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Add support for US cups

This commit is contained in:
Juhani Krekelä 2023-05-31 22:10:49 +03:00
parent 5555d0712e
commit 1c3315d19d
4 changed files with 19 additions and 0 deletions
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6
src/conversions.rs
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@ -123,6 +123,11 @@ fn get_conversion(unit: NonMetric) -> Conversion {
from: imperial_gallon_from,
to: MetricQuantity { amount: imperial_gallon_to, unit: Metric::Litre },
},
NonMetric::USCup => Conversion {
offset: 0.0,
from: 2.0 * 2.0 * 4.0 * us_gallon_from,
to: MetricQuantity { amount: us_gallon_to, unit: Metric::Litre },
},
NonMetric::USLiquidPint => Conversion {
offset: 0.0,
from: 2.0 * 4.0 * us_gallon_from,
@ -213,6 +218,7 @@ mod test {
Test(NonMetric::ImperialPint, 0.56826125),
Test(NonMetric::ImperialQuart, 1.1365225),
Test(NonMetric::ImperialGallon, 4.54609),
Test(NonMetric::USCup, 0.2365882365),
Test(NonMetric::USLiquidPint, 0.473176473),
Test(NonMetric::USLiquidQuart, 0.946352946),
Test(NonMetric::USGallon, 3.785411784),

2
src/lib.rs
View File

@ -89,6 +89,7 @@ fn unit_to_name(unit: NonMetric) -> &'static str {
NonMetric::ImperialPint => "imperial pints",
NonMetric::ImperialQuart => "imperial quarts",
NonMetric::ImperialGallon => "imperial gallons",
NonMetric::USCup => "US cups",
NonMetric::USLiquidPint => "US liquid pints",
NonMetric::USLiquidQuart => "US liquid quarts",
NonMetric::USGallon => "US gallons",
@ -138,6 +139,7 @@ mod test {
assert_eq!(run("1 imp pt"), Ok("5.683 dl".to_string()));
assert_eq!(run("1 imp qt"), Ok("1.137 l".to_string()));
assert_eq!(run("1 imp gal"), Ok("4.546 l".to_string()));
assert_eq!(run("1 US cup"), Ok("2.366 dl".to_string()));
assert_eq!(run("1 US pt"), Ok("4.732 dl".to_string()));
assert_eq!(run("1 US qt"), Ok("9.464 dl".to_string()));
assert_eq!(run("1 US gal"), Ok("3.785 l".to_string()));

10
src/parse.rs
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@ -205,6 +205,11 @@ fn parse_unit(input: String) -> Result<NonMetric, ParseError> {
"imperial gallons" => Ok(NonMetric::ImperialGallon),
"imp gal" => Ok(NonMetric::ImperialGallon),
"US cup" => Ok(NonMetric::USCup),
"US cups" => Ok(NonMetric::USCup),
"us cup" => Ok(NonMetric::USCup),
"us cups" => Ok(NonMetric::USCup),
"US liquid pint" => Ok(NonMetric::USLiquidPint),
"US liquid pints" => Ok(NonMetric::USLiquidPint),
"US pint" => Ok(NonMetric::USLiquidPint),
@ -490,6 +495,11 @@ mod test {
assert_eq!(parse_unit("imperial gallons".to_string()), Ok(NonMetric::ImperialGallon));
assert_eq!(parse_unit("imp gal".to_string()), Ok(NonMetric::ImperialGallon));
assert_eq!(parse_unit("US cup".to_string()), Ok(NonMetric::USCup));
assert_eq!(parse_unit("US cups".to_string()), Ok(NonMetric::USCup));
assert_eq!(parse_unit("us cup".to_string()), Ok(NonMetric::USCup));
assert_eq!(parse_unit("us cups".to_string()), Ok(NonMetric::USCup));
assert_eq!(parse_unit("US liquid pint".to_string()), Ok(NonMetric::USLiquidPint));
assert_eq!(parse_unit("US liquid pints".to_string()), Ok(NonMetric::USLiquidPint));
assert_eq!(parse_unit("US pint".to_string()), Ok(NonMetric::USLiquidPint));

1
src/units.rs
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@ -34,6 +34,7 @@ pub enum NonMetric {
ImperialPint,
ImperialQuart,
ImperialGallon,
USCup,
USLiquidPint,
USLiquidQuart,
USGallon,