readme, code structuring

Cargo.toml

@@ -2,12 +2,14 @@
 name = "latlon"
 version = "0.1.0"
 authors = ["Ondřej Hruška <ondra@ondrovo.com>"]
+description = "Parse latitude/longitude from many common formats"
 edition = "2018"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+readme = "README.md"
+keywords = ["gps", "geo", "geography", "geospatial", "location", "parse"]
+categories = ["parser-implementations", "science"]
+license = "MIT"
 
 [dependencies]
 geo-types = "0.5.0"
 regex = "1.3.7"
 lazy_static = "1.4.0"
-

README.md

@@ -0,0 +1,43 @@
+# latlon
+
+Parse geographic coordinates from string.
+
+A wide range of commonly used formats is supported.
+See the unit tests for a complete reference.
+
+If a format you need is missing, please submit a merge request (including unit tests).
+
+## Usage
+
+```rust
+// parse a coord
+let coord : geo::Point = latlon::parse("N 50°5.30385', E 14°26.94732'").unwrap();
+
+// individual lat/lng parsing
+let lat : f64 = latlon::parse_lat("N 50°5.30385'").unwrap();
+let lng : f64 = latlon::parse_lng("E 14°26.94732'").unwrap();
+```
+
+## Supported formats
+
+Example of supported formats:
+
+- `40° 26′ 46″ N 79° 58′ 56″ W`
+- `N 40° 26′ 46″ W 79° 58′ 56″`
+- `40° 26.767' N 79° 58.933' W`
+- `40° 26′ 46″ 79° 58′ 56″`, `40° 26′ 46″, 79° 58′ 56″`, ...
+- `N 40° 26.767' W 79° 58.933'`
+- `40° 26.767' 79° 58.933'`, `40° 26.767', 79° 58.933'`, ...
+- `N 40.446° W 79.982°`
+- `40.446° N 79.982° W`
+- `40.446° 79.982°`, `40.446,79.982`, etc.
+
+## Parser rules
+- All formats support negative degrees (preceded by a minus sign). Positive latitude is North, positive longitude is East.
+- Whitespace is optional and ignored, except for formats that would become unparsable.
+- Degree, minute and second symbols can be omitted.
+- Comma (`,`) may be used as an alternate decimal separator.
+- Unicode quotes (`’`, `”`) may be used in place of apostrophe and double quote (`'`, `"`)
+  for minutes and seconds.
+- The two coordinates can be separated by comma (`,`), semicolon (`;`), whitespace (` `), or nothing
+  at all, if not ambiguous.

src/errors.rs

@@ -0,0 +1,27 @@
+use std::fmt;
+use std::fmt::{Display, Formatter};
+use std::num::ParseFloatError;
+
+#[derive(Debug)]
+pub(crate) struct ParseErrorInternal;
+
+impl From<ParseFloatError> for ParseErrorInternal {
+    fn from(_: ParseFloatError) -> Self {
+        ParseErrorInternal
+    }
+}
+
+impl Display for ParseErrorInternal {
+    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+        f.write_str("Parse error")
+    }
+}
+
+#[derive(Debug)]
+pub struct GeoParseError<T: AsRef<str> + Display>(pub T);
+
+impl<T: AsRef<str> + Display> Display for GeoParseError<T> {
+    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+        write!(f, "Error parsing coordinates from {}", self.0)
+    }
+}

src/tests.rs

@@ -0,0 +1,303 @@
+use crate::{parse, parse_lat, parse_lng};
+use geo_types::Point;
+
+#[test]
+fn dms_ns_dms_ew() {
+    let reference = Point::new(-79.98222222222222, 40.44611111111111);
+
+    assert_eq!(reference, parse(r#"40° 26′ 46″ N 79° 58′ 56″ W"#).unwrap(), "normal");
+    assert_eq!(reference, parse(r#"40° 26’ 46″ N 79° 58’ 56″ W"#).unwrap(), "fancy apos");
+    assert_eq!(reference, parse(r#"40° 26′ 46″ N, 79° 58′ 56″ W"#).unwrap(), "comma");
+    assert_eq!(reference, parse(r#"40° 26′ 46″ N; 79° 58′ 56″ W"#).unwrap(), "semi");
+    assert_eq!(reference, parse(r#"40° 26′ 46″ N,79° 58′ 56″ W"#).unwrap(), "comma2");
+    assert_eq!(reference, parse(r#"40° 26′ 46″ N;79° 58′ 56″ W"#).unwrap(), "semi2");
+    assert_eq!(reference, parse(r#"40° 26′ 46″ N ,79° 58′ 56″ W"#).unwrap(), "comma2");
+    assert_eq!(reference, parse(r#"40° 26′ 46″ N ;79° 58′ 56″ W"#).unwrap(), "semi2");
+    assert_eq!(reference, parse(r#"40°26′46″N79°58′56″W"#).unwrap(), "compact");
+    assert_eq!(reference, parse(r#"40°26′46N79°58′56W"#).unwrap(), "compact, no sec mark");
+    assert_eq!(reference, parse(r#"40 26 46 N 79 58 56 W"#).unwrap(), "no symbols");
+    assert_eq!(reference, parse(r#"-40 26 46 S -79 58 56 E"#).unwrap(), "inverted");
+}
+
+#[test]
+fn ns_dms_ew_dms() {
+    let reference = Point::new(-79.98222222222222, 40.44611111111111);
+
+    assert_eq!(reference, parse(r#"N 40° 26′ 46″ W 79° 58′ 56″"#).unwrap(), "normal");
+    assert_eq!(reference, parse(r#"N 40° 26’ 46″ W 79° 58’ 56″"#).unwrap(), "fancy apos");
+    assert_eq!(reference, parse(r#"N 40° 26′ 46″, W 79° 58′ 56″"#).unwrap(), "comma");
+    assert_eq!(reference, parse(r#"N 40° 26′ 46″; W 79° 58′ 56″"#).unwrap(), "semi");
+    assert_eq!(reference, parse(r#"N 40° 26′ 46″,W 79° 58′ 56″"#).unwrap(), "comma2");
+    assert_eq!(reference, parse(r#"N 40° 26′ 46″;W 79° 58′ 56″"#).unwrap(), "semi2");
+    assert_eq!(reference, parse(r#"N 40° 26′ 46″ , W 79° 58′ 56″"#).unwrap(), "comma3");
+    assert_eq!(reference, parse(r#"N 40° 26′ 46″ ; W 79° 58′ 56″"#).unwrap(), "semi3");
+    assert_eq!(reference, parse(r#"N40°26′46″W79°58′56″"#).unwrap(), "compact");
+    assert_eq!(reference, parse(r#"N40°26′46W79°58′56"#).unwrap(), "compact, no sec mark");
+    assert_eq!(reference, parse(r#"N 40 26 46 W 79 58 56"#).unwrap(), "no symbols");
+    assert_eq!(reference, parse(r#"S -40 26 46 E -79 58 56"#).unwrap(), "inverted");
+}
+
+#[test]
+fn dms_dms() {
+    let reference = Point::new(79.98222222222222, 40.44611111111111);
+
+    assert_eq!(reference, parse(r#"40° 26′ 46″ 79° 58′ 56″"#).unwrap(), "normal");
+    assert_eq!(reference, parse(r#"40° 26’ 46″ 79° 58’ 56″"#).unwrap(), "fancy apos");
+    assert_eq!(reference, parse(r#"40° 26′ 46″, 79° 58′ 56″"#).unwrap(), "comma");
+    assert_eq!(reference, parse(r#"40° 26′ 46″; 79° 58′ 56″"#).unwrap(), "semi");
+    assert_eq!(reference, parse(r#"40° 26′ 46″,79° 58′ 56″"#).unwrap(), "comma2");
+    assert_eq!(reference, parse(r#"40° 26′ 46″;79° 58′ 56″"#).unwrap(), "semi2");
+    assert_eq!(reference, parse(r#"40° 26′ 46″ , 79° 58′ 56″"#).unwrap(), "comma3");
+    assert_eq!(reference, parse(r#"40° 26′ 46″ ; 79° 58′ 56″"#).unwrap(), "semi3");
+    assert_eq!(reference, parse(r#"40°26′46″79°58′56″"#).unwrap(), "compact");
+    assert_eq!(reference, parse(r#"40 26 46 79 58 56"#).unwrap(), "no symbols");
+}
+
+#[test]
+fn dm_ns_dm_ew() {
+    let reference = Point::new(-79.98221666666667, 40.44055);
+
+    assert_eq!(reference, parse(r#"40° 26.433′ N 79° 58.933′ W"#).unwrap(), "normal");
+    assert_eq!(reference, parse(r#"40° 26,433′ N 79° 58,933′ W"#).unwrap(), "comma dec");
+    assert_eq!(reference, parse(r#"40° 26.433’ N 79° 58.933’ W"#).unwrap(), "fancy apos");
+    assert_eq!(reference, parse(r#"40° 26.433′ N, 79° 58.933′ W"#).unwrap(), "comma");
+    assert_eq!(reference, parse(r#"40° 26,433′ N, 79° 58,933′ W"#).unwrap(), "comma dec and comma sep");
+    assert_eq!(reference, parse(r#"40° 26.433′ N; 79° 58.933′ W"#).unwrap(), "semi");
+    assert_eq!(reference, parse(r#"40° 26.433′ N, 79° 58.933′ W"#).unwrap(), "comma2");
+    assert_eq!(reference, parse(r#"40° 26.433′ N; 79° 58.933′ W"#).unwrap(), "semi2");
+    assert_eq!(reference, parse(r#"40° 26.433 N,79° 58.933′ W"#).unwrap(), "comma3");
+    assert_eq!(reference, parse(r#"40° 26.433 N;79° 58.933′ W"#).unwrap(), "semi3");
+    assert_eq!(reference, parse(r#"40° 26.433′N , 79° 58.933′ W"#).unwrap(), "comma4");
+    assert_eq!(reference, parse(r#"40° 26.433′N ; 79° 58.933′ W"#).unwrap(), "semi4");
+    assert_eq!(reference, parse(r#"40°26.433′N79°58.933′W"#).unwrap(), "compact");
+    assert_eq!(reference, parse(r#"40°26.433N79°58.933W"#).unwrap(), "compact, no min mark");
+    assert_eq!(reference, parse(r#"40 26.433 N 79 58.933 W"#).unwrap(), "no symbols");
+    assert_eq!(reference, parse(r#"-40 26.433 S -79 58.933 E"#).unwrap(), "inverted");
+}
+
+#[test]
+fn ns_dm_ew_dm() {
+    let reference = Point::new(-79.98221666666667, 40.44055);
+
+    assert_eq!(reference, parse(r#"N 40° 26.433′ W 79° 58.933′"#).unwrap(), "normal");
+    assert_eq!(reference, parse(r#"N 40° 26.433’ W 79° 58.933’"#).unwrap(), "fancy apos");
+    assert_eq!(reference, parse(r#"N 40° 26,433′ W 79° 58,933′"#).unwrap(), "comma dec");
+    assert_eq!(reference, parse(r#"N 40° 26.433′, W 79° 58.933′"#).unwrap(), "comma");
+    assert_eq!(reference, parse(r#"N 40° 26,433′, W 79° 58,933′"#).unwrap(), "comma dec and comma sep");
+    assert_eq!(reference, parse(r#"N 40° 26.433′; W 79° 58.933′"#).unwrap(), "semi");
+    assert_eq!(reference, parse(r#"N 40° 26.433′, W 79° 58.933′"#).unwrap(), "comma2");
+    assert_eq!(reference, parse(r#"N 40° 26.433′; W 79° 58.933′"#).unwrap(), "semi2");
+    assert_eq!(reference, parse(r#"N 40° 26.433 ,W 79° 58.933′"#).unwrap(), "comma3");
+    assert_eq!(reference, parse(r#"N 40° 26.433 ;W 79° 58.933′"#).unwrap(), "semi3");
+    assert_eq!(reference, parse(r#"N 40° 26.433′ , W 79° 58.933′"#).unwrap(), "comma4");
+    assert_eq!(reference, parse(r#"N 40° 26.433′ ; W 79° 58.933′"#).unwrap(), "semi4");
+    assert_eq!(reference, parse(r#"N40°26.433′W79°58.933′"#).unwrap(), "compact");
+    assert_eq!(reference, parse(r#"N40°26.433W79°58.933"#).unwrap(), "compact, no min mark");
+    assert_eq!(reference, parse(r#"N40 26.433W79 58.933"#).unwrap(), "no symbols");
+    assert_eq!(reference, parse(r#"S -40 26.433 E -79 58.933"#).unwrap(), "inverted");
+}
+
+#[test]
+fn dm_dm() {
+    let reference = Point::new(79.98221666666667, 40.44055);
+
+    assert_eq!(reference, parse(r#"40° 26.433′ 79° 58.933′"#).unwrap(), "normal");
+    assert_eq!(reference, parse(r#"40° 26.433’ 79° 58.933’"#).unwrap(), "fancy apos");
+    assert_eq!(reference, parse(r#"40° 26,433′ 79° 58,933′"#).unwrap(), "comma dec");
+    assert_eq!(reference, parse(r#"40° 26.433′, 79° 58.933′"#).unwrap(), "comma");
+    assert_eq!(reference, parse(r#"40° 26,433′, 79° 58,933′"#).unwrap(), "comma dec and comma sep");
+    assert_eq!(reference, parse(r#"40° 26.433′; 79° 58.933′"#).unwrap(), "semi");
+    assert_eq!(reference, parse(r#"40° 26.433′, 79° 58.933′"#).unwrap(), "comma2");
+    assert_eq!(reference, parse(r#"40° 26.433′; 79° 58.933′"#).unwrap(), "semi2");
+    assert_eq!(reference, parse(r#"40° 26.433 ,79° 58.933′"#).unwrap(), "comma3");
+    assert_eq!(reference, parse(r#"40° 26.433 ;79° 58.933′"#).unwrap(), "semi3");
+    assert_eq!(reference, parse(r#"40° 26.433′ , 79° 58.933′"#).unwrap(), "comma4");
+    assert_eq!(reference, parse(r#"40° 26.433′ ; 79° 58.933′"#).unwrap(), "semi4");
+    assert_eq!(reference, parse(r#"40°26.433′79°58.933′"#).unwrap(), "compact");
+    assert_eq!(reference, parse(r#"40 26.433 79 58.933"#).unwrap(), "no symbols");
+}
+
+#[test]
+fn d_ns_d_ew() {
+    let reference = Point::new(-79.9822, 40.44055);
+
+    assert_eq!(reference, parse(r#"40.44055° N 79.9822° W"#).unwrap(), "normal");
+    assert_eq!(reference, parse(r#"40,44055° N 79,9822° W"#).unwrap(), "comma dec");
+    assert_eq!(reference, parse(r#"40.44055 N 79.9822 W"#).unwrap(), "no deg");
+    assert_eq!(reference, parse(r#"40.44055° N, 79.9822° W"#).unwrap(), "comma");
+    assert_eq!(reference, parse(r#"40,44055° N, 79,9822° W"#).unwrap(), "comma comma");
+    assert_eq!(reference, parse(r#"40.44055° N; 79.9822° W"#).unwrap(), "semi");
+    assert_eq!(reference, parse(r#"40.44055° N,79.9822° W"#).unwrap(), "comma2");
+    assert_eq!(reference, parse(r#"40.44055° N;79.9822° W"#).unwrap(), "semi2");
+    assert_eq!(reference, parse(r#"40.44055° N ,79.9822° W"#).unwrap(), "comma3");
+    assert_eq!(reference, parse(r#"40.44055° N ;79.9822° W"#).unwrap(), "semi3");
+    assert_eq!(reference, parse(r#"40.44055N79.9822W"#).unwrap(), "compact");
+    assert_eq!(reference, parse(r#"-40.44055° S -79.9822° E"#).unwrap(), "inverted");
+}
+
+#[test]
+fn d_d() {
+    let reference = Point::new(79.9822, 40.44055);
+
+    assert_eq!(reference, parse(r#"40.44055° 79.9822°"#).unwrap(), "normal");
+    assert_eq!(reference, parse(r#"40,44055° 79,9822°"#).unwrap(), "comma dec");
+    assert_eq!(reference, parse(r#"40.44055 79.9822"#).unwrap(), "no deg");
+    assert_eq!(reference, parse(r#"40.44055°, 79.9822°"#).unwrap(), "comma");
+    assert_eq!(reference, parse(r#"40,44055°, 79,9822°"#).unwrap(), "comma comma");
+    assert_eq!(reference, parse(r#"40.44055°; 79.9822°"#).unwrap(), "semi");
+    assert_eq!(reference, parse(r#"40.44055°,79.9822°"#).unwrap(), "comma2");
+    assert_eq!(reference, parse(r#"40.44055°;79.9822°"#).unwrap(), "semi2");
+    assert_eq!(reference, parse(r#"40.44055° ,79.9822°"#).unwrap(), "comma3");
+    assert_eq!(reference, parse(r#"40.44055° ;79.9822°"#).unwrap(), "semi3");
+}
+
+
+// ------ lat / lng separate ------
+
+#[test]
+fn dms_nsew() {
+    let reference = 40.44611111111111;
+
+    assert_eq!(reference, parse_lat(r#"40° 26′ 46″ N"#).unwrap(), "normal");
+    assert_eq!(reference, parse_lat(r#"40° 26’ 46″ N"#).unwrap(), "fancy apos");
+    assert_eq!(reference, parse_lat(r#"40°26′46″N"#).unwrap(), "compact");
+    assert_eq!(reference, parse_lat(r#"40°26′46N"#).unwrap(), "compact, no sec mark");
+    assert_eq!(reference, parse_lat(r#"40 26 46 N"#).unwrap(), "no symbols");
+    assert_eq!(reference, parse_lat(r#"-40 26 46 S"#).unwrap(), "inverted");
+
+    assert_eq!(reference, parse_lng(r#"40° 26′ 46″ E"#).unwrap(), "normal");
+    assert_eq!(reference, parse_lng(r#"40° 26’ 46″ E"#).unwrap(), "fancy apos");
+    assert_eq!(reference, parse_lng(r#"40°26′46″E"#).unwrap(), "compact");
+    assert_eq!(reference, parse_lng(r#"40°26′46E"#).unwrap(), "compact, no sec mark");
+    assert_eq!(reference, parse_lng(r#"40 26 46 E"#).unwrap(), "no symbols");
+    assert_eq!(reference, parse_lng(r#"-40 26 46 W"#).unwrap(), "inverted");
+}
+
+#[test]
+fn nsew_dms() {
+    let reference = 40.44611111111111;
+
+    assert_eq!(reference, parse_lat(r#"N 40° 26′ 46″"#).unwrap(), "normal");
+    assert_eq!(reference, parse_lat(r#"N 40° 26’ 46″"#).unwrap(), "fancy apos");
+    assert_eq!(reference, parse_lat(r#"N40°26′46"#).unwrap(), "compact, no sec mark");
+    assert_eq!(reference, parse_lat(r#"N 40 26 46"#).unwrap(), "no symbols");
+    assert_eq!(reference, parse_lat(r#"S -40 26 46"#).unwrap(), "inverted");
+
+    assert_eq!(reference, parse_lng(r#"E 40° 26′ 46″"#).unwrap(), "normal");
+    assert_eq!(reference, parse_lng(r#"E 40° 26’ 46″"#).unwrap(), "fancy apos");
+    assert_eq!(reference, parse_lng(r#"E40°26′46"#).unwrap(), "compact, no sec mark");
+    assert_eq!(reference, parse_lng(r#"E 40 26 46"#).unwrap(), "no symbols");
+    assert_eq!(reference, parse_lng(r#"W -40 26 46"#).unwrap(), "inverted");
+}
+
+#[test]
+fn dms() {
+    let reference = 40.44611111111111;
+    let ref_neg = -reference;
+
+    assert_eq!(reference, parse_lat(r#"40° 26′ 46″"#).unwrap(), "normal");
+    assert_eq!(reference, parse_lat(r#"40° 26’ 46″"#).unwrap(), "fancy apos");
+    assert_eq!(reference, parse_lat(r#"40°26′46″"#).unwrap(), "compact");
+    assert_eq!(reference, parse_lat(r#"40 26 46"#).unwrap(), "no symbols");
+    assert_eq!(ref_neg, parse_lat(r#"-40° 26′ 46″"#).unwrap(), "neg");
+
+    assert_eq!(reference, parse_lng(r#"40° 26′ 46″"#).unwrap(), "normal");
+    assert_eq!(reference, parse_lng(r#"40° 26’ 46″"#).unwrap(), "fancy apos");
+    assert_eq!(reference, parse_lng(r#"40°26′46″"#).unwrap(), "compact");
+    assert_eq!(reference, parse_lng(r#"40 26 46"#).unwrap(), "no symbols");
+    assert_eq!(ref_neg, parse_lng(r#"-40° 26′ 46″"#).unwrap(), "neg");
+}
+
+#[test]
+fn dm_nsew() {
+    let reference = 40.44055;
+
+    assert_eq!(reference, parse_lat(r#"40° 26.433′ N"#).unwrap(), "normal");
+    assert_eq!(reference, parse_lat(r#"40° 26,433′ N"#).unwrap(), "comma dec");
+    assert_eq!(reference, parse_lat(r#"40° 26.433’ N"#).unwrap(), "fancy apos");
+    assert_eq!(reference, parse_lat(r#"40°26.433′N"#).unwrap(), "compact");
+    assert_eq!(reference, parse_lat(r#"40°26.433N"#).unwrap(), "compact, no min mark");
+    assert_eq!(reference, parse_lat(r#"40 26.433 N"#).unwrap(), "no symbols");
+    assert_eq!(reference, parse_lat(r#"-40 26.433 S"#).unwrap(), "inverted");
+
+    assert_eq!(reference, parse_lng(r#"40° 26.433′ E"#).unwrap(), "normal");
+    assert_eq!(reference, parse_lng(r#"40° 26,433′ E"#).unwrap(), "comma dec");
+    assert_eq!(reference, parse_lng(r#"40° 26.433’ E"#).unwrap(), "fancy apos");
+    assert_eq!(reference, parse_lng(r#"40°26.433′E"#).unwrap(), "compact");
+    assert_eq!(reference, parse_lng(r#"40°26.433E"#).unwrap(), "compact, no min mark");
+    assert_eq!(reference, parse_lng(r#"40 26.433 E"#).unwrap(), "no symbols");
+    assert_eq!(reference, parse_lng(r#"-40 26.433 W"#).unwrap(), "inverted");
+}
+
+#[test]
+fn nsew_dm() {
+    let reference = 40.44055;
+
+    assert_eq!(reference, parse_lat(r#"N 40° 26.433′"#).unwrap(), "normal");
+    assert_eq!(reference, parse_lat(r#"N 40° 26.433’"#).unwrap(), "fancy apos");
+    assert_eq!(reference, parse_lat(r#"N 40° 26,433′"#).unwrap(), "comma dec");
+    assert_eq!(reference, parse_lat(r#"N40°26.433′"#).unwrap(), "compact");
+    assert_eq!(reference, parse_lat(r#"N40°26.433"#).unwrap(), "compact, no min mark");
+    assert_eq!(reference, parse_lat(r#"N40 26.433"#).unwrap(), "no symbols");
+    assert_eq!(reference, parse_lat(r#"S -40 26.433"#).unwrap(), "inverted");
+
+    assert_eq!(reference, parse_lng(r#"E 40° 26.433′"#).unwrap(), "normal");
+    assert_eq!(reference, parse_lng(r#"E 40° 26.433’"#).unwrap(), "fancy apos");
+    assert_eq!(reference, parse_lng(r#"E 40° 26,433′"#).unwrap(), "comma dec");
+    assert_eq!(reference, parse_lng(r#"E40°26.433′"#).unwrap(), "compact");
+    assert_eq!(reference, parse_lng(r#"E40°26.433"#).unwrap(), "compact, no min mark");
+    assert_eq!(reference, parse_lng(r#"E40 26.433"#).unwrap(), "no symbols");
+    assert_eq!(reference, parse_lng(r#"W -40 26.433"#).unwrap(), "inverted");
+}
+
+#[test]
+fn dm() {
+    let reference = 40.44055;
+    let ref_neg = -reference;
+
+    assert_eq!(reference, parse_lat(r#"40° 26.433′"#).unwrap(), "normal");
+    assert_eq!(reference, parse_lat(r#"40° 26.433’"#).unwrap(), "fancy apos");
+    assert_eq!(reference, parse_lat(r#"40° 26,433′"#).unwrap(), "comma dec");
+    assert_eq!(reference, parse_lat(r#"40°26.433′"#).unwrap(), "compact");
+    assert_eq!(reference, parse_lat(r#"40 26.433"#).unwrap(), "no symbols");
+    assert_eq!(ref_neg, parse_lat(r#"-40° 26.433′"#).unwrap(), "neg");
+
+    assert_eq!(reference, parse_lng(r#"40° 26.433′"#).unwrap(), "normal");
+    assert_eq!(reference, parse_lng(r#"40° 26.433’"#).unwrap(), "fancy apos");
+    assert_eq!(reference, parse_lng(r#"40° 26,433′"#).unwrap(), "comma dec");
+    assert_eq!(reference, parse_lng(r#"40°26.433′"#).unwrap(), "compact");
+    assert_eq!(reference, parse_lng(r#"40 26.433"#).unwrap(), "no symbols");
+    assert_eq!(ref_neg, parse_lng(r#"-40° 26.433′"#).unwrap(), "neg");
+}
+
+#[test]
+fn d_nsew() {
+    let reference = 40.44055;
+    assert_eq!(reference, parse_lat(r#"40.44055° N"#).unwrap(), "normal");
+    assert_eq!(reference, parse_lat(r#"40,44055° N"#).unwrap(), "comma dec");
+    assert_eq!(reference, parse_lat(r#"40.44055 N"#).unwrap(), "no deg");
+    assert_eq!(reference, parse_lat(r#"40.44055N"#).unwrap(), "compact");
+    assert_eq!(reference, parse_lat(r#"-40.44055° S"#).unwrap(), "inverted");
+
+    assert_eq!(reference, parse_lng(r#"40.44055° E"#).unwrap(), "normal");
+    assert_eq!(reference, parse_lng(r#"40,44055° E"#).unwrap(), "comma dec");
+    assert_eq!(reference, parse_lng(r#"40.44055 E"#).unwrap(), "no deg");
+    assert_eq!(reference, parse_lng(r#"40.44055E"#).unwrap(), "compact");
+    assert_eq!(reference, parse_lng(r#"-40.44055° W"#).unwrap(), "inverted");
+}
+
+#[test]
+fn d() {
+    let reference = 40.44055;
+    let ref_neg = -reference;
+
+    assert_eq!(reference, parse_lat(r#"40.44055°"#).unwrap(), "normal");
+    assert_eq!(reference, parse_lat(r#"40,44055°"#).unwrap(), "comma dec");
+    assert_eq!(reference, parse_lat(r#"40.44055"#).unwrap(), "no deg");
+    assert_eq!(ref_neg, parse_lat(r#"-40.44055"#).unwrap(), "no deg");
+
+    assert_eq!(reference, parse_lng(r#"40.44055°"#).unwrap(), "normal");
+    assert_eq!(reference, parse_lng(r#"40,44055°"#).unwrap(), "comma dec");
+    assert_eq!(reference, parse_lng(r#"40.44055"#).unwrap(), "no deg");
+    assert_eq!(ref_neg, parse_lng(r#"-40.44055"#).unwrap(), "no deg");
+}