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Add FAT reading tests

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This commit is contained in:
Rafał Harabień 2018-06-12 01:16:35 +02:00
parent 2304b13ec4
commit b1894a435e
1 changed files with 64 additions and 1 deletions
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65
src/table.rs
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@ -15,7 +15,7 @@ type Fat32 = Fat<u32>;
const RESERVED_FAT_ENTRIES: u32 = 2;
#[derive(Debug, Clone, Copy)]
#[derive(Copy, Clone, Eq, PartialEq, Debug)]
enum FatValue {
Free,
Data(u32),
@ -387,3 +387,66 @@ impl <'a, 'b> Iterator for ClusterIterator<'a, 'b> {
self.cluster.map(|n| Ok(n))
}
}
#[cfg(test)]
mod tests {
use super::*;
fn test_fat<T: ReadSeek>(fat_type: FatType, mut cur: T) {
// based on cluster maps from Wikipedia:
// https://en.wikipedia.org/wiki/Design_of_the_FAT_file_system#Cluster_map
assert_eq!(read_fat(&mut cur, fat_type, 1).unwrap(), FatValue::EndOfChain);
assert_eq!(read_fat(&mut cur, fat_type, 4).unwrap(), FatValue::Data(5));
assert_eq!(read_fat(&mut cur, fat_type, 5).unwrap(), FatValue::Data(6));
assert_eq!(read_fat(&mut cur, fat_type, 8).unwrap(), FatValue::EndOfChain);
assert_eq!(read_fat(&mut cur, fat_type, 9).unwrap(), FatValue::Data(0xA));
assert_eq!(read_fat(&mut cur, fat_type, 0xA).unwrap(), FatValue::Data(0x14));
assert_eq!(read_fat(&mut cur, fat_type, 0x12).unwrap(), FatValue::Free);
assert_eq!(read_fat(&mut cur, fat_type, 0x17).unwrap(), FatValue::Bad);
assert_eq!(read_fat(&mut cur, fat_type, 0x18).unwrap(), FatValue::Bad);
assert_eq!(read_fat(&mut cur, fat_type, 0x1B).unwrap(), FatValue::Free);
assert_eq!(find_free_cluster(&mut cur, fat_type, 2, 0x20).unwrap(), 0x12);
assert_eq!(find_free_cluster(&mut cur, fat_type, 0x12, 0x20).unwrap(), 0x12);
assert_eq!(find_free_cluster(&mut cur, fat_type, 0x13, 0x20).unwrap(), 0x1B);
assert!(find_free_cluster(&mut cur, fat_type, 0x13, 0x14).is_err());
assert_eq!(count_free_clusters(&mut cur, fat_type, 0x20).unwrap(), 5);
}
#[test]
fn test_fat12() {
let mut fat: Vec<u8> = vec![
0xF0, 0xFF, 0xFF, 0x03, 0x40, 0x00, 0x05, 0x60, 0x00, 0x07, 0x80, 0x00, 0xFF, 0xAF, 0x00, 0x14,
0xC0, 0x00, 0x0D, 0xE0, 0x00, 0x0F, 0x00, 0x01, 0x11, 0xF0, 0xFF, 0x00, 0xF0, 0xFF, 0x15, 0x60,
0x01, 0x19, 0x70, 0xFF, 0xF7, 0xAF, 0x01, 0xFF, 0x0F, 0x00, 0x00, 0x70, 0xFF, 0x00, 0x00, 0x00,
];
test_fat(FatType::Fat12, io::Cursor::new(&mut fat));
}
#[test]
fn test_fat16() {
let mut fat: Vec<u8> = vec![
0xF0, 0xFF, 0xFF, 0xFF, 0x03, 0x00, 0x04, 0x00, 0x05, 0x00, 0x06, 0x00, 0x07, 0x00, 0x08, 0x00,
0xFF, 0xFF, 0x0A, 0x00, 0x14, 0x00, 0x0C, 0x00, 0x0D, 0x00, 0x0E, 0x00, 0x0F, 0x00, 0x10, 0x00,
0x11, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0xFF, 0xFF, 0x15, 0x00, 0x16, 0x00, 0x19, 0x00, 0xF7, 0xFF,
0xF7, 0xFF, 0x1A, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0xF7, 0xFF, 0x00, 0x00, 0x00, 0x00,
];
test_fat(FatType::Fat16, io::Cursor::new(&mut fat));
}
#[test]
fn test_fat32() {
let mut fat: Vec<u8> = vec![
0xF0, 0xFF, 0xFF, 0x0F, 0xFF, 0xFF, 0xFF, 0x0F, 0xFF, 0xFF, 0xFF, 0x0F, 0x04, 0x00, 0x00, 0x00,
0x05, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00,
0xFF, 0xFF, 0xFF, 0x0F, 0x0A, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x0C, 0x00, 0x00, 0x00,
0x0D, 0x00, 0x00, 0x00, 0x0E, 0x00, 0x00, 0x00, 0x0F, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00,
0x11, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0x0F, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0x0F,
0x15, 0x00, 0x00, 0x00, 0x16, 0x00, 0x00, 0x00, 0x19, 0x00, 0x00, 0x00, 0xF7, 0xFF, 0xFF, 0x0F,
0xF7, 0xFF, 0xFF, 0x0F, 0x1A, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0x0F, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0xF7, 0xFF, 0xFF, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
];
test_fat(FatType::Fat32, io::Cursor::new(&mut fat));
}
}