61 lines
1.5 KiB
Rust
61 lines
1.5 KiB
Rust
// SPDX-FileCopyrightText: 2024 Aravinth Manivannan <realaravinth@batsense.net>
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//
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// SPDX-License-Identifier: AGPL-3.0-or-later
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// if let s: Option<String> = Some("".into()); transform to None;
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pub fn clean_option_empty_string(s: Option<String>) -> Option<String> {
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if let Some(s) = s {
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let s = s.trim();
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if s.is_empty() {
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None
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} else {
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Some(s.to_owned())
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}
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} else {
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None
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}
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}
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pub fn empty_string_err<E: std::error::Error>(s: String, e: E) -> Result<String, E> {
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let s = s.trim().to_owned();
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if s.is_empty() {
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return Err(e);
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}
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Ok(s)
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}
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#[cfg(test)]
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mod tests {
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use derive_more::{Display, Error};
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use super::*;
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#[test]
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fn test_clean_option_empty_string() {
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assert!(clean_option_empty_string(Some("".into())).is_none());
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assert!(clean_option_empty_string(Some("foo".into())).is_some());
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assert_eq!(
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clean_option_empty_string(Some("foo".into())).unwrap(),
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"foo"
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);
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}
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#[test]
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fn test_empty_string_err() {
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let s: String = "foo".into();
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#[derive(Display, Debug, Eq, PartialEq, Error)]
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enum TestError {
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EmptyString,
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}
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assert_eq!(
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empty_string_err(format!(" {s} "), TestError::EmptyString).unwrap(),
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s
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);
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assert_eq!(
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empty_string_err(format!(" "), TestError::EmptyString),
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Err(TestError::EmptyString)
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);
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}
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}
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