Struct MemoryConfigEnvironment 

pub struct MemoryConfigEnvironment { /* private fields */ }

In-memory implementation of ConfigEnvironment for testing.

Provides complete isolation from the real environment:

• Injected paths instead of environment variables
• In-memory file storage instead of real filesystem
• Injectable environment variables via with_env_var() (default: no vars set)

Example

use crate::config::MemoryConfigEnvironment;

let env = MemoryConfigEnvironment::new()
    .with_unified_config_path("/test/config/ralph-workflow.toml")
    .with_prompt_path("/test/repo/PROMPT.md")
    .with_file("/test/repo/existing.txt", "content")
    .with_env_var("RALPH_DEVELOPER_ITERS", "10");

// Write a file
env.write_file(Path::new("/test/new.txt"), "new content")?;

// Verify it was written
assert!(env.was_written(Path::new("/test/new.txt")));
assert_eq!(env.get_file(Path::new("/test/new.txt")), Some("new content".to_string()));

Implementations

impl MemoryConfigEnvironment

pub fn new() -> Self

Create a new memory environment with no paths configured.

pub fn with_unified_config_path<P: Into<PathBuf>>(self, path: P) -> Self

Set the unified config path.

pub fn with_local_config_path<P: Into<PathBuf>>(self, path: P) -> Self

Set the local config path.

pub fn with_prompt_path<P: Into<PathBuf>>(self, path: P) -> Self

Set the PROMPT.md path.

pub fn with_file<P: Into<PathBuf>, S: Into<String>>( self, path: P, content: S, ) -> Self

Pre-populate a file in memory.

Panics

Panics if the RwLock is poisoned.

pub fn with_worktree_root<P: Into<PathBuf>>(self, path: P) -> Self

Set the worktree root path for testing git worktree scenarios.

pub fn with_env_var( self, key: impl Into<String>, value: impl Into<String>, ) -> Self

Inject an environment variable for testing.

Provides per-test env isolation without mutating the real process environment. Use this instead of std::env::set_var to avoid #[serial] requirements.

Example

let env = MemoryConfigEnvironment::new()
    .with_env_var("RALPH_DEVELOPER_ITERS", "42")
    .with_env_var("RALPH_ISOLATION_MODE", "false");

pub fn get_file(&self, path: &Path) -> Option<String>

Get the contents of a file (for test assertions).

Panics

Panics if the RwLock is poisoned.

pub fn was_written(&self, path: &Path) -> bool

Check if a file was written (for test assertions).

Panics

Panics if the RwLock is poisoned.

Trait Implementations

impl Clone for MemoryConfigEnvironment

fn clone(&self) -> MemoryConfigEnvironment

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl ConfigEnvironment for MemoryConfigEnvironment

fn get_env_var(&self, key: &str) -> Option<String>

Returns an injected env var from the in-memory map.

Returns None for any key not explicitly set via with_env_var(), providing complete isolation from the real process environment.

fn unified_config_path(&self) -> Option<PathBuf>

Get the path to the unified config file.

fn local_config_path(&self) -> Option<PathBuf>

Get the path to the local config file.

fn prompt_path(&self) -> PathBuf

Get the path to the PROMPT.md file.

fn file_exists(&self, path: &Path) -> bool

Check if a file exists at the given path.

fn read_file(&self, path: &Path) -> Result<String>

Read the contents of a file.

fn write_file(&self, path: &Path, content: &str) -> Result<()>

Write content to a file, creating parent directories if needed.

fn create_dir_all(&self, path: &Path) -> Result<()>

Create directories recursively.

fn worktree_root(&self) -> Option<PathBuf>

Get the canonical root of the git repository, even from a worktree.

impl Debug for MemoryConfigEnvironment

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for MemoryConfigEnvironment

fn default() -> MemoryConfigEnvironment

Returns the “default value” for a type.