108 lines
3.4 KiB
Rust
108 lines
3.4 KiB
Rust
use common::test_events;
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use s2::cellid::CellID;
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use xpin::Error;
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use xpin::{Address, CELLID_LEVEL};
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#[macro_use]
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mod common;
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use common::approx_geodetic_difference_m;
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use common::ALLOWED_DISTANCE_ERROR_M;
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use common::CELLID_LEVEL_23_BITMASK;
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use common::CELLID_LEVEL_23_END_BIT;
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#[test]
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fn test_invalid_lat_lon() {
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// Latitudes/longitudes are wrapped, so this is okay
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assert!(Address::from_lat_lon(1.0_f64, 400.0_f64).is_ok());
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assert_eq!(
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Address::from_lat_lon(f64::INFINITY, 400.0_f64),
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Err(Error::NaNLatLng)
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);
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assert_eq!(
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Address::from_lat_lon(1.0_f64, f64::NAN),
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Err(Error::NaNLatLng)
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);
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}
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#[test]
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fn test_decoding_lat_lon() {
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let mut max_error_m = f64::MIN;
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let mut min_error_m = f64::MAX;
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for (idx, entry) in test_events().iter().enumerate() {
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eprintln!("Testing row {idx}");
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let addr = Address::from_lat_lon(entry.lat, entry.lon).unwrap();
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let addr_latlon = addr.as_lat_lon();
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// The difference between the input lat/lon and the encoded-then-decoded lat/lon
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// This distance is essentially the error
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// If you pick a point on the map, this is how far off the encoded point actually represents
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let difference_m = approx_geodetic_difference_m(addr_latlon, (entry.lat, entry.lon));
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// Compute the max and min differences for fun
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if difference_m > max_error_m {
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eprintln!("Setting max to {difference_m}");
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max_error_m = difference_m;
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}
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if difference_m < min_error_m {
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min_error_m = difference_m;
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}
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eprintln!("Distance in meters: {:?}", difference_m);
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// Ensure the distance is not more than the allowed distance
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assert!(difference_m <= ALLOWED_DISTANCE_ERROR_M);
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// assert_eq!((entry.lat, entry.lon), (latlon.0, latlon.1));
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}
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eprintln!("Got max: {max_error_m} and min: {min_error_m}");
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}
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#[test]
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fn test_cellid_translation() {
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for (idx, entry) in test_events().iter().enumerate() {
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eprintln!("Testing row {idx}");
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let addr = Address::from_lat_lon(entry.lat, entry.lon).unwrap();
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let addr_cellid = addr.as_cellid();
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eprintln!(
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"Entry: ({},{}) => {:0>64b}",
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entry.lat, entry.lon, entry.cellid
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);
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eprintln!("\taddr: {addr}");
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// Make sure the rust s2 implementation is accurate
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assert_eq!(entry.cellid, CellID(entry.cellid).0);
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assert_eq!(
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(entry.cellid & CELLID_LEVEL_23_BITMASK) | CELLID_LEVEL_23_END_BIT,
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CellID(entry.cellid).parent(CELLID_LEVEL).0
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);
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// Make sure the address is at the right level
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assert_eq!(addr_cellid.level(), CELLID_LEVEL);
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// Next, check if creating an address from a cellid matches itself
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assert_eq!(addr, Address::from_cellid_u64(entry.cellid));
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assert_eq!(
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addr_cellid,
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Address::from_cellid_u64(entry.cellid).as_cellid()
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);
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// Now check if the actual cell id matches
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assert_eq_u64!(addr_cellid.0, CellID(entry.cellid).parent(CELLID_LEVEL).0);
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}
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}
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#[test]
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fn test_encoding() {
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for (_idx, entry) in test_events().iter().enumerate() {
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let addr = Address::from_lat_lon(entry.lat, entry.lon).unwrap();
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eprintln!("({}, {}) => {addr}", entry.lat, entry.lon);
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}
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// TODO:
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// assert!(false);
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}
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#[test]
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fn test_decoding() {}
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