58 lines
1.2 KiB
Rust
58 lines
1.2 KiB
Rust
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use regex_macro::regex;
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default_derive!{
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pub struct SightingId {
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id: String
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}
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}
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impl TryFrom<&str> for SightingId {
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type Error = &'static str;
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fn try_from(value: &str) -> Result<Self, Self::Error> {
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let re = regex!("^[[:digit:]]+$");
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if value.len() <= 10 && re.is_match(value) {
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Ok(SightingId { id: value.to_string() })
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}
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else {
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Err("Failed to parse SightingId")
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}
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}
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}
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impl Into<String> for SightingId {
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fn into(self) -> String {
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self.id
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}
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}
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#[test]
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fn empty() {
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let id: Result<SightingId, _> = "".try_into();
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assert!(id.is_err())
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}
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#[test]
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fn oversized() {
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let id: Result<SightingId, _> = "12345678910".try_into();
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assert!(id.is_err())
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}
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#[test]
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fn forbidden_char() {
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let id: Result<SightingId, _> = "1954a".try_into();
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assert!(id.is_err())
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}
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#[test]
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fn valid1() {
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let id: Result<SightingId, _> = "12345".try_into();
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assert_eq!(id, Ok(SightingId { id: "12345".to_string() }))
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}
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#[test]
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fn valid2() {
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let id: Result<SightingId, _> = "0123456789".try_into();
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assert_eq!(id, Ok(SightingId { id: "0123456789".to_string() }))
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}
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