<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/Users/m018/.cargo/registry/src/github.com-1ecc6299db9ec823/chrono-0.4.31/src/weekday.rs`."><title>weekday.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Bold-a2c9cd1067f8b328.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-c4dbdcde0fbd8430.css" id="mainThemeStyle"><link rel="stylesheet" id="themeStyle" href="../../static.files/light-db279b6232be9c13.css"><link rel="stylesheet" disabled href="../../static.files/dark-cf923f49f397b216.css"><link rel="stylesheet" disabled href="../../static.files/ayu-be46fdc453a55015.css"><script src="../../static.files/storage-3891ce972e3a2bf8.js"></script><script defer src="../../static.files/source-script-1b95b7cca98b26e5.js"></script><script defer src="../../source-files.js"></script><script defer src="../../static.files/main-98a684e84ae5b08b.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-13285aec31fa243e.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"></nav><main><nav class="sub"><a class="sub-logo-container" href="../../chrono/index.html"><img class="rust-logo" src="../../static.files/rust-logo-151179464ae7ed46.svg" alt="logo"></a><form class="search-form"><span></span><input class="search-input" name="search" aria-label="Run search in the documentation" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><a href="#1" id="1">1</a>
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</pre><pre class="rust"><code><span class="kw">use </span>core::fmt;
<span class="attr">#[cfg(feature = <span class="string">"rkyv"</span>)]
</span><span class="kw">use </span>rkyv::{Archive, Deserialize, Serialize};
<span class="kw">use </span><span class="kw">crate</span>::OutOfRange;
<span class="doccomment">/// The day of week.
///
/// The order of the days of week depends on the context.
/// (This is why this type does *not* implement `PartialOrd` or `Ord` traits.)
/// One should prefer `*_from_monday` or `*_from_sunday` methods to get the correct result.
///
/// # Example
/// ```
/// use chrono::Weekday;
///
/// let monday = "Monday".parse::<Weekday>().unwrap();
/// assert_eq!(monday, Weekday::Mon);
///
/// let sunday = Weekday::try_from(6).unwrap();
/// assert_eq!(sunday, Weekday::Sun);
///
/// assert_eq!(sunday.num_days_from_monday(), 6); // starts counting with Monday = 0
/// assert_eq!(sunday.number_from_monday(), 7); // starts counting with Monday = 1
/// assert_eq!(sunday.num_days_from_sunday(), 0); // starts counting with Sunday = 0
/// assert_eq!(sunday.number_from_sunday(), 1); // starts counting with Sunday = 1
///
/// assert_eq!(sunday.succ(), monday);
/// assert_eq!(sunday.pred(), Weekday::Sat);
/// ```
</span><span class="attr">#[derive(PartialEq, Eq, Copy, Clone, Debug, Hash)]
#[cfg_attr(feature = <span class="string">"rustc-serialize"</span>, derive(RustcEncodable, RustcDecodable))]
#[cfg_attr(feature = <span class="string">"rkyv"</span>, derive(Archive, Deserialize, Serialize))]
#[cfg_attr(feature = <span class="string">"arbitrary"</span>, derive(arbitrary::Arbitrary))]
</span><span class="kw">pub enum </span>Weekday {
<span class="doccomment">/// Monday.
</span>Mon = <span class="number">0</span>,
<span class="doccomment">/// Tuesday.
</span>Tue = <span class="number">1</span>,
<span class="doccomment">/// Wednesday.
</span>Wed = <span class="number">2</span>,
<span class="doccomment">/// Thursday.
</span>Thu = <span class="number">3</span>,
<span class="doccomment">/// Friday.
</span>Fri = <span class="number">4</span>,
<span class="doccomment">/// Saturday.
</span>Sat = <span class="number">5</span>,
<span class="doccomment">/// Sunday.
</span>Sun = <span class="number">6</span>,
}
<span class="kw">impl </span>Weekday {
<span class="doccomment">/// The next day in the week.
///
/// `w`: | `Mon` | `Tue` | `Wed` | `Thu` | `Fri` | `Sat` | `Sun`
/// ----------- | ----- | ----- | ----- | ----- | ----- | ----- | -----
/// `w.succ()`: | `Tue` | `Wed` | `Thu` | `Fri` | `Sat` | `Sun` | `Mon`
</span><span class="attr">#[inline]
#[must_use]
</span><span class="kw">pub const fn </span>succ(<span class="kw-2">&</span><span class="self">self</span>) -> Weekday {
<span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{
Weekday::Mon => Weekday::Tue,
Weekday::Tue => Weekday::Wed,
Weekday::Wed => Weekday::Thu,
Weekday::Thu => Weekday::Fri,
Weekday::Fri => Weekday::Sat,
Weekday::Sat => Weekday::Sun,
Weekday::Sun => Weekday::Mon,
}
}
<span class="doccomment">/// The previous day in the week.
///
/// `w`: | `Mon` | `Tue` | `Wed` | `Thu` | `Fri` | `Sat` | `Sun`
/// ----------- | ----- | ----- | ----- | ----- | ----- | ----- | -----
/// `w.pred()`: | `Sun` | `Mon` | `Tue` | `Wed` | `Thu` | `Fri` | `Sat`
</span><span class="attr">#[inline]
#[must_use]
</span><span class="kw">pub const fn </span>pred(<span class="kw-2">&</span><span class="self">self</span>) -> Weekday {
<span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{
Weekday::Mon => Weekday::Sun,
Weekday::Tue => Weekday::Mon,
Weekday::Wed => Weekday::Tue,
Weekday::Thu => Weekday::Wed,
Weekday::Fri => Weekday::Thu,
Weekday::Sat => Weekday::Fri,
Weekday::Sun => Weekday::Sat,
}
}
<span class="doccomment">/// Returns a day-of-week number starting from Monday = 1. (ISO 8601 weekday number)
///
/// `w`: | `Mon` | `Tue` | `Wed` | `Thu` | `Fri` | `Sat` | `Sun`
/// ------------------------- | ----- | ----- | ----- | ----- | ----- | ----- | -----
/// `w.number_from_monday()`: | 1 | 2 | 3 | 4 | 5 | 6 | 7
</span><span class="attr">#[inline]
</span><span class="kw">pub const fn </span>number_from_monday(<span class="kw-2">&</span><span class="self">self</span>) -> u32 {
<span class="self">self</span>.num_days_from(Weekday::Mon) + <span class="number">1
</span>}
<span class="doccomment">/// Returns a day-of-week number starting from Sunday = 1.
///
/// `w`: | `Mon` | `Tue` | `Wed` | `Thu` | `Fri` | `Sat` | `Sun`
/// ------------------------- | ----- | ----- | ----- | ----- | ----- | ----- | -----
/// `w.number_from_sunday()`: | 2 | 3 | 4 | 5 | 6 | 7 | 1
</span><span class="attr">#[inline]
</span><span class="kw">pub const fn </span>number_from_sunday(<span class="kw-2">&</span><span class="self">self</span>) -> u32 {
<span class="self">self</span>.num_days_from(Weekday::Sun) + <span class="number">1
</span>}
<span class="doccomment">/// Returns a day-of-week number starting from Monday = 0.
///
/// `w`: | `Mon` | `Tue` | `Wed` | `Thu` | `Fri` | `Sat` | `Sun`
/// --------------------------- | ----- | ----- | ----- | ----- | ----- | ----- | -----
/// `w.num_days_from_monday()`: | 0 | 1 | 2 | 3 | 4 | 5 | 6
///
/// # Example
///
</span><span class="attr">#[cfg_attr(not(feature = <span class="string">"clock"</span>), doc = <span class="string">"```ignore"</span>)]
#[cfg_attr(feature = <span class="string">"clock"</span>, doc = <span class="string">"```rust"</span>)]
</span><span class="doccomment">/// # use chrono::{Local, Datelike};
/// // MTWRFSU is occasionally used as a single-letter abbreviation of the weekdays.
/// // Use `num_days_from_monday` to index into the array.
/// const MTWRFSU: [char; 7] = ['M', 'T', 'W', 'R', 'F', 'S', 'U'];
///
/// let today = Local::now().weekday();
/// println!("{}", MTWRFSU[today.num_days_from_monday() as usize]);
/// ```
</span><span class="attr">#[inline]
</span><span class="kw">pub const fn </span>num_days_from_monday(<span class="kw-2">&</span><span class="self">self</span>) -> u32 {
<span class="self">self</span>.num_days_from(Weekday::Mon)
}
<span class="doccomment">/// Returns a day-of-week number starting from Sunday = 0.
///
/// `w`: | `Mon` | `Tue` | `Wed` | `Thu` | `Fri` | `Sat` | `Sun`
/// --------------------------- | ----- | ----- | ----- | ----- | ----- | ----- | -----
/// `w.num_days_from_sunday()`: | 1 | 2 | 3 | 4 | 5 | 6 | 0
</span><span class="attr">#[inline]
</span><span class="kw">pub const fn </span>num_days_from_sunday(<span class="kw-2">&</span><span class="self">self</span>) -> u32 {
<span class="self">self</span>.num_days_from(Weekday::Sun)
}
<span class="doccomment">/// Returns a day-of-week number starting from the parameter `day` (D) = 0.
///
/// `w`: | `D` | `D+1` | `D+2` | `D+3` | `D+4` | `D+5` | `D+6`
/// --------------------------- | ----- | ----- | ----- | ----- | ----- | ----- | -----
/// `w.num_days_from(wd)`: | 0 | 1 | 2 | 3 | 4 | 5 | 6
</span><span class="attr">#[inline]
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">const fn </span>num_days_from(<span class="kw-2">&</span><span class="self">self</span>, day: Weekday) -> u32 {
(<span class="kw-2">*</span><span class="self">self </span><span class="kw">as </span>u32 + <span class="number">7 </span>- day <span class="kw">as </span>u32) % <span class="number">7
</span>}
}
<span class="kw">impl </span>fmt::Display <span class="kw">for </span>Weekday {
<span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result {
f.write_str(<span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{
Weekday::Mon => <span class="string">"Mon"</span>,
Weekday::Tue => <span class="string">"Tue"</span>,
Weekday::Wed => <span class="string">"Wed"</span>,
Weekday::Thu => <span class="string">"Thu"</span>,
Weekday::Fri => <span class="string">"Fri"</span>,
Weekday::Sat => <span class="string">"Sat"</span>,
Weekday::Sun => <span class="string">"Sun"</span>,
})
}
}
<span class="doccomment">/// Any weekday can be represented as an integer from 0 to 6, which equals to
/// [`Weekday::num_days_from_monday`](#method.num_days_from_monday) in this implementation.
/// Do not heavily depend on this though; use explicit methods whenever possible.
</span><span class="kw">impl </span>TryFrom<u8> <span class="kw">for </span>Weekday {
<span class="kw">type </span>Error = OutOfRange;
<span class="kw">fn </span>try_from(value: u8) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, <span class="self">Self</span>::Error> {
<span class="kw">match </span>value {
<span class="number">0 </span>=> <span class="prelude-val">Ok</span>(Weekday::Mon),
<span class="number">1 </span>=> <span class="prelude-val">Ok</span>(Weekday::Tue),
<span class="number">2 </span>=> <span class="prelude-val">Ok</span>(Weekday::Wed),
<span class="number">3 </span>=> <span class="prelude-val">Ok</span>(Weekday::Thu),
<span class="number">4 </span>=> <span class="prelude-val">Ok</span>(Weekday::Fri),
<span class="number">5 </span>=> <span class="prelude-val">Ok</span>(Weekday::Sat),
<span class="number">6 </span>=> <span class="prelude-val">Ok</span>(Weekday::Sun),
<span class="kw">_ </span>=> <span class="prelude-val">Err</span>(OutOfRange::new()),
}
}
}
<span class="doccomment">/// Any weekday can be represented as an integer from 0 to 6, which equals to
/// [`Weekday::num_days_from_monday`](#method.num_days_from_monday) in this implementation.
/// Do not heavily depend on this though; use explicit methods whenever possible.
</span><span class="kw">impl </span>num_traits::FromPrimitive <span class="kw">for </span>Weekday {
<span class="attr">#[inline]
</span><span class="kw">fn </span>from_i64(n: i64) -> <span class="prelude-ty">Option</span><Weekday> {
<span class="kw">match </span>n {
<span class="number">0 </span>=> <span class="prelude-val">Some</span>(Weekday::Mon),
<span class="number">1 </span>=> <span class="prelude-val">Some</span>(Weekday::Tue),
<span class="number">2 </span>=> <span class="prelude-val">Some</span>(Weekday::Wed),
<span class="number">3 </span>=> <span class="prelude-val">Some</span>(Weekday::Thu),
<span class="number">4 </span>=> <span class="prelude-val">Some</span>(Weekday::Fri),
<span class="number">5 </span>=> <span class="prelude-val">Some</span>(Weekday::Sat),
<span class="number">6 </span>=> <span class="prelude-val">Some</span>(Weekday::Sun),
<span class="kw">_ </span>=> <span class="prelude-val">None</span>,
}
}
<span class="attr">#[inline]
</span><span class="kw">fn </span>from_u64(n: u64) -> <span class="prelude-ty">Option</span><Weekday> {
<span class="kw">match </span>n {
<span class="number">0 </span>=> <span class="prelude-val">Some</span>(Weekday::Mon),
<span class="number">1 </span>=> <span class="prelude-val">Some</span>(Weekday::Tue),
<span class="number">2 </span>=> <span class="prelude-val">Some</span>(Weekday::Wed),
<span class="number">3 </span>=> <span class="prelude-val">Some</span>(Weekday::Thu),
<span class="number">4 </span>=> <span class="prelude-val">Some</span>(Weekday::Fri),
<span class="number">5 </span>=> <span class="prelude-val">Some</span>(Weekday::Sat),
<span class="number">6 </span>=> <span class="prelude-val">Some</span>(Weekday::Sun),
<span class="kw">_ </span>=> <span class="prelude-val">None</span>,
}
}
}
<span class="doccomment">/// An error resulting from reading `Weekday` value with `FromStr`.
</span><span class="attr">#[derive(Clone, PartialEq, Eq)]
</span><span class="kw">pub struct </span>ParseWeekdayError {
<span class="kw">pub</span>(<span class="kw">crate</span>) _dummy: (),
}
<span class="attr">#[cfg(feature = <span class="string">"std"</span>)]
#[cfg_attr(docsrs, doc(cfg(feature = <span class="string">"std"</span>)))]
</span><span class="kw">impl </span>std::error::Error <span class="kw">for </span>ParseWeekdayError {}
<span class="kw">impl </span>fmt::Display <span class="kw">for </span>ParseWeekdayError {
<span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result {
f.write_fmt(<span class="macro">format_args!</span>(<span class="string">"{:?}"</span>, <span class="self">self</span>))
}
}
<span class="kw">impl </span>fmt::Debug <span class="kw">for </span>ParseWeekdayError {
<span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result {
<span class="macro">write!</span>(f, <span class="string">"ParseWeekdayError {{ .. }}"</span>)
}
}
<span class="comment">// the actual `FromStr` implementation is in the `format` module to leverage the existing code
</span><span class="attr">#[cfg(feature = <span class="string">"serde"</span>)]
#[cfg_attr(docsrs, doc(cfg(feature = <span class="string">"serde"</span>)))]
</span><span class="kw">mod </span>weekday_serde {
<span class="kw">use </span><span class="kw">super</span>::Weekday;
<span class="kw">use </span>core::fmt;
<span class="kw">use </span>serde::{de, ser};
<span class="kw">impl </span>ser::Serialize <span class="kw">for </span>Weekday {
<span class="kw">fn </span>serialize<S>(<span class="kw-2">&</span><span class="self">self</span>, serializer: S) -> <span class="prelude-ty">Result</span><S::Ok, S::Error>
<span class="kw">where
</span>S: ser::Serializer,
{
serializer.collect_str(<span class="kw-2">&</span><span class="self">self</span>)
}
}
<span class="kw">struct </span>WeekdayVisitor;
<span class="kw">impl</span><<span class="lifetime">'de</span>> de::Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>WeekdayVisitor {
<span class="kw">type </span>Value = Weekday;
<span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result {
f.write_str(<span class="string">"Weekday"</span>)
}
<span class="kw">fn </span>visit_str<E>(<span class="self">self</span>, value: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E>
<span class="kw">where
</span>E: de::Error,
{
value.parse().map_err(|<span class="kw">_</span>| E::custom(<span class="string">"short or long weekday names expected"</span>))
}
}
<span class="kw">impl</span><<span class="lifetime">'de</span>> de::Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>Weekday {
<span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error>
<span class="kw">where
</span>D: de::Deserializer<<span class="lifetime">'de</span>>,
{
deserializer.deserialize_str(WeekdayVisitor)
}
}
}
<span class="attr">#[cfg(test)]
</span><span class="kw">mod </span>tests {
<span class="kw">use </span><span class="kw">super</span>::Weekday;
<span class="attr">#[test]
</span><span class="kw">fn </span>test_num_days_from() {
<span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..<span class="number">7 </span>{
<span class="kw">let </span>base_day = Weekday::try_from(i).unwrap();
<span class="macro">assert_eq!</span>(base_day.num_days_from_monday(), base_day.num_days_from(Weekday::Mon));
<span class="macro">assert_eq!</span>(base_day.num_days_from_sunday(), base_day.num_days_from(Weekday::Sun));
<span class="macro">assert_eq!</span>(base_day.num_days_from(base_day), <span class="number">0</span>);
<span class="macro">assert_eq!</span>(base_day.num_days_from(base_day.pred()), <span class="number">1</span>);
<span class="macro">assert_eq!</span>(base_day.num_days_from(base_day.pred().pred()), <span class="number">2</span>);
<span class="macro">assert_eq!</span>(base_day.num_days_from(base_day.pred().pred().pred()), <span class="number">3</span>);
<span class="macro">assert_eq!</span>(base_day.num_days_from(base_day.pred().pred().pred().pred()), <span class="number">4</span>);
<span class="macro">assert_eq!</span>(base_day.num_days_from(base_day.pred().pred().pred().pred().pred()), <span class="number">5</span>);
<span class="macro">assert_eq!</span>(
base_day.num_days_from(base_day.pred().pred().pred().pred().pred().pred()),
<span class="number">6
</span>);
<span class="macro">assert_eq!</span>(base_day.num_days_from(base_day.succ()), <span class="number">6</span>);
<span class="macro">assert_eq!</span>(base_day.num_days_from(base_day.succ().succ()), <span class="number">5</span>);
<span class="macro">assert_eq!</span>(base_day.num_days_from(base_day.succ().succ().succ()), <span class="number">4</span>);
<span class="macro">assert_eq!</span>(base_day.num_days_from(base_day.succ().succ().succ().succ()), <span class="number">3</span>);
<span class="macro">assert_eq!</span>(base_day.num_days_from(base_day.succ().succ().succ().succ().succ()), <span class="number">2</span>);
<span class="macro">assert_eq!</span>(
base_day.num_days_from(base_day.succ().succ().succ().succ().succ().succ()),
<span class="number">1
</span>);
}
}
<span class="attr">#[test]
#[cfg(feature = <span class="string">"serde"</span>)]
</span><span class="kw">fn </span>test_serde_serialize() {
<span class="kw">use </span>serde_json::to_string;
<span class="kw">use </span>Weekday::<span class="kw-2">*</span>;
<span class="kw">let </span>cases: Vec<(Weekday, <span class="kw-2">&</span>str)> = <span class="macro">vec!</span>[
(Mon, <span class="string">"\"Mon\""</span>),
(Tue, <span class="string">"\"Tue\""</span>),
(Wed, <span class="string">"\"Wed\""</span>),
(Thu, <span class="string">"\"Thu\""</span>),
(Fri, <span class="string">"\"Fri\""</span>),
(Sat, <span class="string">"\"Sat\""</span>),
(Sun, <span class="string">"\"Sun\""</span>),
];
<span class="kw">for </span>(weekday, expected_str) <span class="kw">in </span>cases {
<span class="kw">let </span>string = to_string(<span class="kw-2">&</span>weekday).unwrap();
<span class="macro">assert_eq!</span>(string, expected_str);
}
}
<span class="attr">#[test]
#[cfg(feature = <span class="string">"serde"</span>)]
</span><span class="kw">fn </span>test_serde_deserialize() {
<span class="kw">use </span>serde_json::from_str;
<span class="kw">use </span>Weekday::<span class="kw-2">*</span>;
<span class="kw">let </span>cases: Vec<(<span class="kw-2">&</span>str, Weekday)> = <span class="macro">vec!</span>[
(<span class="string">"\"mon\""</span>, Mon),
(<span class="string">"\"MONDAY\""</span>, Mon),
(<span class="string">"\"MonDay\""</span>, Mon),
(<span class="string">"\"mOn\""</span>, Mon),
(<span class="string">"\"tue\""</span>, Tue),
(<span class="string">"\"tuesday\""</span>, Tue),
(<span class="string">"\"wed\""</span>, Wed),
(<span class="string">"\"wednesday\""</span>, Wed),
(<span class="string">"\"thu\""</span>, Thu),
(<span class="string">"\"thursday\""</span>, Thu),
(<span class="string">"\"fri\""</span>, Fri),
(<span class="string">"\"friday\""</span>, Fri),
(<span class="string">"\"sat\""</span>, Sat),
(<span class="string">"\"saturday\""</span>, Sat),
(<span class="string">"\"sun\""</span>, Sun),
(<span class="string">"\"sunday\""</span>, Sun),
];
<span class="kw">for </span>(str, expected_weekday) <span class="kw">in </span>cases {
<span class="kw">let </span>weekday = from_str::<Weekday>(str).unwrap();
<span class="macro">assert_eq!</span>(weekday, expected_weekday);
}
<span class="kw">let </span>errors: Vec<<span class="kw-2">&</span>str> =
<span class="macro">vec!</span>[<span class="string">"\"not a weekday\""</span>, <span class="string">"\"monDAYs\""</span>, <span class="string">"\"mond\""</span>, <span class="string">"mon"</span>, <span class="string">"\"thur\""</span>, <span class="string">"\"thurs\""</span>];
<span class="kw">for </span>str <span class="kw">in </span>errors {
from_str::<Weekday>(str).unwrap_err();
}
}
}
</code></pre></div>
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