syncback roundtrip**: All tests use static pre-built `.rbxl`/`.rbxm` files, not dynamically built ones
2. **No mutation stress tests**: No tests that dirty the filesystem and verify clean mode fixes it
3. **No "clean == fresh" equivalence proof**: No tests proving clean mode on dirty dir equals fresh syncback
---
## Implementation Plan
### 1. Helper Utilities: `tests/rojo_test/roundtrip_util.rs`
```rust
use std::path::{Path, PathBuf};
use std::process::Command;
use tempfile::TempDir;
use super::io_util::ROJO_PATH;
/// Run `rojo build` and return (temp_dir_handle, output_path)
pub fn run_rojo_build(project_path: &Path, output_name: &str) -> (TempDir, PathBuf) {
let output_dir = tempfile::tempdir().expect("Failed to create temp dir");
let output_path = output_dir.path().join(output_name);
let output = Command::new(ROJO_PATH)
.args(["build", project_path.to_str().unwrap(), "-o", output_path.to_str().unwrap()])
.output()
.expect("Failed to run rojo build");
if !output.status.success() {
panic!(
"rojo build failed:\nstdout: {}\nstderr: {}",
String::from_utf8_lossy(&output.stdout),
String::from_utf8_lossy(&output.stderr)
);
}
(output_dir, output_path)
}
/// Run `rojo syncback` in clean mode (default)
pub fn run_rojo_syncback_clean(project_path: &Path, input_path: &Path) -> bool {
Command::new(ROJO_PATH)
.args([
"syncback",
project_path.to_str().unwrap(),
"--input",
input_path.to_str().unwrap(),
])
.status()
.map(|s| s.success())
.unwrap_or(false)
}
/// Compare two directories recursively, asserting they have identical content
pub fn assert_dirs_equal(dir_a: &Path, dir_b: &Path) {
let files_a = collect_files(dir_a);
let files_b = collect_files(dir_b);
// Compare file sets
let set_a: HashSet<_> = files_a.keys().collect();
let set_b: HashSet<_> = files_b.keys().collect();
let only_in_a: Vec<_> = set_a.difference(&set_b).collect();
let only_in_b: Vec<_> = set_b.difference(&set_a).collect();
assert!(
only_in_a.is_empty() && only_in_b.is_empty(),
"Directory contents differ:\n Only in A: {:?}\n Only in B: {:?}",
only_in_a, only_in_b
);
// Compare file contents
for (rel_path, content_a) in &files_a {
let content_b = &files_b[rel_path];
assert_eq!(
content_a, content_b,
"File contents differ for {:?}", rel_path
);
}
}
fn collect_files(dir: &Path) -> HashMap<PathBuf, Vec<u8>> {
let mut result = HashMap::new();
collect_files_recursive(dir, dir, &mut result);
result
}
fn collect_files_recursive(base: &Path, current: &Path, result: &mut HashMap<PathBuf, Vec<u8>>) {
for entry in fs::read_dir(current).unwrap() {
let entry = entry.unwrap();
let path = entry.path();
let rel_path = path.strip_prefix(base).unwrap().to_path_buf();
if path.is_dir() {
collect_files_recursive(base, &path, result);
} else {
let content = fs::read(&path).unwrap();
result.insert(rel_path, content);
}
}
}
/// Mutation types for stress testing clean mode
pub enum Mutation {
/// Add an orphan file that doesn't exist in the rbxl
AddOrphanFile { relative_path: &'static str, content: &'static str },
/// Delete a file that exists in the rbxl
DeleteFile { relative_path: &'static str },
/// Rename a file (creates orphan + missing file)
RenameFile { from: &'static str, to: &'static str },
/// Change file extension (e.g., .luau -> .modulescript)
ChangeExtension { from: &'static str, to: &'static str },
/// Add an orphan directory with content
AddOrphanDirectory { relative_path: &'static str },
/// Delete an entire directory
DeleteDirectory { relative_path: &'static str },
/// Convert directory format to standalone file
ConvertDirToFile { dir: &'static str, file_content: &'static str },
/// Convert standalone file to directory format
ConvertFileToDir { file: &'static str },
/// Corrupt a .meta.json5 file
CorruptMetaFile { relative_path: &'static str },
/// Modify file content to be wrong
ModifyFileContent { relative_path: &'static str, new_content: &'static str },
/// Add a spurious .project.json5 file
AddNestedProjectFile { relative_path: &'static str },
/// Create duplicate with different extension
DuplicateWithDifferentExtension { original: &'static str, duplicate_ext: &'static str },
}
pub fn apply_mutation(dir: &Path, mutation: &Mutation) {
match mutation {
Mutation::AddOrphanFile { relative_path, content } => {
let path = dir.join(relative_path);
if let Some(parent) = path.parent() {
fs::create_dir_all(parent).ok();
}
fs::write(&path, content).expect("Failed to write orphan file");
}
Mutation::DeleteFile { relative_path } => {
let path = dir.join(relative_path);
fs::remove_file(&path).expect("Failed to delete file");
}
Mutation::RenameFile { from, to } => {
let from_path = dir.join(from);
let to_path = dir.join(to);
fs::rename(&from_path, &to_path).expect("Failed to rename file");
}
Mutation::ChangeExtension { from, to } => {
let from_path = dir.join(from);
let to_path = dir.join(to);
fs::rename(&from_path, &to_path).expect("Failed to change extension");
}
Mutation::AddOrphanDirectory { relative_path } => {
let path = dir.join(relative_path);
fs::create_dir_all(&path).expect("Failed to create orphan directory");
// Add a file so the directory isn't empty
fs::write(path.join("orphan_child.luau"), "-- orphan").ok();
}
Mutation::DeleteDirectory { relative_path } => {
let path = dir.join(relative_path);
fs::remove_dir_all(&path).expect("Failed to delete directory");
}
Mutation::ConvertDirToFile { dir: dir_path, file_content } => {
let path = dir.join(dir_path);
fs::remove_dir_all(&path).expect("Failed to remove directory");
// Create standalone file with same base name
let file_path = path.with_extension("luau");
fs::write(&file_path, file_content).expect("Failed to write file");
}
Mutation::ConvertFileToDir { file } => {
let file_path = dir.join(file);
let content = fs::read_to_string(&file_path).unwrap_or_default();
fs::remove_file(&file_path).expect("Failed to remove file");
// Create directory with init file
let dir_path = file_path.with_extension("");
fs::create_dir_all(&dir_path).expect("Failed to create directory");
fs::write(dir_path.join("init.luau"), content).expect("Failed to write init");
}
Mutation::CorruptMetaFile { relative_path } => {
let path = dir.join(relative_path);
fs::write(&path, "{ this is not valid json5 {{{{").expect("Failed to corrupt meta");
}
Mutation::ModifyFileContent { relative_path, new_content } => {
let path = dir.join(relative_path);
fs::write(&path, new_content).expect("Failed to modify content");
}
Mutation::AddNestedProjectFile { relative_path } => {
let path = dir.join(relative_path);
if let Some(parent) = path.parent() {
fs::create_dir_all(parent).ok();
}
fs::write(&path, r#"{ "name": "SpuriousProject", "tree": { "$className": "Folder" } }"#)
.expect("Failed to add nested project");
}
Mutation::DuplicateWithDifferentExtension { original, duplicate_ext } => {
let orig_path = dir.join(original);
let content = fs::read(&orig_path).unwrap_or_default();
let dup_path = orig_path.with_extension(duplicate_ext);
fs::write(&dup_path, content).expect("Failed to create duplicate");
}
}
}
```
### 2. Roundtrip Tests: `tests/tests/syncback_roundtrip.rs`
```rust
//! Build -> Syncback -> Rebuild roundtrip tests.
//!
//! These tests verify that:
//! 1. Building a project to rbxl
//! 2. Syncing back to a fresh directory
//! 3. Rebuilding from the syncback result
//! Produces semantically identical output.
use std::path::Path;
use tempfile::tempdir;
use crate::rojo_test::io_util::{copy_recursive, BUILD_TESTS_PATH};
use crate::rojo_test::roundtrip_util::{run_rojo_build, run_rojo_syncback_clean};
macro_rules! roundtrip_tests {
($($test_name:ident),* $(,)?) => {$(
#[test]
fn $test_name() {
run_roundtrip_test(stringify!($test_name));
}
)*};
}
fn run_roundtrip_test(build_test_name: &str) {
let _ = env_logger::try_init();
let project_path = Path::new(BUILD_TESTS_PATH).join(build_test_name);
// 1. Build original project -> rbxl
let (_tmp1, original_rbxl) = run_rojo_build(&project_path, "original.rbxl");
// 2. Create fresh syncback target with just project file
let syncback_dir = tempdir().expect("Failed to create temp dir");
copy_project_file(&project_path, syncback_dir.path());
// 3. Syncback from rbxl to fresh directory
assert!(
run_rojo_syncback_clean(syncback_dir.path(), &original_rbxl),
"Syncback should succeed"
);
// 4. Build from syncback result -> rbxl
let (_tmp2, roundtrip_rbxl) = run_rojo_build(syncback_dir.path(), "roundtrip.rbxl");
// 5. Compare both rbxl files (semantic comparison)
assert_rbx_equal(&original_rbxl, &roundtrip_rbxl);
}
fn copy_project_file(src: &Path, dst: &Path) {
// Copy just the project file (default.project.json5)
for name in ["default.project.json5", "default.project.json"] {
let src_file = src.join(name);
if src_file.exists() {
fs::copy(&src_file, dst.join(name)).unwrap();
return;
}
}
panic!("No project file found in {:?}", src);
}
fn assert_rbx_equal(file_a: &Path, file_b: &Path) {
// Load both rbxl files and compare instance trees
let dom_a = rbx_binary::from_reader(fs::File::open(file_a).unwrap()).unwrap();
let dom_b = rbx_binary::from_reader(fs::File::open(file_b).unwrap()).unwrap();
// Compare root children (skip DataModel itself)
compare_instances(&dom_a, dom_a.root_ref(), &dom_b, dom_b.root_ref());
}
// Test ALL build-test projects that should roundtrip cleanly
roundtrip_tests! {
attributes,
client_in_folder,
client_init,
deep_nesting,
init_meta_class_name,
init_meta_properties,
init_with_children,
json_model_in_folder,
json_model_legacy_name,
module_in_folder,
module_init,
project_composed_default,
project_composed_file,
project_root_name,
rbxm_in_folder,
rbxmx_in_folder,
server_in_folder,
server_init,
txt,
txt_in_folder,
sync_rule_alone,
sync_rule_complex,
}
```
### 3. Clean Mode Stress Tests: `tests/tests/clean_mode_stress.rs`
```rust
//! Stress tests proving clean mode produces consistent results.
//!
//! Core invariant: syncing back to a DIRTY directory with clean mode
//! should produce IDENTICAL results to syncing back to an EMPTY directory.
//!
//! Tests apply various "mutations" to dirty up the filesystem, then verify
//! clean mode fixes everything.
use std::path::Path;
use tempfile::tempdir;
use crate::rojo_test::io_util::{copy_recursive, BUILD_TESTS_PATH};
use crate::rojo_test::roundtrip_util::{
apply_mutation, assert_dirs_equal, run_rojo_build, run_rojo_syncback_clean, Mutation,
};
/// Core test: dirty syncback should equal fresh syncback
fn clean_equals_fresh(test_name: &str, mutations: &[Mutation]) {
let _ = env_logger::try_init();
let project_path = Path::new(BUILD_TESTS_PATH).join(test_name);
// 1. Build rbxl from original project
let (_tmp_rbxl, rbxl_path) = run_rojo_build(&project_path, "test.rbxl");
// 2. Syncback to DIR_A (fresh start)
let dir_a = tempdir().expect("Failed to create dir_a");
copy_project_file(&project_path, dir_a.path());
assert!(run_rojo_syncback_clean(dir_a.path(), &rbxl_path), "Initial syncback failed");
// 3. Apply mutations to DIR_A (dirty it up)
for mutation in mutations {
apply_mutation(dir_a.path(), mutation);
}
// 4. Run clean syncback again on dirty DIR_A
assert!(run_rojo_syncback_clean(dir_a.path(), &rbxl_path), "Clean syncback on dirty dir failed");
// 5. Syncback to DIR_B (completely fresh)
let dir_b = tempdir().expect("Failed to create dir_b");
copy_project_file(&project_path, dir_b.path());
assert!(run_rojo_syncback_clean(dir_b.path(), &rbxl_path), "Fresh syncback failed");
// 6. CRITICAL ASSERTION: cleaned DIR_A == fresh DIR_B
assert_dirs_equal(dir_a.path(), dir_b.path());
}
// ==========================================================================
// MUTATION SCENARIO TESTS
// ==========================================================================
#[test]
fn clean_removes_orphan_luau_files() {
clean_equals_fresh("deep_nesting", &[
Mutation::AddOrphanFile {
relative_path: "src/orphan_script.luau",
content: "-- I shouldn't exist"
},
Mutation::AddOrphanFile {
relative_path: "src/inner/another_orphan.luau",
content: "return nil"
},
]);
}
#[test]
fn clean_removes_orphan_directories() {
clean_equals_fresh("deep_nesting", &[
Mutation::AddOrphanDirectory {
relative_path: "src/fake_service"
},
]);
}
#[test]
fn clean_restores_deleted_files() {
clean_equals_fresh("module_init", &[
Mutation::DeleteFile { relative_path: "folder/init.luau" },
]);
}
#[test]
fn clean_fixes_renamed_files() {
clean_equals_fresh("module_in_folder", &[
Mutation::RenameFile {
from: "folder/aModule.luau",
to: "folder/wrongName.luau"
},
]);
}
#[test]
fn clean_fixes_wrong_extensions() {
clean_equals_fresh("server_in_folder", &[
Mutation::ChangeExtension {
from: "folder/serverScript.server.luau",
to: "folder/serverScript.modulescript"
},
]);
}
#[test]
fn clean_restores_dir_from_file() {
clean_equals_fresh("init_with_children", &[
Mutation::ConvertDirToFile {
dir: "src",
file_content: "-- was a directory"
},
]);
}
#[test]
fn clean_restores_file_from_dir() {
clean_equals_fresh("module_in_folder", &[
Mutation::ConvertFileToDir {
file: "folder/aModule.luau"
},
]);
}
#[test]
fn clean_fixes_corrupt_meta_files() {
clean_equals_fresh("init_meta_properties", &[
Mutation::CorruptMetaFile {
relative_path: "Lighting/init.meta.json5"
},
]);
}
#[test]
fn clean_restores_modified_content() {
clean_equals_fresh("module_init", &[
Mutation::ModifyFileContent {
relative_path: "folder/init.luau",
new_content: "-- totally wrong content\nreturn 'hacked'"
},
]);
}
#[test]
fn clean_removes_spurious_project_files() {
clean_equals_fresh("deep_nesting", &[
Mutation::AddNestedProjectFile {
relative_path: "src/fake.project.json5"
},
]);
}
#[test]
fn clean_removes_duplicate_extensions() {
clean_equals_fresh("module_in_folder", &[
Mutation::DuplicateWithDifferentExtension {
original: "folder/aModule.luau",
duplicate_ext: "lua"
},
]);
}
#[test]
fn clean_handles_multiple_crazy_mutations() {
clean_equals_fresh("deep_nesting", &[
Mutation::AddOrphanFile { relative_path: "orphan1.luau", content: "x" },
Mutation::AddOrphanFile { relative_path: "src/orphan2.txt", content: "y" },
Mutation::AddOrphanDirectory { relative_path: "fake_dir" },
Mutation::ModifyFileContent {
relative_path: "src/inner/init.luau",
new_content: "-- wrong!"
},
Mutation::AddNestedProjectFile { relative_path: "src/bad.project.json5" },
]);
}
```
### 4. Wire Up Modules
`**tests/rojo_test/mod.rs`:**
```rust
pub mod roundtrip_util;
```
`**tests/tests/mod.rs`:**
```rust
mod syncback_roundtrip;
mod clean_mode_stress;
```
---
## Test Matrix
| Mutation Type | Test Name | Verifies |
| -------------------- | ---------------------------------------- | ------------------------ |
| Orphan .luau files | `clean_removes_orphan_luau_files` | Orphan file removal |
| Orphan directories | `clean_removes_orphan_directories` | Orphan directory removal |
| Deleted files | `clean_restores_deleted_files` | File restoration |
| Renamed files | `clean_fixes_renamed_files` | Name correction |
| Wrong extensions | `clean_fixes_wrong_extensions` | Extension normalization |
| Dir to File | `clean_restores_dir_from_file` | Format restoration |
| File to Dir | `clean_restores_file_from_dir` | Format restoration |
| Corrupt meta | `clean_fixes_corrupt_meta_files` | Meta regeneration |
| Modified content | `clean_restores_modified_content` | Content restoration |
| Spurious projects | `clean_removes_spurious_project_files` | Nested project cleanup |
| Duplicate extensions | `clean_removes_duplicate_extensions` | Duplicate removal |
| Combined chaos | `clean_handles_multiple_crazy_mutations` | Stress test |
---
## Files to Create/Modify
| File | Action |
| ----------------------------------- | ------------------------------------ |
| `tests/rojo_test/roundtrip_util.rs` | Create - helper utilities |
| `tests/tests/syncback_roundtrip.rs` | Create - roundtrip tests |
| `tests/tests/clean_mode_stress.rs` | Create - mutation stress tests |
| `tests/rojo_test/mod.rs` | Modify - add `roundtrip_util` module |
| `tests/tests/mod.rs` | Modify - add new test modules |
---
## Success Criteria
1. All 20+ build-test projects can roundtrip successfully (build -> syncback -> rebuild -> compare)
2. All 12 mutation scenarios pass (clean == fresh invariant holds)
3. Tests run in CI without flakiness
4. Total added test runtime < 60 seconds

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@ -621,12 +621,48 @@ impl ApiService {
let children_dir = if existing_path.is_dir() {
existing_path.to_path_buf()
} else {
// For standalone scripts, children would need directory conversion
// For now, use the parent directory as the base
existing_path
// Standalone scripts cannot have children in Rojo's file format.
// We need to convert from standalone (e.g., MyScript.server.luau)
// to directory format (e.g., MyScript/init.server.luau).
let script_name = added.name.as_str();
let parent_dir = existing_path
.parent()
.map(|p| p.to_path_buf())
.unwrap_or_else(|| existing_path.to_path_buf())
.unwrap_or(existing_path);
let new_dir = parent_dir.join(script_name);
// Create the directory
fs::create_dir_all(&new_dir).with_context(|| {
format!("Failed to create directory for script with children: {}", new_dir.display())
})?;
// Determine the init file name based on class
let init_name = match class_name.as_str() {
"ModuleScript" => "init.luau",
"Script" => "init.server.luau",
"LocalScript" => "init.local.luau",
_ => "init.luau",
};
// Move the script content to init file
let init_path = new_dir.join(init_name);
fs::write(&init_path, source.as_bytes()).with_context(|| {
format!("Failed to write init file: {}", init_path.display())
})?;
// Remove the old standalone file
if existing_path.exists() && existing_path != init_path {
fs::remove_file(existing_path).with_context(|| {
format!("Failed to remove old standalone script: {}", existing_path.display())
})?;
}
log::info!(
"Syncback: Converted standalone {} to directory format at {}",
class_name,
new_dir.display()
);
new_dir
};
// Filter duplicate children

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@ -294,9 +294,10 @@ fn dir_model_sync_removing_children_preserves_directory() {
// =============================================================================
/// Test: Standalone ModuleScript receives sync WITH children
/// Expected: Standalone format preserved (no directory created)
/// Expected: Standalone converted to directory format when children are added
/// Standalone scripts cannot have children in Rojo's file format.
#[test]
fn standalone_module_sync_adding_children_preserves_standalone() {
fn standalone_module_sync_adding_children_converts_to_directory() {
run_serve_test("syncback_format_transitions", |session, _redactions| {
let info = session.get_api_rojo().unwrap();
let root_id = info.root_instance_id;
@ -332,21 +333,24 @@ fn standalone_module_sync_adding_children_preserves_standalone() {
);
send_write_request(&session, &info.session_id, rs_id, added);
// Standalone file should still exist
assert_file_exists(&standalone_file, "Standalone file should be preserved");
// Standalone file should be removed (converted to directory)
assert_not_exists(&standalone_file, "Standalone file should be removed after conversion");
// No directory should be created (format preserved)
// Note: This is the conservative approach - format transitions only via CLI syncback
assert_not_exists(
&dir_path,
"Directory should NOT be created for existing standalone file",
);
// Directory should be created with init file
assert_directory_exists(&dir_path, "Directory should be created for script with children");
let init_file = dir_path.join("init.luau");
assert_file_exists(&init_file, "init.luau should exist");
// Child should exist in the directory
let child_file = dir_path.join("NewChild.luau");
assert_file_exists(&child_file, "Child module should be created");
});
}
/// Test: Standalone Script receives sync WITH children
/// Test: Standalone Script receives sync WITH children - converts to directory format
/// Standalone scripts cannot have children in Rojo's file format.
#[test]
fn standalone_script_sync_adding_children_preserves_standalone() {
fn standalone_script_sync_adding_children_converts_to_directory() {
run_serve_test("syncback_format_transitions", |session, _redactions| {
let info = session.get_api_rojo().unwrap();
let root_id = info.root_instance_id;
@ -382,20 +386,25 @@ fn standalone_script_sync_adding_children_preserves_standalone() {
);
send_write_request(&session, &info.session_id, rs_id, added);
// Standalone file should still exist
assert_file_exists(&standalone_file, "Standalone file should be preserved");
// Standalone file should be removed (converted to directory)
assert_not_exists(&standalone_file, "Standalone file should be removed after conversion");
// No directory should be created
assert_not_exists(
&dir_path,
"Directory should NOT be created for existing standalone file",
);
// Directory should be created with init file
assert_directory_exists(&dir_path, "Directory should be created for script with children");
let init_file = dir_path.join("init.server.luau");
assert_file_exists(&init_file, "init.server.luau should exist");
// Child should exist in the directory
let child_file = dir_path.join("Handler.luau");
assert_file_exists(&child_file, "Child module should be created");
});
}
/// Test: Standalone LocalScript receives sync WITH children
/// Test: Standalone LocalScript receives sync WITH children - converts to directory format
/// When a standalone script receives children, it must be converted to directory format
/// because standalone scripts cannot have children in Rojo's file format.
#[test]
fn standalone_localscript_sync_adding_children_preserves_standalone() {
fn standalone_localscript_sync_adding_children_converts_to_directory() {
run_serve_test("syncback_format_transitions", |session, _redactions| {
let info = session.get_api_rojo().unwrap();
let root_id = info.root_instance_id;
@ -431,14 +440,17 @@ fn standalone_localscript_sync_adding_children_preserves_standalone() {
);
send_write_request(&session, &info.session_id, rs_id, added);
// Standalone file should still exist
assert_file_exists(&standalone_file, "Standalone file should be preserved");
// Standalone file should be removed (converted to directory)
assert_not_exists(&standalone_file, "Standalone file should be removed after conversion");
// No directory should be created
assert_not_exists(
&dir_path,
"Directory should NOT be created for existing standalone file",
);
// Directory should be created with init file
assert_directory_exists(&dir_path, "Directory should be created for script with children");
let init_file = dir_path.join("init.local.luau");
assert_file_exists(&init_file, "init.local.luau should exist");
// Child should exist in the directory
let child_file = dir_path.join("UIComponent.luau");
assert_file_exists(&child_file, "Child module should be created");
});
}
@ -1019,9 +1031,11 @@ fn scripts_only_mode_script_preserves_directory() {
});
}
/// Test: scriptsOnlyMode - Standalone module preserves format
/// Test: scriptsOnlyMode - Standalone module converts to directory when children added
/// Even in scriptsOnlyMode, standalone scripts must convert to directory format
/// when children are added, because standalone scripts cannot have children.
#[test]
fn scripts_only_mode_standalone_module_preserved() {
fn scripts_only_mode_standalone_module_converts_to_directory() {
run_serve_test("syncback_scripts_only", |session, _redactions| {
let info = session.get_api_rojo().unwrap();
let root_id = info.root_instance_id;
@ -1057,11 +1071,13 @@ fn scripts_only_mode_standalone_module_preserved() {
);
send_write_request(&session, &info.session_id, sss_id, added);
// Standalone should be preserved
assert_file_exists(&standalone, "Standalone preserved");
// Standalone should be removed (converted to directory)
assert_not_exists(&standalone, "Standalone removed after children sync");
// No directory should be created (even with children)
assert_not_exists(&dir_path, "Directory should NOT be created");
// Directory should be created
assert_directory_exists(&dir_path, "Directory created for script with children");
let init_file = dir_path.join("init.luau");
assert_file_exists(&init_file, "init.luau should exist");
});
}
@ -2017,6 +2033,7 @@ fn sync_name_with_dots() {
}
/// Test: Sync standalone then immediately sync directory version
/// When children are added, standalone must convert to directory format.
#[test]
fn sync_standalone_then_directory_format() {
run_serve_test("syncback_format_transitions", |session, _redactions| {
@ -2033,10 +2050,11 @@ fn sync_standalone_then_directory_format() {
let src_path = session.path().join("src");
let standalone = src_path.join("StandaloneModule.luau");
let dir_path = src_path.join("StandaloneModule");
assert_file_exists(&standalone, "Standalone exists initially");
// First sync - no children (standalone format)
// First sync - no children (standalone format preserved)
let added1 = make_added_instance(
rs_id,
"StandaloneModule",
@ -2046,7 +2064,10 @@ fn sync_standalone_then_directory_format() {
);
send_write_request(&session, &info.session_id, rs_id, added1);
// Second sync - with children (would be directory if new)
// Standalone should still exist after sync without children
assert_file_exists(&standalone, "Standalone preserved after sync without children");
// Second sync - with children (converts to directory)
let added2 = make_added_instance(
rs_id,
"StandaloneModule",
@ -2061,8 +2082,13 @@ fn sync_standalone_then_directory_format() {
);
send_write_request(&session, &info.session_id, rs_id, added2);
// Standalone should still exist (format preserved)
assert_file_exists(&standalone, "Standalone preserved after children sync");
// Standalone should be removed (converted to directory)
assert_not_exists(&standalone, "Standalone removed after children sync");
// Directory should now exist
assert_directory_exists(&dir_path, "Directory created after children sync");
let init_file = dir_path.join("init.luau");
assert_file_exists(&init_file, "init.luau should exist");
});
}