stubr 0.6.2

Wiremock implemented in Rust
Documentation 
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use crate::error::StubrResult;
use rand::{Rng, SeedableRng};
use rand_xorshift::XorShiftRng;
use regex_syntax::ParserBuilder;

/// Generates random data given a regex
pub struct RegexRndGenerator<'a>(pub &'a str);

impl RegexRndGenerator<'_> {
    pub fn try_generate(self) -> StubrResult<String> {
        const MAX_REPEAT: u32 = 10;
        let mut rng = XorShiftRng::seed_from_u64(42);
        let mut parser = ParserBuilder::new().unicode(false).build();
        let hir = parser.parse(self.0).map_err(Box::new)?;
        let gen = rand_regex::Regex::with_hir(hir, MAX_REPEAT).map_err(Box::new)?;
        Ok(rng.sample::<String, _>(&gen))
    }
}

#[cfg(test)]
mod verify_regex_tests {
    use super::*;

    #[test]
    fn should_respect_type_and_length() {
        let sample: String = RegexRndGenerator("([a-z]{10})").try_generate().unwrap();
        assert_eq!(sample.len(), 10);
        assert!(sample.chars().all(|c| c.is_ascii()))
    }
}