use ethereum_types::H256;
use sszb::{Decode, DecodeError, Encode};
use sszb_derive::{Decode, Encode};
mod round_trip {
use super::*;
fn round_trip<T: Encode + Decode + std::fmt::Debug + PartialEq>(items: Vec<T>) {
for item in items {
let encoded = &item.as_sszb_bytes();
assert_eq!(item.sszb_bytes_len(), encoded.len());
assert_eq!(T::from_sszb_bytes(encoded), Ok(item));
}
}
#[test]
fn bool() {
let items: Vec<bool> = vec![true, false];
round_trip(items);
}
#[test]
fn u8_array_4() {
let items: Vec<[u8; 4]> = vec![[0, 0, 0, 0], [1, 0, 0, 0], [1, 2, 3, 4], [1, 2, 0, 4]];
round_trip(items);
}
#[test]
fn h256() {
let items: Vec<H256> = vec![H256::zero(), H256::from([1; 32]), H256::random()];
round_trip(items);
}
#[test]
fn vec_of_h256() {
let items: Vec<Vec<H256>> = vec![
vec![],
vec![H256::zero(), H256::from([1; 32]), H256::random()],
];
round_trip(items);
}
#[test]
fn vec_u16() {
let items: Vec<Vec<u16>> = vec![
vec![],
vec![255],
vec![0, 1, 2],
vec![100; 64],
vec![255, 0, 255],
];
round_trip(items);
}
#[test]
fn vec_of_vec_u16() {
let items: Vec<Vec<Vec<u16>>> = vec![
vec![],
vec![vec![]],
vec![vec![1, 2, 3]],
vec![vec![], vec![]],
vec![vec![], vec![1, 2, 3]],
vec![vec![1, 2, 3], vec![1, 2, 3]],
vec![vec![1, 2, 3], vec![], vec![1, 2, 3]],
vec![vec![], vec![], vec![1, 2, 3]],
vec![vec![], vec![1], vec![1, 2, 3]],
vec![vec![], vec![1], vec![1, 2, 3]],
];
round_trip(items);
}
#[derive(Debug, PartialEq, Encode, Decode)]
struct FixedLen {
a: u16,
b: u64,
c: u32,
}
#[test]
#[allow(clippy::zero_prefixed_literal)]
fn fixed_len_struct_encoding() {
let items: Vec<FixedLen> = vec![
FixedLen { a: 0, b: 0, c: 0 },
FixedLen { a: 1, b: 1, c: 1 },
FixedLen { a: 1, b: 0, c: 1 },
];
let expected_encodings = vec![
vec![00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00],
vec![00, 01, 00, 00, 00, 00, 00, 00, 00, 01, 00, 00, 00, 01],
vec![00, 01, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 01],
];
for i in 0..items.len() {
assert_eq!(
items[i].as_sszb_bytes(),
expected_encodings[i],
"Failed on {}",
i
);
}
}
#[test]
fn fixed_len_excess_bytes() {
let fixed = FixedLen { a: 1, b: 2, c: 3 };
let mut bytes = fixed.as_sszb_bytes();
bytes.append(&mut vec![0]);
assert_eq!(
FixedLen::from_sszb_bytes(&bytes),
Err(DecodeError::InvalidByteLength {
len: 15,
expected: 14,
})
);
}
#[test]
fn vec_of_fixed_len_struct() {
let items: Vec<FixedLen> = vec![
FixedLen { a: 0, b: 0, c: 0 },
FixedLen { a: 1, b: 1, c: 1 },
FixedLen { a: 1, b: 0, c: 1 },
];
round_trip(items);
}
#[derive(Debug, PartialEq, Encode, Decode)]
struct VariableLen {
a: u16,
b: Vec<u16>,
c: u32,
}
#[test]
#[allow(clippy::zero_prefixed_literal)]
fn offset_into_fixed_bytes() {
let bytes = vec![
00, 01, 00, 00, 00, 09, 00, 00, 00, 01, 00, 00, 00, 01, 00, 02,
];
assert_eq!(
VariableLen::from_sszb_bytes(&bytes),
Err(DecodeError::OffsetIntoFixedPortion(9))
);
}
#[test]
fn variable_len_excess_bytes() {
let variable = VariableLen {
a: 1,
b: vec![2],
c: 3,
};
let mut bytes = variable.as_sszb_bytes();
bytes.append(&mut vec![0]);
assert!(VariableLen::from_sszb_bytes(&bytes).is_err());
}
#[test]
#[allow(clippy::zero_prefixed_literal)]
fn first_offset_skips_byte() {
let bytes = vec![
01, 00, 00, 00, 00, 11, 00, 00, 00, 01, 00, 00, 01, 00, 02, 00,
];
assert_eq!(
VariableLen::from_sszb_bytes(&bytes),
Err(DecodeError::OffsetSkipsVariableBytes(11))
);
}
#[test]
#[allow(clippy::zero_prefixed_literal)]
fn variable_len_struct_encoding() {
let items: Vec<VariableLen> = vec![
VariableLen {
a: 0,
b: vec![],
c: 0,
},
VariableLen {
a: 1,
b: vec![0],
c: 1,
},
VariableLen {
a: 1,
b: vec![0, 1, 2],
c: 1,
},
];
let expected_encodings = vec![
vec![00, 00, 00, 00, 00, 10, 00, 00, 00, 00],
vec![00, 01, 00, 00, 00, 10, 00, 00, 00, 01, 00, 00],
vec![
00, 01, 00, 00, 00, 10, 00, 00, 00, 01, 00, 00, 00, 01, 00, 02,
],
];
for i in 0..items.len() {
assert_eq!(
items[i].as_sszb_bytes(),
expected_encodings[i],
"Failed on {}",
i
);
}
}
#[test]
fn vec_of_variable_len_struct() {
let items: Vec<VariableLen> = vec![
VariableLen {
a: 0,
b: vec![],
c: 0,
},
VariableLen {
a: 255,
b: vec![0, 1, 2, 3],
c: 99,
},
VariableLen {
a: 255,
b: vec![0],
c: 99,
},
VariableLen {
a: 50,
b: vec![0],
c: 0,
},
];
round_trip(items);
}
#[derive(Debug, PartialEq, Encode, Decode)]
struct ThreeVariableLen {
a: u16,
b: Vec<u16>,
c: Vec<u16>,
d: Vec<u16>,
}
#[test]
fn three_variable_len() {
let vec: Vec<ThreeVariableLen> = vec![ThreeVariableLen {
a: 42,
b: vec![0],
c: vec![1],
d: vec![2],
}];
round_trip(vec);
}
#[test]
#[allow(clippy::zero_prefixed_literal)]
fn offsets_decreasing() {
let bytes = vec![
01, 00, 00, 00, 00, 14, 00, 00, 00, 15, 00, 00, 00, 14, 00, 00,
];
assert_eq!(
ThreeVariableLen::from_sszb_bytes(&bytes),
Err(DecodeError::OffsetsAreDecreasing(14))
);
}
#[test]
fn tuple_u8_u16() {
let vec: Vec<(u8, u16)> = vec![
(0, 0),
(0, 1),
(1, 0),
(u8::max_value(), u16::max_value()),
(0, u16::max_value()),
(u8::max_value(), 0),
(42, 12301),
];
round_trip(vec);
}
#[test]
fn tuple_vec_vec() {
let vec: Vec<(u64, Vec<u8>, Vec<Vec<u16>>)> = vec![
(0, vec![], vec![vec![]]),
(99, vec![101], vec![vec![], vec![]]),
(
42,
vec![12, 13, 14],
vec![vec![99, 98, 97, 96], vec![42, 44, 46, 48, 50]],
),
];
round_trip(vec);
}
}
mod derive_macro {
use sszb::{Decode, Encode};
use sszb_derive::{Decode, Encode};
use std::fmt::Debug;
fn assert_encode<T: Encode>(item: &T, bytes: &[u8]) {
assert_eq!(item.as_sszb_bytes(), bytes);
}
fn assert_encode_decode<T: Encode + Decode + PartialEq + Debug>(item: &T, bytes: &[u8]) {
assert_encode(item, bytes);
assert_eq!(T::from_sszb_bytes(bytes).unwrap(), *item);
}
#[derive(PartialEq, Debug, Encode, Decode)]
#[sszb(enum_behaviour = "union")]
enum TwoFixedUnion {
U8(u8),
U16(u16),
}
#[derive(PartialEq, Debug, Encode, Decode)]
struct TwoFixedUnionStruct {
a: TwoFixedUnion,
}
#[test]
fn two_fixed_union() {
let eight = TwoFixedUnion::U8(1);
let sixteen = TwoFixedUnion::U16(1);
assert_encode_decode(&eight, &[0, 1]);
assert_encode_decode(&sixteen, &[1, 0, 1]);
assert_encode_decode(&TwoFixedUnionStruct { a: eight }, &[0, 0, 0, 4, 0, 1]);
assert_encode_decode(&TwoFixedUnionStruct { a: sixteen }, &[0, 0, 0, 4, 1, 0, 1]);
}
#[derive(PartialEq, Debug, Encode, Decode)]
struct VariableA {
a: u8,
b: Vec<u8>,
}
#[derive(PartialEq, Debug, Encode, Decode)]
struct VariableB {
a: Vec<u8>,
b: u8,
}
#[derive(PartialEq, Debug, Encode)]
#[sszb(enum_behaviour = "transparent")]
enum TwoVariableTrans {
A(VariableA),
B(VariableB),
}
#[derive(PartialEq, Debug, Encode)]
struct TwoVariableTransStruct {
a: TwoVariableTrans,
}
#[derive(PartialEq, Debug, Encode, Decode)]
#[sszb(enum_behaviour = "union")]
enum TwoVariableUnion {
A(VariableA),
B(VariableB),
}
#[derive(PartialEq, Debug, Encode, Decode)]
struct TwoVariableUnionStruct {
a: TwoVariableUnion,
}
#[test]
fn two_variable_trans() {
let trans_a = TwoVariableTrans::A(VariableA {
a: 1,
b: vec![2, 3],
});
let trans_b = TwoVariableTrans::B(VariableB {
a: vec![1, 2],
b: 3,
});
assert_encode(&trans_a, &[1, 0, 0, 0, 5, 2, 3]);
assert_encode(&trans_b, &[0, 0, 0, 5, 3, 1, 2]);
assert_encode(
&TwoVariableTransStruct { a: trans_a },
&[0, 0, 0, 4, 1, 0, 0, 0, 5, 2, 3],
);
assert_encode(
&TwoVariableTransStruct { a: trans_b },
&[0, 0, 0, 4, 0, 0, 0, 5, 3, 1, 2],
);
}
#[test]
fn two_variable_union() {
let union_a = TwoVariableUnion::A(VariableA {
a: 1,
b: vec![2, 3],
});
let union_b = TwoVariableUnion::B(VariableB {
a: vec![1, 2],
b: 3,
});
assert_encode_decode(&union_a, &[0, 1, 0, 0, 0, 5, 2, 3]);
assert_encode_decode(&union_b, &[1, 0, 0, 0, 5, 3, 1, 2]);
assert_encode_decode(
&TwoVariableUnionStruct { a: union_a },
&[0, 0, 0, 4, 0, 1, 0, 0, 0, 5, 2, 3],
);
assert_encode_decode(
&TwoVariableUnionStruct { a: union_b },
&[0, 0, 0, 4, 1, 0, 0, 0, 5, 3, 1, 2],
);
}
#[derive(PartialEq, Debug, Encode, Decode)]
#[sszb(enum_behaviour = "union")]
enum TwoVecUnion {
A(Vec<u8>),
B(Vec<u8>),
}
#[test]
fn two_vec_union() {
assert_encode_decode(&TwoVecUnion::A(vec![]), &[0]);
assert_encode_decode(&TwoVecUnion::B(vec![]), &[1]);
assert_encode_decode(&TwoVecUnion::A(vec![0]), &[0, 0]);
assert_encode_decode(&TwoVecUnion::B(vec![0]), &[1, 0]);
assert_encode_decode(&TwoVecUnion::A(vec![0, 1]), &[0, 0, 1]);
assert_encode_decode(&TwoVecUnion::B(vec![0, 1]), &[1, 0, 1]);
}
}