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|
use chrono::{DateTime, Local};
use super::{Context, Module};
use crate::config::{RootModuleConfig, SegmentConfig};
use crate::configs::time::TimeConfig;
/// Outputs the current time
pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
const TIME_PREFIX: &str = "at ";
let mut module = context.new_module("time");
let config: TimeConfig = TimeConfig::try_load(module.config);
if config.disabled {
return None;
};
let default_format = if config.use_12hr { "%r" } else { "%T" };
let time_format = config.format.unwrap_or(default_format);
log::trace!(
"Timer module is enabled with format string: {}",
time_format
);
let local: DateTime<Local> = Local::now();
let formatted_time_string = format_time(time_format, local);
module.set_style(config.style);
module.get_prefix().set_value(TIME_PREFIX);
module.create_segment(
"time",
&SegmentConfig {
value: &formatted_time_string,
style: None,
},
);
Some(module)
}
/// Format a given time into the given string. This function should be referentially
/// transparent, which makes it easy to test (unlike anything involving the actual time)
fn format_time(time_format: &str, local_time: DateTime<Local>) -> String {
local_time.format(time_format).to_string()
}
/* Because we cannot make acceptance tests for the time module, these unit
tests become extra important */
#[cfg(test)]
mod tests {
use super::*;
use chrono::offset::TimeZone;
const FMT_12: &str = "%r";
const FMT_24: &str = "%T";
#[test]
fn test_midnight_12hr() {
let time = Local.ymd(2014, 7, 8).and_hms(0, 0, 0);
let formatted = format_time(FMT_12, time);
assert_eq!(formatted, "12:00:00 AM");
}
#[test]
fn test_midnight_24hr() {
let time = Local.ymd(2014, 7, 8).and_hms(0, 0, 0);
let formatted = format_time(FMT_24, time);
assert_eq!(formatted, "00:00:00");
}
#[test]
fn test_noon_12hr() {
let time = Local.ymd(2014, 7, 8).and_hms(12, 0, 0);
let formatted = format_time(FMT_12, time);
assert_eq!(formatted, "12:00:00 PM");
}
#[test]
fn test_noon_24hr() {
let time = Local.ymd(2014, 7, 8).and_hms(12, 0, 0);
let formatted = format_time(FMT_24, time);
assert_eq!(formatted, "12:00:00");
}
#[test]
fn test_arbtime_12hr() {
let time = Local.ymd(2014, 7, 8).and_hms(15, 36, 47);
let formatted = format_time(FMT_12, time);
assert_eq!(formatted, "03:36:47 PM");
}
#[test]
fn test_arbtime_24hr() {
let time = Local.ymd(2014, 7, 8).and_hms(15, 36, 47);
let formatted = format_time(FMT_24, time);
assert_eq!(formatted, "15:36:47");
}
#[test]
fn test_format_with_paren() {
let time = Local.ymd(2014, 7, 8).and_hms(15, 36, 47);
let formatted = format_time("[%T]", time);
assert_eq!(formatted, "[15:36:47]");
}
}
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