74 lines
2.3 KiB
Rust
74 lines
2.3 KiB
Rust
use time::{format_description::FormatItem, macros::format_description, PrimitiveDateTime};
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use crate::{InputValueError, InputValueResult, Scalar, ScalarType, Value};
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const PRIMITIVE_DATE_TIME_FORMAT: &[FormatItem<'_>] =
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format_description!("[year]-[month]-[day]T[hour]:[minute]:[second].[subsecond]");
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/// A local datetime without timezone offset.
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///
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/// The input/output is a string in ISO 8601 format without timezone, including
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/// subseconds. E.g. "2022-01-12T07:30:19.12345".
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#[Scalar(internal, name = "LocalDateTime")]
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impl ScalarType for PrimitiveDateTime {
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fn parse(value: Value) -> InputValueResult<Self> {
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match &value {
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Value::String(s) => Ok(Self::parse(s, &PRIMITIVE_DATE_TIME_FORMAT)?),
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_ => Err(InputValueError::expected_type(value)),
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}
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}
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fn to_value(&self) -> Value {
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Value::String(
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self.format(&PRIMITIVE_DATE_TIME_FORMAT)
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.unwrap_or_else(|e| panic!("Failed to format `PrimitiveDateTime`: {}", e)),
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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 time::{macros::datetime, PrimitiveDateTime};
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use crate::{ScalarType, Value};
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#[test]
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fn test_primitive_date_time_to_value() {
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let cases = [
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(
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datetime!(2022-01-12 07:30:19.12345),
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"2022-01-12T07:30:19.12345",
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),
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(datetime!(2022-01-12 07:30:19), "2022-01-12T07:30:19.0"),
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];
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for (value, expected) in cases {
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let value = value.to_value();
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if let Value::String(s) = value {
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assert_eq!(s, expected);
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} else {
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panic!(
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"Unexpected Value type when formatting PrimitiveDateTime: {:?}",
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value
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);
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}
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}
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}
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#[test]
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fn test_primitive_date_time_parse() {
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let cases = [
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(
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"2022-01-12T07:30:19.12345",
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datetime!(2022-01-12 07:30:19.12345),
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),
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("2022-01-12T07:30:19.0", datetime!(2022-01-12 07:30:19)),
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];
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for (value, expected) in cases {
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let value = Value::String(value.to_string());
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let parsed = <PrimitiveDateTime as ScalarType>::parse(value).unwrap();
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assert_eq!(parsed, expected);
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}
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}
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}
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