58 lines
1.4 KiB
Rust
58 lines
1.4 KiB
Rust
use crate::core::EString;
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use std::convert::TryFrom;
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impl TryFrom<EString> for bool {
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type Error = ();
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#[inline]
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fn try_from(s: EString) -> Result<Self, Self::Error> {
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match s.to_lowercase().as_str() {
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"true" | "t" | "yes" | "y" | "on" | "1" => Ok(true),
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"false" | "f" | "no" | "n" | "off" | "0" | "" => Ok(false),
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_ => Err(()),
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}
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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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use crate::ParseError;
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#[test]
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fn should_parse_bool_variable() {
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let test_cases = [
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("1", true),
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("0", false),
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("y", true),
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("f", false),
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("yes", true),
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("true", true),
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("false", false),
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("t", true),
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("f", false),
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("on", true),
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("off", false),
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];
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for (val, expected) in test_cases {
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let estr = EString::from(val);
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match estr.parse::<bool>() {
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Ok(res) => assert_eq!(res, expected),
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_ => unreachable!(),
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};
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}
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}
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#[test]
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fn should_throw_parse_error() {
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let estr = EString::from("something");
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match estr.parse::<bool>() {
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Err(ParseError(orig)) => {
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assert_eq!(orig, String::from("something"));
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}
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_ => unreachable!(),
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};
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}
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}
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