import XCTest

class settestTests: XCTestCase {

    func testExample() throws {

        struct Object: Equatable, Hashable {
            let name: String
            let completed: Bool  
            static func == (lhs: Object, rhs: Object) -> Bool {
                print("Comparing \(lhs.name) == \(rhs.name)")
                return lhs.name == rhs.name
            }
            public func hash(into hasher: inout Hasher) {
                hasher.combine(name)
            }
        }
        
        let firstObject = Object(name: "apples", completed: false)
        let secondObject = Object(name: "apples", completed: true)
        var set = Set<Object>()
        set.insert(firstObject)
        // set.insert(secondObject) // Adds "duplicate" object
        set.update(with: secondObject) // Also adds "duplicate" object
        print(set) // Why are two "equal" objects added to the set?
    }
}

Test Case '-[settestTests.settestTests testExample]' started.
[settestTests.settestTests.(unknown context at $1020e8c18).(unknown context at $1020e8c60).Object(name: "apples", completed: false), settestTests.settestTests.(unknown context at $1020e8c18).(unknown context at $1020e8c60).Object(name: "apples", completed: true)]
Test Case '-[settestTests.settestTests testExample]' passed (0.002 seconds).