Open georgemp opened 11 months ago
Create an NSObject (in Swift) that conforms to Comparable and implements isEqual(to: Any?).
import Cocoa public class Tiger: NSObject { let id: Int let name: String init(id: Int, name: String) { self.id = id self.name = name } } extension Tiger { public override func isEqual(to object: Any?) -> Bool { guard let rhs = object as? Tiger else { return false } return self.id == rhs.id && self.name == rhs.name } } extension Tiger: Comparable { public static func < (lhs: Tiger, rhs: Tiger) -> Bool { return lhs.id < rhs.id } public static func == (lhs: Tiger, rhs: Tiger) -> Bool { return lhs.isEqual(to: rhs) } }
Compared instances of the Tiger object using predicate equal
import XCTest @testable import NimblePackage import Nimble final class NimblePackageTests: XCTestCase { func testExample() throws { let tiger1 = Tiger(id: 1, name: "Sher Khan") let tiger1Copy = Tiger(id: 1, name: "Sher Khan") let tiger2 = Tiger(id: 2, name: "Tigger") expect(tiger1 == tiger1Copy).to(beTrue()) //Passes expect(tiger1).to(equal(tiger1)) //Passes expect(tiger1).to(equal(tiger1Copy)) //Fails expect(tiger1 != tiger2).to(beTrue()) //Passes } }
Expected the objects to be compared using the implementation of the Equatable protocol and to return true.
Instead, they are compared by pointer to see if they are the same object and returns false.
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What did you do?
Create an NSObject (in Swift) that conforms to Comparable and implements isEqual(to: Any?).
Compared instances of the Tiger object using predicate equal
What did you expect to happen?
Expected the objects to be compared using the implementation of the Equatable protocol and to return true.
What actually happened instead?
Instead, they are compared by pointer to see if they are the same object and returns false.
Environment
List the software versions you're using:
Please also mention which package manager you used and its version. Delete the other package managers in this list: