#![cfg(feature = "std")]
#![allow(
clippy::approx_constant,
clippy::useless_vec,
clippy::len_zero,
clippy::unnecessary_cast,
clippy::redundant_closure,
clippy::too_many_arguments,
clippy::type_complexity,
clippy::needless_borrow,
clippy::enum_variant_names,
clippy::upper_case_acronyms,
clippy::inconsistent_digit_grouping,
clippy::unit_cmp,
clippy::assertions_on_constants,
clippy::iter_on_single_items,
clippy::expect_fun_call,
clippy::redundant_pattern_matching,
variant_size_differences,
clippy::absurd_extreme_comparisons,
clippy::nonminimal_bool,
clippy::for_kv_map,
clippy::needless_range_loop,
clippy::single_match,
clippy::collapsible_if,
clippy::needless_return,
clippy::redundant_clone,
clippy::map_entry,
clippy::match_single_binding,
clippy::bool_comparison,
clippy::derivable_impls,
clippy::manual_range_contains,
clippy::needless_borrows_for_generic_args,
clippy::manual_map,
clippy::vec_init_then_push,
clippy::identity_op,
clippy::manual_flatten,
clippy::single_char_pattern,
clippy::search_is_some,
clippy::option_map_unit_fn,
clippy::while_let_on_iterator,
clippy::clone_on_copy,
clippy::box_collection,
clippy::redundant_field_names,
clippy::ptr_arg,
clippy::large_enum_variant,
clippy::match_ref_pats,
clippy::needless_pass_by_value,
clippy::unused_unit,
clippy::let_and_return,
clippy::suspicious_else_formatting,
clippy::manual_strip,
clippy::match_like_matches_macro,
clippy::from_over_into,
clippy::wrong_self_convention,
clippy::inherent_to_string,
clippy::new_without_default,
clippy::unnecessary_wraps,
clippy::field_reassign_with_default,
clippy::manual_find,
clippy::unnecessary_lazy_evaluations,
clippy::should_implement_trait,
clippy::missing_safety_doc,
clippy::unusual_byte_groupings,
clippy::bool_assert_comparison,
clippy::zero_prefixed_literal,
clippy::await_holding_lock,
clippy::manual_saturating_arithmetic,
clippy::explicit_counter_loop,
clippy::needless_lifetimes,
clippy::single_component_path_imports,
clippy::uninlined_format_args,
clippy::iter_cloned_collect,
clippy::manual_str_repeat,
clippy::excessive_precision,
clippy::precedence,
clippy::unnecessary_literal_unwrap
)]
use oxicode::{Decode, Encode};
use std::env::temp_dir;
#[derive(Debug, PartialEq, Encode, Decode)]
struct AllPrimitives {
a: i8,
b: i16,
c: i32,
d: i64,
e: i128,
f: u8,
g: u16,
h: u32,
i: u64,
j: u128,
k: f32,
l: f64,
m: bool,
n: char,
}
#[derive(Debug, PartialEq, Encode, Decode)]
enum MultiVariant {
Unit,
Newtype(u64),
Pair(i32, i32),
Named { label: String, value: f64 },
}
#[test]
fn test_file_io_i8_roundtrip() {
let path = temp_dir().join(format!("oxicode_fio5_test1_{}.bin", std::process::id()));
let original: i8 = -42;
oxicode::encode_to_file(&original, &path).expect("encode i8 to file");
let decoded: i8 = oxicode::decode_from_file(&path).expect("decode i8 from file");
assert_eq!(original, decoded);
std::fs::remove_file(&path).ok();
}
#[test]
fn test_file_io_i16_roundtrip() {
let path = temp_dir().join(format!("oxicode_fio5_test2_{}.bin", std::process::id()));
let original: i16 = -32000;
oxicode::encode_to_file(&original, &path).expect("encode i16 to file");
let decoded: i16 = oxicode::decode_from_file(&path).expect("decode i16 from file");
assert_eq!(original, decoded);
std::fs::remove_file(&path).ok();
}
#[test]
fn test_file_io_i32_roundtrip() {
let path = temp_dir().join(format!("oxicode_fio5_test3_{}.bin", std::process::id()));
let original: i32 = -2_000_000_000;
oxicode::encode_to_file(&original, &path).expect("encode i32 to file");
let decoded: i32 = oxicode::decode_from_file(&path).expect("decode i32 from file");
assert_eq!(original, decoded);
std::fs::remove_file(&path).ok();
}
#[test]
fn test_file_io_i64_roundtrip() {
let path = temp_dir().join(format!("oxicode_fio5_test4_{}.bin", std::process::id()));
let original: i64 = i64::MIN;
oxicode::encode_to_file(&original, &path).expect("encode i64 to file");
let decoded: i64 = oxicode::decode_from_file(&path).expect("decode i64 from file");
assert_eq!(original, decoded);
std::fs::remove_file(&path).ok();
}
#[test]
fn test_file_io_i128_roundtrip() {
let path = temp_dir().join(format!("oxicode_fio5_test5_{}.bin", std::process::id()));
let original: i128 = i128::MIN / 2 + 1;
oxicode::encode_to_file(&original, &path).expect("encode i128 to file");
let decoded: i128 = oxicode::decode_from_file(&path).expect("decode i128 from file");
assert_eq!(original, decoded);
std::fs::remove_file(&path).ok();
}
#[test]
fn test_file_io_u8_roundtrip() {
let path = temp_dir().join(format!("oxicode_fio5_test6_{}.bin", std::process::id()));
let original: u8 = u8::MAX;
oxicode::encode_to_file(&original, &path).expect("encode u8 to file");
let decoded: u8 = oxicode::decode_from_file(&path).expect("decode u8 from file");
assert_eq!(original, decoded);
std::fs::remove_file(&path).ok();
}
#[test]
fn test_file_io_char_roundtrip() {
let path = temp_dir().join(format!("oxicode_fio5_test7_{}.bin", std::process::id()));
let original: char = '⚡';
oxicode::encode_to_file(&original, &path).expect("encode char to file");
let decoded: char = oxicode::decode_from_file(&path).expect("decode char from file");
assert_eq!(original, decoded);
std::fs::remove_file(&path).ok();
}
#[test]
fn test_file_io_f32_pi_roundtrip_bit_exact() {
let path = temp_dir().join(format!("oxicode_fio5_test8_{}.bin", std::process::id()));
let original: f32 = std::f32::consts::PI;
oxicode::encode_to_file(&original, &path).expect("encode f32::PI to file");
let decoded: f32 = oxicode::decode_from_file(&path).expect("decode f32::PI from file");
assert_eq!(
original.to_bits(),
decoded.to_bits(),
"f32::PI must be bit-exact after roundtrip"
);
std::fs::remove_file(&path).ok();
}
#[test]
fn test_file_io_tuple_u32_string_roundtrip() {
let path = temp_dir().join(format!("oxicode_fio5_test9_{}.bin", std::process::id()));
let original: (u32, String) = (99, "tuple-value".to_string());
oxicode::encode_to_file(&original, &path).expect("encode (u32, String) to file");
let decoded: (u32, String) =
oxicode::decode_from_file(&path).expect("decode (u32, String) from file");
assert_eq!(original, decoded);
std::fs::remove_file(&path).ok();
}
#[test]
fn test_file_io_vec_bool_roundtrip() {
let path = temp_dir().join(format!("oxicode_fio5_test10_{}.bin", std::process::id()));
let original: Vec<bool> = vec![true, false, true, true, false, false, true];
oxicode::encode_to_file(&original, &path).expect("encode Vec<bool> to file");
let decoded: Vec<bool> = oxicode::decode_from_file(&path).expect("decode Vec<bool> from file");
assert_eq!(original, decoded);
std::fs::remove_file(&path).ok();
}
#[test]
fn test_file_io_vec_tuple_roundtrip() {
let path = temp_dir().join(format!("oxicode_fio5_test11_{}.bin", std::process::id()));
let original: Vec<(u32, String)> = vec![
(1, "alpha".to_string()),
(2, "beta".to_string()),
(3, "gamma".to_string()),
];
oxicode::encode_to_file(&original, &path).expect("encode Vec<(u32,String)> to file");
let decoded: Vec<(u32, String)> =
oxicode::decode_from_file(&path).expect("decode Vec<(u32,String)> from file");
assert_eq!(original, decoded);
std::fs::remove_file(&path).ok();
}
#[test]
fn test_file_io_all_primitives_struct_roundtrip() {
let path = temp_dir().join(format!("oxicode_fio5_test12_{}.bin", std::process::id()));
let original = AllPrimitives {
a: -1,
b: -512,
c: -100_000,
d: -1_000_000_000,
e: -1_000_000_000_000_000,
f: 255,
g: 65535,
h: 4_294_967_295,
i: u64::MAX / 2,
j: u128::MAX / 3,
k: std::f32::consts::E,
l: std::f64::consts::SQRT_2,
m: true,
n: 'Z',
};
oxicode::encode_to_file(&original, &path).expect("encode AllPrimitives to file");
let decoded: AllPrimitives =
oxicode::decode_from_file(&path).expect("decode AllPrimitives from file");
assert_eq!(original.a, decoded.a);
assert_eq!(original.b, decoded.b);
assert_eq!(original.c, decoded.c);
assert_eq!(original.d, decoded.d);
assert_eq!(original.e, decoded.e);
assert_eq!(original.f, decoded.f);
assert_eq!(original.g, decoded.g);
assert_eq!(original.h, decoded.h);
assert_eq!(original.i, decoded.i);
assert_eq!(original.j, decoded.j);
assert_eq!(original.k.to_bits(), decoded.k.to_bits());
assert_eq!(original.l.to_bits(), decoded.l.to_bits());
assert_eq!(original.m, decoded.m);
assert_eq!(original.n, decoded.n);
std::fs::remove_file(&path).ok();
}
#[test]
fn test_file_io_enum_multi_variant_roundtrip() {
let path_unit = temp_dir().join(format!("oxicode_fio5_test13a_{}.bin", std::process::id()));
let path_newtype = temp_dir().join(format!("oxicode_fio5_test13b_{}.bin", std::process::id()));
let path_pair = temp_dir().join(format!("oxicode_fio5_test13c_{}.bin", std::process::id()));
let path_named = temp_dir().join(format!("oxicode_fio5_test13d_{}.bin", std::process::id()));
let unit = MultiVariant::Unit;
oxicode::encode_to_file(&unit, &path_unit).expect("encode Unit variant");
let decoded_unit: MultiVariant =
oxicode::decode_from_file(&path_unit).expect("decode Unit variant");
assert_eq!(unit, decoded_unit);
let newtype = MultiVariant::Newtype(42_000);
oxicode::encode_to_file(&newtype, &path_newtype).expect("encode Newtype variant");
let decoded_newtype: MultiVariant =
oxicode::decode_from_file(&path_newtype).expect("decode Newtype variant");
assert_eq!(newtype, decoded_newtype);
let pair = MultiVariant::Pair(-7, 13);
oxicode::encode_to_file(&pair, &path_pair).expect("encode Pair variant");
let decoded_pair: MultiVariant =
oxicode::decode_from_file(&path_pair).expect("decode Pair variant");
assert_eq!(pair, decoded_pair);
let named = MultiVariant::Named {
label: "oxicode".to_string(),
value: std::f64::consts::PI,
};
oxicode::encode_to_file(&named, &path_named).expect("encode Named variant");
let decoded_named: MultiVariant =
oxicode::decode_from_file(&path_named).expect("decode Named variant");
assert_eq!(named, decoded_named);
std::fs::remove_file(&path_unit).ok();
std::fs::remove_file(&path_newtype).ok();
std::fs::remove_file(&path_pair).ok();
std::fs::remove_file(&path_named).ok();
}
#[test]
fn test_file_io_fixed_int_encoding_config_roundtrip() {
let path = temp_dir().join(format!("oxicode_fio5_test14_{}.bin", std::process::id()));
let cfg = oxicode::config::standard().with_fixed_int_encoding();
let original: u64 = 12_345_678_901;
oxicode::encode_to_file_with_config(&original, &path, cfg).expect("encode with fixed_int cfg");
let decoded: u64 =
oxicode::decode_from_file_with_config(&path, cfg).expect("decode with fixed_int cfg");
assert_eq!(original, decoded);
std::fs::remove_file(&path).ok();
}
#[test]
fn test_file_io_big_endian_config_raw_bytes_verification() {
let path = temp_dir().join(format!("oxicode_fio5_test15_{}.bin", std::process::id()));
let cfg = oxicode::config::standard()
.with_big_endian()
.with_fixed_int_encoding();
let original: u32 = 0x0102_0304;
oxicode::encode_to_file_with_config(&original, &path, cfg)
.expect("encode u32 with big_endian fixed_int cfg");
let raw_bytes = std::fs::read(&path).expect("read raw bytes from file");
assert!(
raw_bytes.windows(4).any(|w| w == [0x01, 0x02, 0x03, 0x04]),
"big-endian bytes not found in file: {:?}",
raw_bytes
);
let decoded: u32 =
oxicode::decode_from_file_with_config(&path, cfg).expect("decode with big_endian cfg");
assert_eq!(original, decoded);
std::fs::remove_file(&path).ok();
}
#[test]
fn test_file_io_overwrite_multiple_times_last_write_wins() {
let path = temp_dir().join(format!("oxicode_fio5_test16_{}.bin", std::process::id()));
for val in [100u32, 200u32, 300u32, 400u32, 999u32] {
oxicode::encode_to_file(&val, &path).expect("encode overwrite pass");
}
let decoded: u32 = oxicode::decode_from_file(&path).expect("decode after multiple overwrites");
assert_eq!(999u32, decoded, "only the last write should survive");
std::fs::remove_file(&path).ok();
}
#[test]
fn test_file_io_decode_nonexistent_file_returns_err() {
let path = temp_dir().join(format!(
"oxicode_fio5_test17_nonexistent_{}.bin",
std::process::id()
));
std::fs::remove_file(&path).ok();
let result = oxicode::decode_from_file::<u64>(&path);
assert!(
result.is_err(),
"decoding a nonexistent file must return Err"
);
}
#[test]
fn test_file_io_file_size_matches_encode_to_vec() {
let path = temp_dir().join(format!("oxicode_fio5_test18_{}.bin", std::process::id()));
let original = AllPrimitives {
a: 127,
b: 256,
c: 1_000_000,
d: -9_999_999,
e: 1,
f: 0,
g: 1,
h: 2,
i: 3,
j: 4,
k: 1.0_f32,
l: 2.0_f64,
m: false,
n: 'A',
};
oxicode::encode_to_file(&original, &path).expect("encode AllPrimitives for size check");
let file_bytes = std::fs::read(&path).expect("read file bytes");
let vec_bytes =
oxicode::encode_to_vec(&original).expect("encode AllPrimitives to vec for comparison");
assert_eq!(
file_bytes.len(),
vec_bytes.len(),
"file size must match encode_to_vec length"
);
assert_eq!(
file_bytes, vec_bytes,
"file contents must exactly match encode_to_vec output"
);
std::fs::remove_file(&path).ok();
}
#[test]
fn test_file_io_vec_of_vec_u8_roundtrip() {
let path = temp_dir().join(format!("oxicode_fio5_test19_{}.bin", std::process::id()));
let original: Vec<Vec<u8>> = vec![
vec![0, 1, 2, 3],
vec![],
vec![255, 254, 253],
(0u8..=127).collect(),
];
oxicode::encode_to_file(&original, &path).expect("encode Vec<Vec<u8>> to file");
let decoded: Vec<Vec<u8>> =
oxicode::decode_from_file(&path).expect("decode Vec<Vec<u8>> from file");
assert_eq!(original, decoded);
std::fs::remove_file(&path).ok();
}
#[test]
fn test_file_io_option_vec_string_some_roundtrip() {
let path = temp_dir().join(format!("oxicode_fio5_test20_{}.bin", std::process::id()));
let original: Option<Vec<String>> = Some(vec![
"one".to_string(),
"two".to_string(),
"three".to_string(),
]);
oxicode::encode_to_file(&original, &path).expect("encode Option<Vec<String>> Some to file");
let decoded: Option<Vec<String>> =
oxicode::decode_from_file(&path).expect("decode Option<Vec<String>> from file");
assert_eq!(original, decoded);
std::fs::remove_file(&path).ok();
}
#[test]
fn test_file_io_u64_max_roundtrip() {
let path = temp_dir().join(format!("oxicode_fio5_test21_{}.bin", std::process::id()));
let original: u64 = u64::MAX;
oxicode::encode_to_file(&original, &path).expect("encode u64::MAX to file");
let decoded: u64 = oxicode::decode_from_file(&path).expect("decode u64::MAX from file");
assert_eq!(
original, decoded,
"u64::MAX must survive file roundtrip exactly"
);
std::fs::remove_file(&path).ok();
}
#[test]
fn test_file_io_sequential_write_decode_two_values() {
use std::io::Write;
let path = temp_dir().join(format!("oxicode_fio5_test22_{}.bin", std::process::id()));
let first_val: u32 = 0xDEAD_BEEF;
let second_val: String = "sequential-decode".to_string();
let first_bytes = oxicode::encode_to_vec(&first_val).expect("encode first value to vec");
let second_bytes = oxicode::encode_to_vec(&second_val).expect("encode second value to vec");
let mut file = std::fs::File::create(&path).expect("create sequential test file");
file.write_all(&first_bytes).expect("write first bytes");
file.write_all(&second_bytes).expect("write second bytes");
drop(file);
let mut reader =
std::io::BufReader::new(std::fs::File::open(&path).expect("open sequential test file"));
let decoded_first: u32 =
oxicode::decode_from_std_read(&mut reader, oxicode::config::standard())
.expect("decode first u32 sequentially");
let decoded_second: String =
oxicode::decode_from_std_read(&mut reader, oxicode::config::standard())
.expect("decode second String sequentially");
assert_eq!(first_val, decoded_first, "first sequential value mismatch");
assert_eq!(
second_val, decoded_second,
"second sequential value mismatch"
);
std::fs::remove_file(&path).ok();
}