helix/helix-term/tests/lsp.rs

#[cfg(all(feature = "integration", unix))] // Keep cfg for consistency, though it won't be an integration test
mod test {
    use std::{fs, path::PathBuf, os::unix::fs::symlink};
    use tempfile::tempdir;
    use indoc::indoc;
    use helix_lsp::lsp::Url; // Only Url needed for this simplified test

    // Note: This is no longer an async tokio test.
    // Note: This does not use AppBuilder or Application.
    #[test]
    fn verify_symlink_canonicalization_for_uri() -> anyhow::Result<()> {
        println!("--- Test verify_symlink_canonicalization_for_uri started ---");

        // 1. Create a temporary directory for test files.
        let temp_dir = tempdir()?;
        let dir_path = temp_dir.path();
        println!("Temporary directory created: {:?}", dir_path);

        // 2. Inside this directory:
        //    a. Create original_file.py
        let original_file_path = dir_path.join("original_file.py");
        let python_content = indoc! {r#"
            def my_function():
                pass

            my_function()
        "#};
        fs::write(&original_file_path, python_content)?;
        println!("original_file.py created at: {:?}", original_file_path);

        //    b. Create a symlink linked_file.py pointing to original_file.py
        let linked_file_path = dir_path.join("linked_file.py");
        symlink(&original_file_path, &linked_file_path)?;
        println!("linked_file.py created at: {:?}, pointing to {:?}", linked_file_path, original_file_path);

        // Core Logic Verification:
        // Get the canonical path for both the original and the symlinked file.
        let canonical_original_path = original_file_path.canonicalize()?;
        let canonical_linked_path = linked_file_path.canonicalize()?;
        println!("Canonical original path: {:?}", canonical_original_path);
        println!("Canonical linked path: {:?}", canonical_linked_path);

        // Assert that the canonical paths are the same.
        assert_eq!(canonical_original_path, canonical_linked_path, "Canonical paths of original and symlink should be identical.");
        println!("Assertion 1 passed: Canonical paths are identical.");

        // Convert these canonical paths to file URIs.
        let uri_from_original = Url::from_file_path(canonical_original_path).map_err(|_| anyhow::anyhow!("Failed to create URI from original path"))?;
        let uri_from_linked = Url::from_file_path(canonical_linked_path).map_err(|_| anyhow::anyhow!("Failed to create URI from linked path"))?;
        println!("URI from original's canonical path: {:?}", uri_from_original);
        println!("URI from linked file's canonical path: {:?}", uri_from_linked);
        
        // Assert that the URIs are the same.
        assert_eq!(uri_from_original, uri_from_linked, "URIs from canonical paths should be identical.");
        println!("Assertion 2 passed: URIs from canonical paths are identical.");
        
        // Also, check if creating a URI from the non-canonical symlink path,
        // and then canonicalizing the path from *that* URI (if possible, though Url doesn't directly do that),
        // would match. The key is that `helix_stdx::path::canonicalize` should be used *before* Uri creation
        // as per the original subtask that modified `convert_url_to_uri`.

        // The original change was: Uri::File(helix_stdx::path::canonicalize(path).into())
        // So, if we simulate this:
        // 1. Path comes from url.to_file_path() - this would be /path/to/linked_file.py
        // 2. Then helix_stdx::path::canonicalize is applied to it.
        
        let path_from_symlink_url = linked_file_path; // Simulating url.to_file_path() for the symlink
        let canonicalized_path_for_uri_construction = helix_stdx::path::canonicalize(path_from_symlink_url).map_err(|e| anyhow::anyhow!("helix_stdx::path::canonicalize failed: {}",e))?;
        println!("Path from symlink after helix_stdx::path::canonicalize: {:?}", canonicalized_path_for_uri_construction);

        assert_eq!(canonicalized_path_for_uri_construction, canonical_original_path, "helix_stdx::path::canonicalize(symlink_path) should yield original's canonical path.");
        println!("Assertion 3 passed: helix_stdx::path::canonicalize(symlink_path) is correct.");

        let constructed_uri = Url::from_file_path(canonicalized_path_for_uri_construction).map_err(|_| anyhow::anyhow!("Failed to create URI from stdx canonicalized path"))?;
        assert_eq!(constructed_uri, uri_from_original, "URI constructed using helix_stdx::path::canonicalize should match original's canonical URI.");
        println!("Assertion 4 passed: Final URI construction matches.");


        // Clean up the temporary directory
        temp_dir.close()?;
        println!("--- Test verify_symlink_canonicalization_for_uri finished ---");
        Ok(())
    }
}