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Test offset formatter
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@pitdicker
pitdicker committed May 24, 2023
1 parent 8dd1673 commit df6a2d0
Showing 1 changed file with 161 additions and 2 deletions.
163 changes: 161 additions & 2 deletions src/format/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -523,7 +523,7 @@ pub enum Colon {
}

/// Prints an offset from UTC with the format defined in the `UtcOffsetFormat`.
#[cfg(any(feature = "alloc", feature = "std"))]
#[cfg(any(feature = "alloc", feature = "std", test))]
impl UtcOffsetFormat {
fn format(&self, result: &mut String, off: FixedOffset) -> fmt::Result {
let off = off.local_minus_utc();
Expand Down Expand Up @@ -576,7 +576,7 @@ impl UtcOffsetFormat {
}
}

#[cfg(any(feature = "alloc", feature = "std"))]
#[cfg(any(feature = "alloc", feature = "std", test))]
#[allow(clippy::too_many_arguments)]
fn write_offsets(
w: &mut impl Write,
Expand Down Expand Up @@ -1208,3 +1208,162 @@ impl FromStr for Month {
}
}
}

#[cfg(test)]
mod tests {
use crate::format::{Colon, OffsetPrecision, Pad, UtcOffsetFormat};
use crate::FixedOffset;

#[test]
fn test_offset_formatting() {
fn check_all(precision: OffsetPrecision, expected: [[&str; 7]; 12]) {
fn check(
precision: OffsetPrecision,
colons: Colon,
padding: Pad,
allow_zulu: bool,
offsets: [FixedOffset; 7],
expected: [&str; 7],
) {
let offset_format = UtcOffsetFormat { precision, colons, allow_zulu, padding };
for (offset, expected) in offsets.iter().zip(expected.iter()) {
let mut output = String::new();
offset_format.format(&mut output, *offset).unwrap();
assert_eq!(&output, expected);
}
}
// +03:45, -03:30, +11:00, -11:00:22, +02:34:26, -12:34:30, +00:00
let offsets = [
FixedOffset::east_opt(13_500).unwrap(),
FixedOffset::east_opt(-12_600).unwrap(),
FixedOffset::east_opt(39_600).unwrap(),
FixedOffset::east_opt(-39_622).unwrap(),
FixedOffset::east_opt(9266).unwrap(),
FixedOffset::east_opt(-45270).unwrap(),
FixedOffset::east_opt(0).unwrap(),
];
check(precision, Colon::Colon, Pad::Zero, false, offsets, expected[0]);
check(precision, Colon::Colon, Pad::Zero, true, offsets, expected[1]);
check(precision, Colon::Colon, Pad::Space, false, offsets, expected[2]);
check(precision, Colon::Colon, Pad::Space, true, offsets, expected[3]);
check(precision, Colon::Colon, Pad::None, false, offsets, expected[4]);
check(precision, Colon::Colon, Pad::None, true, offsets, expected[5]);
check(precision, Colon::None, Pad::Zero, false, offsets, expected[6]);
check(precision, Colon::None, Pad::Zero, true, offsets, expected[7]);
check(precision, Colon::None, Pad::Space, false, offsets, expected[8]);
check(precision, Colon::None, Pad::Space, true, offsets, expected[9]);
check(precision, Colon::None, Pad::None, false, offsets, expected[10]);
check(precision, Colon::None, Pad::None, true, offsets, expected[11]);
// `Colon::Maybe` should format the same as `Colon::None`
check(precision, Colon::Maybe, Pad::Zero, false, offsets, expected[6]);
check(precision, Colon::Maybe, Pad::Zero, true, offsets, expected[7]);
check(precision, Colon::Maybe, Pad::Space, false, offsets, expected[8]);
check(precision, Colon::Maybe, Pad::Space, true, offsets, expected[9]);
check(precision, Colon::Maybe, Pad::None, false, offsets, expected[10]);
check(precision, Colon::Maybe, Pad::None, true, offsets, expected[11]);
}
check_all(
OffsetPrecision::Hours,
[
["+03", "-03", "+11", "-11", "+02", "-12", "+00"],
["+03", "-03", "+11", "-11", "+02", "-12", "Z"],
[" +3", " -3", "+11", "-11", " +2", "-12", " +0"],
[" +3", " -3", "+11", "-11", " +2", "-12", "Z"],
["+3", "-3", "+11", "-11", "+2", "-12", "+0"],
["+3", "-3", "+11", "-11", "+2", "-12", "Z"],
["+03", "-03", "+11", "-11", "+02", "-12", "+00"],
["+03", "-03", "+11", "-11", "+02", "-12", "Z"],
[" +3", " -3", "+11", "-11", " +2", "-12", " +0"],
[" +3", " -3", "+11", "-11", " +2", "-12", "Z"],
["+3", "-3", "+11", "-11", "+2", "-12", "+0"],
["+3", "-3", "+11", "-11", "+2", "-12", "Z"],
],
);
check_all(
OffsetPrecision::Minutes,
[
["+03:45", "-03:30", "+11:00", "-11:00", "+02:34", "-12:35", "+00:00"],
["+03:45", "-03:30", "+11:00", "-11:00", "+02:34", "-12:35", "Z"],
[" +3:45", " -3:30", "+11:00", "-11:00", " +2:34", "-12:35", " +0:00"],
[" +3:45", " -3:30", "+11:00", "-11:00", " +2:34", "-12:35", "Z"],
["+3:45", "-3:30", "+11:00", "-11:00", "+2:34", "-12:35", "+0:00"],
["+3:45", "-3:30", "+11:00", "-11:00", "+2:34", "-12:35", "Z"],
["+0345", "-0330", "+1100", "-1100", "+0234", "-1235", "+0000"],
["+0345", "-0330", "+1100", "-1100", "+0234", "-1235", "Z"],
[" +345", " -330", "+1100", "-1100", " +234", "-1235", " +000"],
[" +345", " -330", "+1100", "-1100", " +234", "-1235", "Z"],
["+345", "-330", "+1100", "-1100", "+234", "-1235", "+000"],
["+345", "-330", "+1100", "-1100", "+234", "-1235", "Z"],
],
);
#[rustfmt::skip]
check_all(
OffsetPrecision::Seconds,
[
["+03:45:00", "-03:30:00", "+11:00:00", "-11:00:22", "+02:34:26", "-12:34:30", "+00:00:00"],
["+03:45:00", "-03:30:00", "+11:00:00", "-11:00:22", "+02:34:26", "-12:34:30", "Z"],
[" +3:45:00", " -3:30:00", "+11:00:00", "-11:00:22", " +2:34:26", "-12:34:30", " +0:00:00"],
[" +3:45:00", " -3:30:00", "+11:00:00", "-11:00:22", " +2:34:26", "-12:34:30", "Z"],
["+3:45:00", "-3:30:00", "+11:00:00", "-11:00:22", "+2:34:26", "-12:34:30", "+0:00:00"],
["+3:45:00", "-3:30:00", "+11:00:00", "-11:00:22", "+2:34:26", "-12:34:30", "Z"],
["+034500", "-033000", "+110000", "-110022", "+023426", "-123430", "+000000"],
["+034500", "-033000", "+110000", "-110022", "+023426", "-123430", "Z"],
[" +34500", " -33000", "+110000", "-110022", " +23426", "-123430", " +00000"],
[" +34500", " -33000", "+110000", "-110022", " +23426", "-123430", "Z"],
["+34500", "-33000", "+110000", "-110022", "+23426", "-123430", "+00000"],
["+34500", "-33000", "+110000", "-110022", "+23426", "-123430", "Z"],
],
);
check_all(
OffsetPrecision::OptionalMinutes,
[
["+03:45", "-03:30", "+11", "-11", "+02:34", "-12:35", "+00"],
["+03:45", "-03:30", "+11", "-11", "+02:34", "-12:35", "Z"],
[" +3:45", " -3:30", "+11", "-11", " +2:34", "-12:35", " +0"],
[" +3:45", " -3:30", "+11", "-11", " +2:34", "-12:35", "Z"],
["+3:45", "-3:30", "+11", "-11", "+2:34", "-12:35", "+0"],
["+3:45", "-3:30", "+11", "-11", "+2:34", "-12:35", "Z"],
["+0345", "-0330", "+11", "-11", "+0234", "-1235", "+00"],
["+0345", "-0330", "+11", "-11", "+0234", "-1235", "Z"],
[" +345", " -330", "+11", "-11", " +234", "-1235", " +0"],
[" +345", " -330", "+11", "-11", " +234", "-1235", "Z"],
["+345", "-330", "+11", "-11", "+234", "-1235", "+0"],
["+345", "-330", "+11", "-11", "+234", "-1235", "Z"],
],
);
check_all(
OffsetPrecision::OptionalSeconds,
[
["+03:45", "-03:30", "+11:00", "-11:00:22", "+02:34:26", "-12:34:30", "+00:00"],
["+03:45", "-03:30", "+11:00", "-11:00:22", "+02:34:26", "-12:34:30", "Z"],
[" +3:45", " -3:30", "+11:00", "-11:00:22", " +2:34:26", "-12:34:30", " +0:00"],
[" +3:45", " -3:30", "+11:00", "-11:00:22", " +2:34:26", "-12:34:30", "Z"],
["+3:45", "-3:30", "+11:00", "-11:00:22", "+2:34:26", "-12:34:30", "+0:00"],
["+3:45", "-3:30", "+11:00", "-11:00:22", "+2:34:26", "-12:34:30", "Z"],
["+0345", "-0330", "+1100", "-110022", "+023426", "-123430", "+0000"],
["+0345", "-0330", "+1100", "-110022", "+023426", "-123430", "Z"],
[" +345", " -330", "+1100", "-110022", " +23426", "-123430", " +000"],
[" +345", " -330", "+1100", "-110022", " +23426", "-123430", "Z"],
["+345", "-330", "+1100", "-110022", "+23426", "-123430", "+000"],
["+345", "-330", "+1100", "-110022", "+23426", "-123430", "Z"],
],
);
check_all(
OffsetPrecision::OptionalMinutesAndSeconds,
[
["+03:45", "-03:30", "+11", "-11:00:22", "+02:34:26", "-12:34:30", "+00"],
["+03:45", "-03:30", "+11", "-11:00:22", "+02:34:26", "-12:34:30", "Z"],
[" +3:45", " -3:30", "+11", "-11:00:22", " +2:34:26", "-12:34:30", " +0"],
[" +3:45", " -3:30", "+11", "-11:00:22", " +2:34:26", "-12:34:30", "Z"],
["+3:45", "-3:30", "+11", "-11:00:22", "+2:34:26", "-12:34:30", "+0"],
["+3:45", "-3:30", "+11", "-11:00:22", "+2:34:26", "-12:34:30", "Z"],
["+0345", "-0330", "+11", "-110022", "+023426", "-123430", "+00"],
["+0345", "-0330", "+11", "-110022", "+023426", "-123430", "Z"],
[" +345", " -330", "+11", "-110022", " +23426", "-123430", " +0"],
[" +345", " -330", "+11", "-110022", " +23426", "-123430", "Z"],
["+345", "-330", "+11", "-110022", "+23426", "-123430", "+0"],
["+345", "-330", "+11", "-110022", "+23426", "-123430", "Z"],
],
);
}
}

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