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|
use rand::Rng as _;
mod helpers;
#[derive(Clone, Debug)]
struct TerminalInput(Vec<u8>);
impl quickcheck::Arbitrary for TerminalInput {
fn arbitrary<G: quickcheck::Gen>(g: &mut G) -> Self {
let size = {
let s = g.size();
g.gen_range(0, s)
};
TerminalInput(
(0..size)
.map(|_| choose_terminal_input_fragment(g))
.flatten()
.collect(),
)
}
fn shrink(&self) -> Box<dyn Iterator<Item = Self>> {
Box::new(self.0.shrink().map(TerminalInput))
}
}
#[allow(clippy::many_single_char_names)]
fn choose_terminal_input_fragment<G: quickcheck::Gen>(g: &mut G) -> Vec<u8> {
enum Fragment {
Text,
Control,
Escape,
CSI,
#[allow(dead_code)]
OSC,
#[allow(dead_code)]
DCS,
}
impl rand::distributions::Distribution<Fragment>
for rand::distributions::Standard
{
fn sample<R: rand::Rng + ?Sized>(&self, rng: &mut R) -> Fragment {
match rng.gen() {
0u8..=231 => Fragment::Text,
232..=239 => Fragment::Control,
240..=247 => Fragment::Escape,
248..=255 => Fragment::CSI,
}
}
}
match g.gen() {
Fragment::Text => {
let mut u: u32 = g.gen_range(32, 2u32.pow(20) - 2048);
// surrogates aren't valid codepoints on their own
if u >= 0xD800 {
u += 2048;
}
let c: Result<char, _> = std::convert::TryFrom::try_from(u);
let c = match c {
Ok(c) => c,
Err(e) => panic!("failed to create char from {}: {}", u, e),
};
let mut b = [0; 4];
let s = c.encode_utf8(&mut b);
s.to_string().into_bytes()
}
Fragment::Control => vec![g.gen_range(7, 14)],
Fragment::Escape => {
let mut v = vec![0x1b];
let c = g.gen_range(b'0', b'~');
v.push(c);
v
}
Fragment::CSI => {
let mut v = vec![0x1b, b'['];
// TODO: params
let c = g.gen_range(b'@', b'~');
v.push(c);
v
}
Fragment::OSC => {
// TODO
unimplemented!()
}
Fragment::DCS => {
// TODO
unimplemented!()
}
}
// TODO: sometimes add garbage in random places
}
fn contents_formatted_reproduces_state_random(input: Vec<u8>) -> bool {
helpers::contents_formatted_reproduces_state(&input)
}
fn contents_formatted_reproduces_state_structured(
input: TerminalInput,
) -> bool {
helpers::contents_formatted_reproduces_state(&input.0)
}
#[test]
#[ignore]
fn qc_structured_long() {
let mut qc = quickcheck::QuickCheck::new()
.tests(1_000_000)
.max_tests(1_000_000);
qc.quickcheck(
contents_formatted_reproduces_state_structured
as fn(TerminalInput) -> bool,
);
}
#[test]
fn qc_structured_short() {
let mut qc = quickcheck::QuickCheck::new().tests(1_000).max_tests(1_000);
qc.quickcheck(
contents_formatted_reproduces_state_structured
as fn(TerminalInput) -> bool,
);
}
#[test]
#[ignore]
fn qc_random_long() {
let mut qc = quickcheck::QuickCheck::new()
.tests(10_000_000)
.max_tests(10_000_000);
qc.quickcheck(
contents_formatted_reproduces_state_random as fn(Vec<u8>) -> bool,
);
}
#[test]
fn qc_random_short() {
let mut qc = quickcheck::QuickCheck::new()
.tests(10_000)
.max_tests(10_000);
qc.quickcheck(
contents_formatted_reproduces_state_random as fn(Vec<u8>) -> bool,
);
}
|
