Add geo utils

Sources/SwiftKit/Geo/CLLocationCoordinate2D+Valid.swift

@@ -0,0 +1,28 @@
+//
+//  CLLocationCoordinate2D+Valid.swift
+//  SwiftKit
+//
+//  Created by Daniel Saidi on 2015-09-18.
+//  Copyright © 2020 Daniel Saidi. All rights reserved.
+//
+
+import CoreLocation
+
+public extension CLLocationCoordinate2D {
+    
+    /**
+     Check if the coordinate is valid. This is a best effort
+     that checks so that not both the latitude and longitude
+     are not or any extremes.
+     */
+    var isValid: Bool {
+        isValid(latitude) && isValid(longitude)
+    }
+}
+
+private extension CLLocationCoordinate2D {
+
+    func isValid(_ degrees: CLLocationDegrees) -> Bool {
+        degrees != 0 && degrees != 180 && degrees != -180
+    }
+}

Sources/SwiftKit/Geo/WorldCoordinate.swift

@@ -0,0 +1,30 @@
+//
+//  WorldCoordinate.swift
+//  SwiftKit
+//
+//  Created by Daniel Saidi on 2015-10-04.
+//  Copyright © 2020 Daniel Saidi. All rights reserved.
+//
+
+import CoreLocation
+
+/**
+ This struct can be used to represent world coordinates, but
+ without bloating `CLLocationCoordinate2D` with static props.
+ 
+ The reason to why this is a struct and not an enum, is that
+ it simplifies extending it with new coordinates in any apps
+ that use custom coordinates.
+ */
+public struct WorldCoordinate {
+    
+    public let coordinate: CLLocationCoordinate2D
+}
+
+public extension WorldCoordinate {
+    
+    static var manhattan: WorldCoordinate { .init(coordinate: CLLocationCoordinate2D(latitude: 40.7590615, longitude: -73.969231)) }
+    static var newYork: WorldCoordinate { .init(coordinate: CLLocationCoordinate2D(latitude: 40.7033127, longitude: -73.979681)) }
+    static var sanFransisco: WorldCoordinate { .init(coordinate: CLLocationCoordinate2D(latitude: 37.7796828, longitude: -122.4000062)) }
+    static var tokyo: WorldCoordinate { .init(coordinate: CLLocationCoordinate2D(latitude: 35.673, longitude: 139.710)) }
+}

Tests/SwiftKitTests/Date/Date+CompareTests.swift

@@ -36,8 +36,8 @@ class DateComparingTests: QuickSpec {
                 let date1 = Date(timeIntervalSince1970: 0)
                 let date2 = Date(timeIntervalSince1970: 1)
                 let date3 = Date(timeIntervalSince1970: 0)
-                expect(date1.isSameAs(date2)).to(beFalse())
+                expect(date1.isSame(as: date2)).to(beFalse())
-                expect(date1.isSameAs(date3)).to(beTrue())
+                expect(date1.isSame(as: date3)).to(beTrue())
             }
         }
     }

Tests/SwiftKitTests/Geo/CLLocationCoordinate2D+ValidTests.swift

@@ -0,0 +1,41 @@
+//
+//  CLLocationCoordinate2D+ValidTests.swift
+//  SwiftKitTests
+//
+//  Created by Daniel Saidi on 2018-10-19.
+//  Copyright © 2020 Daniel Saidi. All rights reserved.
+//
+
+import Quick
+import Nimble
+import SwiftKit
+import CoreLocation
+
+class CLLocationCoordinate2D_ValidTests: QuickSpec {
+    
+    override func spec() {
+        
+        describe("Coordinate validation") {
+            
+            func result(for lat: CLLocationDegrees, _ long: CLLocationDegrees) -> Bool {
+                CLLocationCoordinate2D(latitude: lat, longitude: long).isValid
+            }
+            
+            it("is invalid if latitude is invalid") {
+                expect(result(for: 0, 120)).to(beFalse())
+                expect(result(for: 180, 120)).to(beFalse())
+                expect(result(for: -180, 120)).to(beFalse())
+            }
+            
+            it("is invalid if longitude is invalid") {
+                expect(result(for: 120, 0)).to(beFalse())
+                expect(result(for: 120, 180)).to(beFalse())
+                expect(result(for: 120, -180)).to(beFalse())
+            }
+            
+            it("is valid if both components are valid") {
+                expect(result(for: 120, 120)).to(beTrue())
+            }
+        }
+    }
+}