129 lines
4.3 KiB
Rust
129 lines
4.3 KiB
Rust
use bakare::backup;
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use bakare::restore;
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use bakare::source::TempSource;
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use bakare::error::BakareError;
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use bakare::repository::Repository;
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use std::fs::File;
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use std::io::Read;
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use std::path::Path;
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use tempfile::tempdir;
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use walkdir::WalkDir;
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#[test]
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fn restore_backed_up_files() -> Result<(), BakareError> {
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let source = TempSource::new()?;
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source.write_text_to_file("first", "some contents")?;
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source.write_text_to_file("second", "some contents")?;
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source.write_text_to_file("third", "some other contents")?;
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assert_same_after_restore(source.path())
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}
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#[test]
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fn restore_older_version_of_file() -> Result<(), BakareError> {
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let source = TempSource::new()?;
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let repository_path = tempdir()?.into_path();
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let restore_repository = Repository::open(repository_path.as_path())?;
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let relative_path_text = "some path";
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let file_path = source.file_path(relative_path_text);
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let new_contents = "totally new contents";
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let restore_target = tempdir()?;
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let restore_engine = restore::Engine::new(&restore_repository, &restore_target.path())?;
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let old_contents = "some old contents";
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{
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let mut backup_repository = Repository::open(repository_path.as_path())?;
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let mut backup_engine = backup::Engine::new(source.path(), &mut backup_repository);
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source.write_text_to_file(relative_path_text, old_contents)?;
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backup_engine.backup()?;
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}
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let backup_repository = Repository::open(repository_path.as_path())?;
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let file_id = backup_repository.item(&file_path);
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assert!(file_id.is_some());
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let file_id = file_id.unwrap();
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let old_version = file_id.version();
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{
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let mut backup_repository = Repository::open(repository_path.as_path())?;
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let mut backup_engine = backup::Engine::new(source.path(), &mut backup_repository);
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source.write_text_to_file(relative_path_text, new_contents)?;
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backup_engine.backup()?;
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}
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restore_engine.restore_as_of_version(&file_id, old_version)?;
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assert_target_file_contents(restore_target.path(), relative_path_text, old_contents)
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}
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fn assert_target_file_contents(target: &Path, filename: &str, expected_contents: &str) -> Result<(), BakareError> {
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let restored_path = target.join(filename);
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let mut actual_contents = String::new();
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File::open(restored_path)?.read_to_string(&mut actual_contents)?;
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assert_eq!(expected_contents, actual_contents);
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Ok(())
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}
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fn assert_same_after_restore(source_path: &Path) -> Result<(), BakareError> {
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let repository_path = tempdir()?.into_path();
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let restore_target = tempdir()?.into_path();
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assert_ne!(source_path, repository_path);
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assert_ne!(repository_path, restore_target);
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{
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let mut backup_repository = Repository::open(repository_path.as_path())?;
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let mut backup_engine = backup::Engine::new(source_path, &mut backup_repository);
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backup_engine.backup()?;
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}
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{
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let restore_repository = Repository::open(repository_path.as_path())?;
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let restore_engine = restore::Engine::new(&restore_repository, &restore_target)?;
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restore_engine.restore_all()?;
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}
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assert_directory_trees_have_same_contents(source_path, restore_target.as_path())?;
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Ok(())
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}
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fn assert_directory_trees_have_same_contents(left: &Path, right: &Path) -> Result<(), BakareError> {
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let left_files = get_sorted_files_recursively(left)?;
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let right_files = get_sorted_files_recursively(right)?;
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let pairs = left_files.iter().zip(right_files);
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for (l, r) in pairs {
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assert_eq!(l.file_name(), r.file_name());
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let mut fl = File::open(l)?;
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let mut fr = File::open(r)?;
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let mut bl = vec![];
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let mut br = vec![];
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fl.read_to_end(&mut bl)?;
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fr.read_to_end(&mut br)?;
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assert_eq!(bl, bl);
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}
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Ok(())
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}
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fn get_sorted_files_recursively(path: &Path) -> Result<Vec<Box<Path>>, BakareError> {
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let walker = WalkDir::new(path).sort_by(|a, b| a.file_name().cmp(b.file_name()));
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let mut result = vec![];
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for maybe_entry in walker {
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let entry = maybe_entry?;
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if entry.path() == path {
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continue;
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}
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if entry.path().is_file() {
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result.push(Box::from(entry.path()));
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}
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}
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Ok(result)
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}
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// TODO: restore latest version by default
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// TODO: deduplicate data
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