use crate::Error::{BadFormat, Unexpected};
use regex::Regex;
use thiserror::Error;
#[derive(Error, Debug)]
pub enum Error {
#[error("invalid format: {0}")]
BadFormat(String),
#[error("unexpected error ({0})")]
Unexpected(String),
}
pub fn validate_format(email: impl Into<String>) -> Result<(), Error> {
let re = Regex::new(r"^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$")
.map_err(|e| Unexpected(e.to_string()))?;
let email_string = email.into();
let ok = re.is_match(&email_string);
if !ok {
return Err(BadFormat(email_string));
}
Ok(())
}
#[cfg(test)]
mod tests {
use super::*;
struct Sample {
mail: String,
format: bool,
account: bool,
}
fn setup() -> Vec<Sample> {
vec![
Sample {
mail: "florian@carrere.cc".to_string(),
format: true,
account: true,
},
Sample {
mail: "support@g2mail.com".to_string(),
format: true,
account: false,
},
Sample {
mail: "florian@carrere.cc ".to_string(),
format: false,
account: false,
},
Sample {
mail: "test@912-wrong-domain902.com".to_string(),
format: true,
account: false,
},
Sample {
mail: "0932910-qsdcqozuioqkdmqpeidj8793@gmail.com".to_string(),
format: true,
account: false,
},
Sample {
mail: " florian@carrere.cc".to_string(),
format: false,
account: false,
},
Sample {
mail: "@gmail.com".to_string(),
format: false,
account: false,
},
Sample {
mail: "test@gmail@gmail.com".to_string(),
format: false,
account: false,
},
Sample {
mail: "test test@gmail.com".to_string(),
format: false,
account: false,
},
Sample {
mail: " test@gmail.com".to_string(),
format: false,
account: false,
},
Sample {
mail: "test@wrong domain.com".to_string(),
format: false,
account: false,
},
Sample {
mail: "é&ààà@gmail.com".to_string(),
format: false,
account: false,
},
Sample {
mail: "admin@busyboo.com".to_string(),
format: true,
account: false,
},
Sample {
mail: "a@gmail.fi".to_string(),
format: true,
account: false,
},
]
}
#[test]
fn test_validate_format() {
let samples = setup();
for s in samples.iter() {
let res = validate_format(&s.mail);
if s.format {
res.expect(format!("expected valid mail: {}", &s.mail).as_str());
} else {
match res {
Ok(_) => {
panic!(format!("expected invalid mail: {}", &s.mail));
}
Err(e) => {
assert_eq!(e.to_string(), format!("invalid format: {}", &s.mail));
}
}
}
}
}
}