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Add OsSystem support to mdtests (#16518)

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## Summary

This PR introduces a new mdtest option `system` that can either be
`in-memory` or `os`
where `in-memory` is the default.

The motivation for supporting `os` is so that we can write OS/system
specific tests
with mdtests. Specifically, I want to write mdtests for the module
resolver,
testing that module resolution is case sensitive. 

## Test Plan

I tested that the case-sensitive module resolver test start failing when
setting `system = "os"`
This commit is contained in:
Micha Reiser 2025-03-06 09:41:40 +00:00 • committed by GitHub
parent 48f906e06c
commit ce0018c3cb
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31 changed files with 541 additions and 229 deletions
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11
crates/ruff_db/src/system.rs
View file

@ -12,7 +12,7 @@ use std::error::Error;
use std::fmt::Debug;
use std::path::{Path, PathBuf};
use std::{fmt, io};
pub use test::{DbWithTestSystem, InMemorySystem, TestSystem};
pub use test::{DbWithTestSystem, DbWithWritableSystem, InMemorySystem, TestSystem};
use walk_directory::WalkDirectoryBuilder;
use crate::file_revision::FileRevision;
@ -161,6 +161,15 @@ pub trait System: Debug {
fn as_any_mut(&mut self) -> &mut dyn std::any::Any;
}
/// System trait for non-readonly systems.
pub trait WritableSystem: System {
/// Writes the given content to the file at the given path.
fn write_file(&self, path: &SystemPath, content: &str) -> Result<()>;
/// Creates a directory at `path` as well as any intermediate directories.
fn create_directory_all(&self, path: &SystemPath) -> Result<()>;
}
#[derive(Clone, Debug, Eq, PartialEq)]
pub struct Metadata {
revision: FileRevision,