30 lines
734 B
Rust
30 lines
734 B
Rust
use crate::{InputType, InputValueError};
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pub fn chars_min_length<T: AsRef<str> + InputType>(
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value: &T,
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len: usize,
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) -> Result<(), InputValueError<T>> {
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if value.as_ref().chars().count() >= len {
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Ok(())
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} else {
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Err(format!(
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"the chars length is {}, must be greater than or equal to {}",
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value.as_ref().len(),
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len
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)
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.into())
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_chars_min_length() {
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assert!(chars_min_length(&"你好".to_string(), 3).is_err());
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assert!(chars_min_length(&"你好啊".to_string(), 3).is_ok());
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assert!(chars_min_length(&"嗨你好啊".to_string(), 3).is_ok());
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}
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}
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