35 lines
698 B
Rust
35 lines
698 B
Rust
use std::fmt::Display;
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use num_traits::AsPrimitive;
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use crate::{InputType, InputValueError};
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pub fn minimum<T, N>(value: &T, n: N) -> Result<(), InputValueError<T>>
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where
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T: AsPrimitive<N> + InputType,
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N: PartialOrd + Display + Copy + 'static,
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{
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if value.as_() >= n {
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Ok(())
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} else {
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Err(format!(
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"the value is {}, must be greater than or equal to {}",
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value.as_(),
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n
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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_minimum() {
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assert!(minimum(&99, 100).is_err());
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assert!(minimum(&100, 100).is_ok());
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assert!(minimum(&101, 100).is_ok());
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}
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}
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