299 lines
11 KiB
Rust
299 lines
11 KiB
Rust
extern crate env_logger;
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extern crate fatfs;
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extern crate fscommon;
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use std::fs;
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use std::io;
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use std::io::prelude::*;
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use std::str;
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use fatfs::FsOptions;
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use fscommon::BufStream;
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const FAT12_IMG: &str = "fat12.img";
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const FAT16_IMG: &str = "fat16.img";
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const FAT32_IMG: &str = "fat32.img";
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const IMG_DIR: &str = "resources";
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const TMP_DIR: &str = "tmp";
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const TEST_STR: &str = "Hi there Rust programmer!\n";
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const TEST_STR2: &str = "Rust is cool!\n";
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type FileSystem = fatfs::FileSystem<BufStream<fs::File>>;
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fn call_with_fs(f: &Fn(FileSystem) -> (), filename: &str, test_seq: u32) {
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let _ = env_logger::try_init();
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let img_path = format!("{}/{}", IMG_DIR, filename);
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let tmp_path = format!("{}/{}-{}", TMP_DIR, test_seq, filename);
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fs::create_dir(TMP_DIR).ok();
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fs::copy(&img_path, &tmp_path).unwrap();
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{
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let file = fs::OpenOptions::new().read(true).write(true).open(&tmp_path).unwrap();
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let buf_file = BufStream::new(file);
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let options = FsOptions::new().update_accessed_date(true);
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let fs = FileSystem::new(buf_file, options).unwrap();
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f(fs);
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}
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fs::remove_file(tmp_path).unwrap();
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}
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fn test_write_short_file(fs: FileSystem) {
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let root_dir = fs.root_dir();
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let mut file = root_dir.open_file("short.txt").expect("open file");
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file.truncate().unwrap();
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file.write_all(&TEST_STR.as_bytes()).unwrap();
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file.seek(io::SeekFrom::Start(0)).unwrap();
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let mut buf = Vec::new();
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file.read_to_end(&mut buf).unwrap();
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assert_eq!(TEST_STR, str::from_utf8(&buf).unwrap());
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}
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#[test]
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fn test_write_file_fat12() {
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call_with_fs(&test_write_short_file, FAT12_IMG, 1)
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}
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#[test]
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fn test_write_file_fat16() {
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call_with_fs(&test_write_short_file, FAT16_IMG, 1)
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}
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#[test]
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fn test_write_file_fat32() {
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call_with_fs(&test_write_short_file, FAT32_IMG, 1)
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}
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fn test_write_long_file(fs: FileSystem) {
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let root_dir = fs.root_dir();
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let mut file = root_dir.open_file("long.txt").expect("open file");
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file.truncate().unwrap();
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let test_str = TEST_STR.repeat(100);
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file.write_all(&test_str.as_bytes()).unwrap();
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file.seek(io::SeekFrom::Start(0)).unwrap();
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let mut buf = Vec::new();
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file.read_to_end(&mut buf).unwrap();
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assert_eq!(test_str, str::from_utf8(&buf).unwrap());
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file.seek(io::SeekFrom::Start(1234)).unwrap();
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file.truncate().unwrap();
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file.seek(io::SeekFrom::Start(0)).unwrap();
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buf.clear();
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file.read_to_end(&mut buf).unwrap();
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assert_eq!(&test_str[..1234], str::from_utf8(&buf).unwrap());
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}
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#[test]
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fn test_write_long_file_fat12() {
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call_with_fs(&test_write_long_file, FAT12_IMG, 2)
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}
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#[test]
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fn test_write_long_file_fat16() {
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call_with_fs(&test_write_long_file, FAT16_IMG, 2)
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}
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#[test]
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fn test_write_long_file_fat32() {
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call_with_fs(&test_write_long_file, FAT32_IMG, 2)
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}
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fn test_remove(fs: FileSystem) {
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let root_dir = fs.root_dir();
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assert!(root_dir.remove("very/long/path").is_err());
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let dir = root_dir.open_dir("very/long/path").unwrap();
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let mut names = dir.iter().map(|r| r.unwrap().file_name()).collect::<Vec<String>>();
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assert_eq!(names, [".", "..", "test.txt"]);
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root_dir.remove("very/long/path/test.txt").unwrap();
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names = dir.iter().map(|r| r.unwrap().file_name()).collect::<Vec<String>>();
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assert_eq!(names, [".", ".."]);
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assert!(root_dir.remove("very/long/path").is_ok());
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names = root_dir.iter().map(|r| r.unwrap().file_name()).collect::<Vec<String>>();
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assert_eq!(names, ["long.txt", "short.txt", "very", "very-long-dir-name"]);
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root_dir.remove("long.txt").unwrap();
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names = root_dir.iter().map(|r| r.unwrap().file_name()).collect::<Vec<String>>();
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assert_eq!(names, ["short.txt", "very", "very-long-dir-name"]);
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}
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#[test]
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fn test_remove_fat12() {
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call_with_fs(&test_remove, FAT12_IMG, 3)
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}
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#[test]
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fn test_remove_fat16() {
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call_with_fs(&test_remove, FAT16_IMG, 3)
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}
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#[test]
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fn test_remove_fat32() {
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call_with_fs(&test_remove, FAT32_IMG, 3)
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}
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fn test_create_file(fs: FileSystem) {
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let root_dir = fs.root_dir();
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let dir = root_dir.open_dir("very/long/path").unwrap();
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let mut names = dir.iter().map(|r| r.unwrap().file_name()).collect::<Vec<String>>();
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assert_eq!(names, [".", "..", "test.txt"]);
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{
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// test some invalid names
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assert!(root_dir.create_file("very/long/path/:").is_err());
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assert!(root_dir.create_file("very/long/path/\0").is_err());
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// create file
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let mut file = root_dir.create_file("very/long/path/new-file-with-long-name.txt").unwrap();
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file.write_all(&TEST_STR.as_bytes()).unwrap();
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}
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// check for dir entry
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names = dir.iter().map(|r| r.unwrap().file_name()).collect::<Vec<String>>();
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assert_eq!(names, [".", "..", "test.txt", "new-file-with-long-name.txt"]);
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names = dir.iter().map(|r| r.unwrap().short_file_name()).collect::<Vec<String>>();
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assert_eq!(names, [".", "..", "TEST.TXT", "NEW-FI~1.TXT"]);
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{
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// check contents
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let mut file = root_dir.open_file("very/long/path/new-file-with-long-name.txt").unwrap();
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let mut content = String::new();
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file.read_to_string(&mut content).unwrap();
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assert_eq!(&content, &TEST_STR);
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}
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// Create enough entries to allocate next cluster
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for i in 0..512 / 32 {
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let name = format!("test{}", i);
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dir.create_file(&name).unwrap();
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}
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names = dir.iter().map(|r| r.unwrap().file_name()).collect::<Vec<String>>();
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assert_eq!(names.len(), 4 + 512 / 32);
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// check creating existing file opens it
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{
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let mut file = root_dir.create_file("very/long/path/new-file-with-long-name.txt").unwrap();
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let mut content = String::new();
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file.read_to_string(&mut content).unwrap();
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assert_eq!(&content, &TEST_STR);
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}
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// check using create_file with existing directory fails
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assert!(root_dir.create_file("very").is_err());
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}
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#[test]
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fn test_create_file_fat12() {
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call_with_fs(&test_create_file, FAT12_IMG, 4)
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}
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#[test]
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fn test_create_file_fat16() {
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call_with_fs(&test_create_file, FAT16_IMG, 4)
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}
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#[test]
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fn test_create_file_fat32() {
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call_with_fs(&test_create_file, FAT32_IMG, 4)
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}
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fn test_create_dir(fs: FileSystem) {
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let root_dir = fs.root_dir();
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let parent_dir = root_dir.open_dir("very/long/path").unwrap();
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let mut names = parent_dir.iter().map(|r| r.unwrap().file_name()).collect::<Vec<String>>();
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assert_eq!(names, [".", "..", "test.txt"]);
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{
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let subdir = root_dir.create_dir("very/long/path/new-dir-with-long-name").unwrap();
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names = subdir.iter().map(|r| r.unwrap().file_name()).collect::<Vec<String>>();
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assert_eq!(names, [".", ".."]);
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}
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// check if new entry is visible in parent
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names = parent_dir.iter().map(|r| r.unwrap().file_name()).collect::<Vec<String>>();
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assert_eq!(names, [".", "..", "test.txt", "new-dir-with-long-name"]);
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{
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// Check if new directory can be opened and read
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let subdir = root_dir.open_dir("very/long/path/new-dir-with-long-name").unwrap();
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names = subdir.iter().map(|r| r.unwrap().file_name()).collect::<Vec<String>>();
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assert_eq!(names, [".", ".."]);
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}
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// Check if '.' is alias for new directory
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{
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let subdir = root_dir.open_dir("very/long/path/new-dir-with-long-name/.").unwrap();
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names = subdir.iter().map(|r| r.unwrap().file_name()).collect::<Vec<String>>();
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assert_eq!(names, [".", ".."]);
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}
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// Check if '..' is alias for parent directory
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{
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let subdir = root_dir.open_dir("very/long/path/new-dir-with-long-name/..").unwrap();
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names = subdir.iter().map(|r| r.unwrap().file_name()).collect::<Vec<String>>();
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assert_eq!(names, [".", "..", "test.txt", "new-dir-with-long-name"]);
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}
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// check if creating existing directory returns it
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{
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let subdir = root_dir.create_dir("very").unwrap();
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names = subdir.iter().map(|r| r.unwrap().file_name()).collect::<Vec<String>>();
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assert_eq!(names, [".", "..", "long"]);
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}
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// check using create_dir with existing file fails
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assert!(root_dir.create_dir("very/long/path/test.txt").is_err());
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}
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#[test]
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fn test_create_dir_fat12() {
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call_with_fs(&test_create_dir, FAT12_IMG, 5)
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}
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#[test]
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fn test_create_dir_fat16() {
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call_with_fs(&test_create_dir, FAT16_IMG, 5)
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}
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#[test]
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fn test_create_dir_fat32() {
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call_with_fs(&test_create_dir, FAT32_IMG, 5)
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}
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fn test_rename_file(fs: FileSystem) {
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let root_dir = fs.root_dir();
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let parent_dir = root_dir.open_dir("very/long/path").unwrap();
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let entries = parent_dir.iter().map(|r| r.unwrap()).collect::<Vec<_>>();
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let names = entries.iter().map(|r| r.file_name()).collect::<Vec<_>>();
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assert_eq!(names, [".", "..", "test.txt"]);
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assert_eq!(entries[2].len(), 14);
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let stats = fs.stats().unwrap();
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parent_dir.rename("test.txt", &parent_dir, "new-long-name.txt").unwrap();
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let entries = parent_dir.iter().map(|r| r.unwrap()).collect::<Vec<_>>();
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let names = entries.iter().map(|r| r.file_name()).collect::<Vec<_>>();
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assert_eq!(names, [".", "..", "new-long-name.txt"]);
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assert_eq!(entries[2].len(), TEST_STR2.len() as u64);
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let mut file = parent_dir.open_file("new-long-name.txt").unwrap();
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let mut buf = Vec::new();
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file.read_to_end(&mut buf).unwrap();
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assert_eq!(str::from_utf8(&buf).unwrap(), TEST_STR2);
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parent_dir.rename("new-long-name.txt", &root_dir, "moved-file.txt").unwrap();
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let entries = root_dir.iter().map(|r| r.unwrap()).collect::<Vec<_>>();
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let names = entries.iter().map(|r| r.file_name()).collect::<Vec<_>>();
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assert_eq!(names, ["long.txt", "short.txt", "very", "very-long-dir-name", "moved-file.txt"]);
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assert_eq!(entries[4].len(), TEST_STR2.len() as u64);
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let mut file = root_dir.open_file("moved-file.txt").unwrap();
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let mut buf = Vec::new();
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file.read_to_end(&mut buf).unwrap();
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assert_eq!(str::from_utf8(&buf).unwrap(), TEST_STR2);
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assert!(root_dir.rename("moved-file.txt", &root_dir, "short.txt").is_err());
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let entries = root_dir.iter().map(|r| r.unwrap()).collect::<Vec<_>>();
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let names = entries.iter().map(|r| r.file_name()).collect::<Vec<_>>();
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assert_eq!(names, ["long.txt", "short.txt", "very", "very-long-dir-name", "moved-file.txt"]);
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assert!(root_dir.rename("moved-file.txt", &root_dir, "moved-file.txt").is_ok());
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let new_stats = fs.stats().unwrap();
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assert_eq!(new_stats.free_clusters(), stats.free_clusters());
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}
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#[test]
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fn test_rename_file_fat12() {
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call_with_fs(&test_rename_file, FAT12_IMG, 6)
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}
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#[test]
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fn test_rename_file_fat16() {
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call_with_fs(&test_rename_file, FAT16_IMG, 6)
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}
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#[test]
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fn test_rename_file_fat32() {
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call_with_fs(&test_rename_file, FAT32_IMG, 6)
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}
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