srenblad/rust-fatfs
1
0
Fork 0
forked from M-Labs/rust-fatfs
Code Pull Requests Activity

Add more format_volume tests and simlify code

Browse Source
This commit is contained in:
Rafał Harabień 2018-12-05 21:10:59 +01:00 committed by Rafał
parent e8a313ac4c
commit fd89185461
3 changed files with 95 additions and 58 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

92
src/fs.rs
View File

@ -1132,14 +1132,14 @@ pub struct FormatOptions {
_end: [u8;0],
}
const KB: u32 = 1024;
const MB: u32 = KB * 1024;
const GB: u32 = MB * 1024;
const KB: u64 = 1024;
const MB: u64 = KB * 1024;
const GB: u64 = MB * 1024;
fn determine_fat_type(total_bytes: u64) -> FatType {
if total_bytes < 4*MB as u64 {
if total_bytes < 4 * MB {
FatType::Fat12
} else if total_bytes < 512*MB as u64 {
} else if total_bytes < 512 * MB {
FatType::Fat16
} else {
FatType::Fat32
@ -1148,27 +1148,27 @@ fn determine_fat_type(total_bytes: u64) -> FatType {
fn determine_bytes_per_cluster(total_bytes: u64, fat_type: FatType, bytes_per_sector: u16) -> u32 {
let bytes_per_cluster = match fat_type {
FatType::Fat12 => (total_bytes.next_power_of_two() / MB as u64) as u32 * 512,
FatType::Fat12 => (total_bytes.next_power_of_two() / MB * 512) as u32,
FatType::Fat16 => {
if total_bytes <= 16 * MB as u64 {
1 * KB
} else if total_bytes <= 128 * MB as u64 {
2 * KB
if total_bytes <= 16 * MB {
1 * KB as u32
} else if total_bytes <= 128 * MB {
2 * KB as u32
} else {
(total_bytes.next_power_of_two() / (64 * MB as u64)) as u32 * KB
(total_bytes.next_power_of_two() / (64 * MB) * KB) as u32
}
},
FatType::Fat32 => {
if total_bytes <= 260 * MB as u64 {
if total_bytes <= 260 * MB {
512
} else if total_bytes <= 8 * GB as u64 {
4 * KB
} else if total_bytes <= 8 * GB {
4 * KB as u32
} else {
(total_bytes.next_power_of_two() / (2 * GB as u64)) as u32 * KB
(total_bytes.next_power_of_two() / (2 * GB) * KB) as u32
}
},
};
const MAX_CLUSTER_SIZE: u32 = 32*KB;
const MAX_CLUSTER_SIZE: u32 = 32 * KB as u32;
debug_assert!(bytes_per_cluster.is_power_of_two());
cmp::min(cmp::max(bytes_per_cluster, bytes_per_sector as u32), MAX_CLUSTER_SIZE)
}
@ -1404,52 +1404,52 @@ mod tests {
#[test]
fn test_determine_fat_type() {
assert_eq!(determine_fat_type(3 * MB as u64), FatType::Fat12);
assert_eq!(determine_fat_type(4 * MB as u64), FatType::Fat16);
assert_eq!(determine_fat_type(511 * MB as u64), FatType::Fat16);
assert_eq!(determine_fat_type(512 * MB as u64), FatType::Fat32);
assert_eq!(determine_fat_type(3 * MB), FatType::Fat12);
assert_eq!(determine_fat_type(4 * MB), FatType::Fat16);
assert_eq!(determine_fat_type(511 * MB), FatType::Fat16);
assert_eq!(determine_fat_type(512 * MB), FatType::Fat32);
}
#[test]
fn test_determine_bytes_per_cluster_fat12() {
assert_eq!(determine_bytes_per_cluster(1 * MB as u64 + 0, FatType::Fat12, 512), 512);
assert_eq!(determine_bytes_per_cluster(1 * MB as u64 + 1, FatType::Fat12, 512), 1024);
assert_eq!(determine_bytes_per_cluster(1 * MB as u64, FatType::Fat12, 4096), 4096);
assert_eq!(determine_bytes_per_cluster(1 * MB + 0, FatType::Fat12, 512), 512);
assert_eq!(determine_bytes_per_cluster(1 * MB + 1, FatType::Fat12, 512), 1024);
assert_eq!(determine_bytes_per_cluster(1 * MB, FatType::Fat12, 4096), 4096);
}
#[test]
fn test_determine_bytes_per_cluster_fat16() {
assert_eq!(determine_bytes_per_cluster(1 * MB as u64, FatType::Fat16, 512), 1 * KB);
assert_eq!(determine_bytes_per_cluster(1 * MB as u64, FatType::Fat16, 4 * KB as u16), 4 * KB);
assert_eq!(determine_bytes_per_cluster(16 * MB as u64 + 0, FatType::Fat16, 512), 1 * KB);
assert_eq!(determine_bytes_per_cluster(16 * MB as u64 + 1, FatType::Fat16, 512), 2 * KB);
assert_eq!(determine_bytes_per_cluster(128 * MB as u64 + 0, FatType::Fat16, 512), 2 * KB);
assert_eq!(determine_bytes_per_cluster(128 * MB as u64 + 1, FatType::Fat16, 512), 4 * KB);
assert_eq!(determine_bytes_per_cluster(256 * MB as u64 + 0, FatType::Fat16, 512), 4 * KB);
assert_eq!(determine_bytes_per_cluster(256 * MB as u64 + 1, FatType::Fat16, 512), 8 * KB);
assert_eq!(determine_bytes_per_cluster(512 * MB as u64 + 0, FatType::Fat16, 512), 8 * KB);
assert_eq!(determine_bytes_per_cluster(512 * MB as u64 + 1, FatType::Fat16, 512), 16 * KB);
assert_eq!(determine_bytes_per_cluster(1024 * MB as u64 + 0, FatType::Fat16, 512), 16 * KB);
assert_eq!(determine_bytes_per_cluster(1024 * MB as u64 + 1, FatType::Fat16, 512), 32 * KB);
assert_eq!(determine_bytes_per_cluster(99999 * MB as u64, FatType::Fat16, 512), 32 * KB);
assert_eq!(determine_bytes_per_cluster(1 * MB, FatType::Fat16, 512), 1 * KB as u32);
assert_eq!(determine_bytes_per_cluster(1 * MB, FatType::Fat16, 4 * KB as u16), 4 * KB as u32);
assert_eq!(determine_bytes_per_cluster(16 * MB + 0, FatType::Fat16, 512), 1 * KB as u32);
assert_eq!(determine_bytes_per_cluster(16 * MB + 1, FatType::Fat16, 512), 2 * KB as u32);
assert_eq!(determine_bytes_per_cluster(128 * MB + 0, FatType::Fat16, 512), 2 * KB as u32);
assert_eq!(determine_bytes_per_cluster(128 * MB + 1, FatType::Fat16, 512), 4 * KB as u32);
assert_eq!(determine_bytes_per_cluster(256 * MB + 0, FatType::Fat16, 512), 4 * KB as u32);
assert_eq!(determine_bytes_per_cluster(256 * MB + 1, FatType::Fat16, 512), 8 * KB as u32);
assert_eq!(determine_bytes_per_cluster(512 * MB + 0, FatType::Fat16, 512), 8 * KB as u32);
assert_eq!(determine_bytes_per_cluster(512 * MB + 1, FatType::Fat16, 512), 16 * KB as u32);
assert_eq!(determine_bytes_per_cluster(1024 * MB + 0, FatType::Fat16, 512), 16 * KB as u32);
assert_eq!(determine_bytes_per_cluster(1024 * MB + 1, FatType::Fat16, 512), 32 * KB as u32);
assert_eq!(determine_bytes_per_cluster(99999 * MB, FatType::Fat16, 512), 32 * KB as u32);
}
#[test]
fn test_determine_bytes_per_cluster_fat32() {
assert_eq!(determine_bytes_per_cluster(260 * MB as u64, FatType::Fat32, 512), 512);
assert_eq!(determine_bytes_per_cluster(260 * MB as u64, FatType::Fat32, 4 * KB as u16), 4 * KB);
assert_eq!(determine_bytes_per_cluster(260 * MB as u64 + 1, FatType::Fat32, 512), 4 * KB);
assert_eq!(determine_bytes_per_cluster(8 * GB as u64, FatType::Fat32, 512), 4 * KB);
assert_eq!(determine_bytes_per_cluster(8 * GB as u64 + 1, FatType::Fat32, 512), 8 * KB);
assert_eq!(determine_bytes_per_cluster(16 * GB as u64 + 0, FatType::Fat32, 512), 8 * KB);
assert_eq!(determine_bytes_per_cluster(16 * GB as u64 + 1, FatType::Fat32, 512), 16 * KB);
assert_eq!(determine_bytes_per_cluster(32 * GB as u64, FatType::Fat32, 512), 16 * KB);
assert_eq!(determine_bytes_per_cluster(32 * GB as u64 + 1, FatType::Fat32, 512), 32 * KB);
assert_eq!(determine_bytes_per_cluster(999 * GB as u64, FatType::Fat32, 512), 32 * KB);
assert_eq!(determine_bytes_per_cluster(260 * MB as u64, FatType::Fat32, 4 * KB as u16), 4 * KB as u32);
assert_eq!(determine_bytes_per_cluster(260 * MB as u64 + 1, FatType::Fat32, 512), 4 * KB as u32);
assert_eq!(determine_bytes_per_cluster(8 * GB as u64, FatType::Fat32, 512), 4 * KB as u32);
assert_eq!(determine_bytes_per_cluster(8 * GB as u64 + 1, FatType::Fat32, 512), 8 * KB as u32);
assert_eq!(determine_bytes_per_cluster(16 * GB as u64 + 0, FatType::Fat32, 512), 8 * KB as u32);
assert_eq!(determine_bytes_per_cluster(16 * GB as u64 + 1, FatType::Fat32, 512), 16 * KB as u32);
assert_eq!(determine_bytes_per_cluster(32 * GB as u64, FatType::Fat32, 512), 16 * KB as u32);
assert_eq!(determine_bytes_per_cluster(32 * GB as u64 + 1, FatType::Fat32, 512), 32 * KB as u32);
assert_eq!(determine_bytes_per_cluster(999 * GB as u64, FatType::Fat32, 512), 32 * KB as u32);
}
#[test]
fn test_determine_sectors_per_fat() {
assert_eq!(determine_sectors_per_fat(1 * MB / 512, 1, 2, 32, 1, FatType::Fat12), 6);
assert_eq!(determine_sectors_per_fat(1 * MB as u32 / 512, 1, 2, 32, 1, FatType::Fat12), 6);
}
}

59
tests/format.rs
View File

@ -7,8 +7,8 @@ use std::io::prelude::*;
use fscommon::BufStream;
const KB: u32 = 1024;
const MB: u32 = KB * 1024;
const KB: u64 = 1024;
const MB: u64 = KB * 1024;
const TEST_STR: &str = "Hi there Rust programmer!\n";
type FileSystem = fatfs::FileSystem<BufStream<io::Cursor<Vec<u8>>>>;
@ -18,12 +18,34 @@ fn basic_fs_test(fs: &FileSystem) {
let entries = root_dir.iter().map(|r| r.unwrap()).collect::<Vec<_>>();
assert_eq!(entries.len(), 0);
let mut file = root_dir.create_file("short.txt").expect("create file");
file.truncate().expect("truncate file");
file.write_all(&TEST_STR.as_bytes()).expect("write file");
let subdir1 = root_dir.create_dir("subdir1").expect("create_dir subdir1");
let subdir2 = root_dir.create_dir("subdir1/subdir2 with long name").expect("create_dir subdir2");
let entries = root_dir.iter().map(|r| r.unwrap()).collect::<Vec<_>>();
assert_eq!(entries.len(), 1);
let test_str = TEST_STR.repeat(1000);
{
let mut file = subdir2.create_file("test file name.txt").expect("create file");
file.truncate().expect("truncate file");
file.write_all(test_str.as_bytes()).expect("write file");
}
let mut file = root_dir.open_file("subdir1/subdir2 with long name/test file name.txt").unwrap();
let mut content = String::new();
file.read_to_string(&mut content).expect("read_to_string");
assert_eq!(content, test_str);
let filenames = root_dir.iter().map(|r| r.unwrap().file_name()).collect::<Vec<String>>();
assert_eq!(filenames, ["subdir1"]);
let filenames = subdir2.iter().map(|r| r.unwrap().file_name()).collect::<Vec<String>>();
assert_eq!(filenames, [".", "..", "test file name.txt"]);
subdir1.rename("subdir2 with long name/test file name.txt", &root_dir, "new-name.txt").expect("rename");
let filenames = subdir2.iter().map(|r| r.unwrap().file_name()).collect::<Vec<String>>();
assert_eq!(filenames, [".", ".."]);
let filenames = root_dir.iter().map(|r| r.unwrap().file_name()).collect::<Vec<String>>();
assert_eq!(filenames, ["subdir1", "new-name.txt"]);
}
fn test_format_fs(opts: fatfs::FormatOptions, total_bytes: u64) -> FileSystem {
@ -40,7 +62,7 @@ fn test_format_fs(opts: fatfs::FormatOptions, total_bytes: u64) -> FileSystem {
#[test]
fn test_format_1mb() {
let total_bytes = 1 * MB as u64;
let total_bytes = 1 * MB;
let mut opts: fatfs::FormatOptions = Default::default();
opts.total_sectors = (total_bytes / 512) as u32;
let fs = test_format_fs(opts, total_bytes);
@ -49,7 +71,7 @@ fn test_format_1mb() {
#[test]
fn test_format_8mb() {
let total_bytes = 8 * MB as u64;
let total_bytes = 8 * MB;
let mut opts: fatfs::FormatOptions = Default::default();
opts.total_sectors = (total_bytes / 512) as u32;
let fs = test_format_fs(opts, total_bytes);
@ -58,7 +80,7 @@ fn test_format_8mb() {
#[test]
fn test_format_50mb() {
let total_bytes = 50 * MB as u64;
let total_bytes = 50 * MB;
let mut opts: fatfs::FormatOptions = Default::default();
opts.total_sectors = (total_bytes / 512) as u32;
let fs = test_format_fs(opts, total_bytes);
@ -68,9 +90,24 @@ fn test_format_50mb() {
#[test]
fn test_format_512mb() {
let total_bytes = 2 * 1024 * MB as u64;
let total_bytes = 2 * 1024 * MB;
let mut opts: fatfs::FormatOptions = Default::default();
opts.total_sectors = (total_bytes / 512) as u32;
let fs = test_format_fs(opts, total_bytes);
assert_eq!(fs.fat_type(), fatfs::FatType::Fat32);
}
fn create_format_options(total_bytes: u64, bytes_per_sector: Option<u16>) -> fatfs::FormatOptions {
let mut opts: fatfs::FormatOptions = Default::default();
opts.total_sectors = (total_bytes / bytes_per_sector.unwrap_or(512) as u64) as u32;
opts.bytes_per_sector = bytes_per_sector;
opts
}
#[test]
fn test_format_512mb_4096sec() {
let total_bytes = 1 * 1024 * MB;
let opts = create_format_options(total_bytes, Some(1024));
let fs = test_format_fs(opts, total_bytes);
assert_eq!(fs.fat_type(), fatfs::FatType::Fat32);
}

2
tests/write.rs
View File

@ -76,7 +76,7 @@ fn test_write_long_file(fs: FileSystem) {
let root_dir = fs.root_dir();
let mut file = root_dir.open_file("long.txt").expect("open file");
file.truncate().unwrap();
let test_str = TEST_STR.repeat(100);
let test_str = TEST_STR.repeat(1000);
file.write_all(&test_str.as_bytes()).unwrap();
file.seek(io::SeekFrom::Start(0)).unwrap();
let mut buf = Vec::new();