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Wasm math tests extended (#6354) 

* extend math tests

* use latest wasm-tests

* cleanup

* avoid overflow

* use correct gas-

* and division
This commit is contained in:
Nikolay Volf 2017-08-28 15:12:40 +03:00 committed by Gav Wood
parent 3226e1ca33
commit abecd80f54
2 changed files with 112 additions and 27 deletions
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2
ethcore/res/wasm-tests

@ -1 +1 @@
Subproject commit 85e76c5ea2a54c6c54e35014643b5080a50460c5
Subproject commit 519b0b967cffd7d1236ef21698b1e6e415a048e9

137
ethcore/wasm/src/tests.rs
View File

@ -415,36 +415,121 @@ fn storage_read() {
assert_eq!(Address::from(&result[12..32]), address);
}
macro_rules! reqrep_test {
($name: expr, $input: expr) => {
{
::ethcore_logger::init_log();
let code = load_sample!($name);
// Tests that contract's ability to read from a storage
// Test prepopulates address into storage, than executes a contract which read that address from storage and write this address into result
let mut params = ActionParams::default();
params.gas = U256::from(100_000);
params.code = Some(Arc::new(code));
params.data = Some($input);
let (gas_left, result) = {
let mut interpreter = wasm_interpreter();
let result = interpreter.exec(params, &mut FakeExt::new()).expect("Interpreter to execute without any errors");
match result {
GasLeft::Known(_) => { panic!("Test is expected to return payload to check"); },
GasLeft::NeedsReturn { gas_left: gas, data: result, apply_state: _apply } => (gas, result.to_vec()),
}
};
(gas_left, result)
}
}
}
// math_* tests check the ability of wasm contract to perform big integer operations
// - addition
// - multiplication
// - substraction
// - division
// addition
#[test]
fn math_add() {
::ethcore_logger::init_log();
let code = load_sample!("math.wasm");
let mut params = ActionParams::default();
params.gas = U256::from(100_000);
params.code = Some(Arc::new(code));
let mut args = [0u8; 64];
let arg_a = U256::from_dec_str("999999999999999999999999999999").unwrap();
let arg_b = U256::from_dec_str("888888888888888888888888888888").unwrap();
arg_a.to_big_endian(&mut args[0..32]);
arg_b.to_big_endian(&mut args[32..64]);
params.data = Some(args.to_vec());
let (gas_left, result) = {
let mut interpreter = wasm_interpreter();
let result = interpreter.exec(params, &mut FakeExt::new()).expect("Interpreter to execute without any errors");
match result {
GasLeft::Known(_) => { panic!("storage_read should return payload"); },
GasLeft::NeedsReturn { gas_left: gas, data: result, apply_state: _apply } => (gas, result.to_vec()),
let (gas_left, result) = reqrep_test!(
"math.wasm",
{
let mut args = [0u8; 65];
let arg_a = U256::from_dec_str("999999999999999999999999999999").unwrap();
let arg_b = U256::from_dec_str("888888888888888888888888888888").unwrap();
arg_a.to_big_endian(&mut args[1..33]);
arg_b.to_big_endian(&mut args[33..65]);
args.to_vec()
}
};
);
let sum: U256 = (&result[..]).into();
assert_eq!(gas_left, U256::from(96284));
assert_eq!(sum, U256::from_dec_str("1888888888888888888888888888887").unwrap());
assert_eq!(gas_left, U256::from(98087));
assert_eq!(
U256::from_dec_str("1888888888888888888888888888887").unwrap(),
(&result[..]).into()
);
}
// multiplication
#[test]
fn math_mul() {
let (gas_left, result) = reqrep_test!(
"math.wasm",
{
let mut args = [1u8; 65];
let arg_a = U256::from_dec_str("888888888888888888888888888888").unwrap();
let arg_b = U256::from_dec_str("999999999999999999999999999999").unwrap();
arg_a.to_big_endian(&mut args[1..33]);
arg_b.to_big_endian(&mut args[33..65]);
args.to_vec()
}
);
assert_eq!(gas_left, U256::from(97236));
assert_eq!(
U256::from_dec_str("888888888888888888888888888887111111111111111111111111111112").unwrap(),
(&result[..]).into()
);
}
// substraction
#[test]
fn math_sub() {
let (gas_left, result) = reqrep_test!(
"math.wasm",
{
let mut args = [2u8; 65];
let arg_a = U256::from_dec_str("999999999999999999999999999999").unwrap();
let arg_b = U256::from_dec_str("888888888888888888888888888888").unwrap();
arg_a.to_big_endian(&mut args[1..33]);
arg_b.to_big_endian(&mut args[33..65]);
args.to_vec()
}
);
assert_eq!(gas_left, U256::from(98131));
assert_eq!(
U256::from_dec_str("111111111111111111111111111111").unwrap(),
(&result[..]).into()
);
}
#[test]
fn math_div() {
let (gas_left, result) = reqrep_test!(
"math.wasm",
{
let mut args = [3u8; 65];
let arg_a = U256::from_dec_str("999999999999999999999999999999").unwrap();
let arg_b = U256::from_dec_str("888888888888888888888888").unwrap();
arg_a.to_big_endian(&mut args[1..33]);
arg_b.to_big_endian(&mut args[33..65]);
args.to_vec()
}
);
assert_eq!(gas_left, U256::from(91420));
assert_eq!(
U256::from_dec_str("1125000").unwrap(),
(&result[..]).into()
);
}