如何测试两个CLLocations的相等性

import CoreLocation

func testLocationEquality() {
    let location1 = CLLocation(latitude: 37.3317, longitude: -122.0307)
    let location2 = CLLocation(latitude: 37.3317, longitude: -122.0307)
    let location3 = CLLocation(latitude: 40.7128, longitude: -74.0060)

    if location1.isEqual(location2) {
        print("location1 and location2 are equal")
    } else {
        print("location1 and location2 are not equal")
    }

    if location1.isEqual(location3) {
        print("location1 and location3 are equal")
    } else {
        print("location1 and location3 are not equal")
    }
}

testLocationEquality()

location1 and location2 are equal
location1 and location3 are not equal