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factor: add -h/--exponents option (#4710)

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* factor: add -h/--exponents option

* Factor: Rebase, add -h/--exponents options
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Ideflop 2023-04-14 21:20:19 +02:00 • committed by GitHub
parent a04fc0508e
commit 6a54d820ac
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7 changed files with 121 additions and 29 deletions
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62
tests/by-util/test_factor.rs
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@ -27,6 +27,12 @@ fn test_invalid_arg() {
new_ucmd!().arg("--definitely-invalid").fails().code_is(1);
}
#[test]
fn test_valid_arg_exponents() {
new_ucmd!().arg("-h").succeeds().code_is(0);
new_ucmd!().arg("--exponents").succeeds().code_is(0);
}
#[test]
#[cfg(feature = "sort")]
fn test_parallel() {
@ -100,6 +106,33 @@ fn test_first_1000_integers() {
);
}
#[test]
fn test_first_1000_integers_with_exponents() {
use hex_literal::hex;
use sha1::{Digest, Sha1};
let n_integers = 1000;
let mut input_string = String::new();
for i in 0..=n_integers {
input_string.push_str(&(format!("{i} "))[..]);
}
println!("STDIN='{input_string}'");
let result = new_ucmd!()
.arg("-h")
.pipe_in(input_string.as_bytes())
.succeeds();
// Using factor from GNU Coreutils 9.2
// `seq 0 1000 | factor -h | sha1sum` => "45f5f758a9319870770bd1fec2de23d54331944d"
let mut hasher = Sha1::new();
hasher.update(result.stdout());
let hash_check = hasher.finalize();
assert_eq!(
hash_check[..],
hex!("45f5f758a9319870770bd1fec2de23d54331944d")
);
}
#[test]
fn test_cli_args() {
// Make sure that factor works with CLI arguments as well.
@ -279,6 +312,35 @@ fn run(input_string: &[u8], output_string: &[u8]) {
.stdout_is(String::from_utf8(output_string.to_owned()).unwrap());
}
#[test]
fn test_primes_with_exponents() {
let mut input_string = String::new();
let mut output_string = String::new();
for primes in PRIMES_BY_BITS.iter() {
for &prime in *primes {
input_string.push_str(&(format!("{prime} "))[..]);
output_string.push_str(&(format!("{prime}: {prime}\n"))[..]);
}
}
println!(
"STDIN='{}'",
String::from_utf8_lossy(input_string.as_bytes())
);
println!(
"STDOUT(expected)='{}'",
String::from_utf8_lossy(output_string.as_bytes())
);
// run factor with --exponents
new_ucmd!()
.timeout(Duration::from_secs(240))
.arg("--exponents")
.pipe_in(input_string)
.run()
.stdout_is(String::from_utf8(output_string.as_bytes().to_owned()).unwrap());
}
const PRIMES_BY_BITS: &[&[u64]] = &[
PRIMES14, PRIMES15, PRIMES16, PRIMES17, PRIMES18, PRIMES19, PRIMES20, PRIMES21, PRIMES22,
PRIMES23, PRIMES24, PRIMES25, PRIMES26, PRIMES27, PRIMES28, PRIMES29, PRIMES30, PRIMES31,