session-ios/SessionUtilitiesKitTests/General/DependenciesSpec.swift

// Copyright © 2023 Rangeproof Pty Ltd. All rights reserved.

import Foundation

import Quick
import Nimble

@testable import SessionUtilitiesKit

// These tests seem pointless but we want to make sure we don't modify the logic in
// such a way that the `dateNow` property gets incorrectly fixed as that will result
// in the `JobRunner` and `Poller` classes breaking
class DependenciesSpec: QuickSpec {
    override class func spec() {
        // MARK: Configuration
        
        @TestState var dependencies: Dependencies! = Dependencies.createEmpty()
        
        // MARK: - Dependencies
        describe("Dependencies") {
            // MARK: -- when accessing dateNow
            context("when accessing dateNow") {
                // MARK: ---- creates a new date every time
                it("creates a new date every time") {
                    let date1 = dependencies.dateNow
                    Thread.sleep(forTimeInterval: 0.05)
                    let date2 = dependencies.dateNow
                    
                    expect(date1.timeIntervalSince1970).toNot(equal(date2.timeIntervalSince1970))
                }
            
                it("only has read access") {
                    // It looks like when reflecting any computed properties will actually be omitted
                    // so we just need to make sure we don't find a 'dateNow' property
                    let mirror = Mirror(reflecting: dependencies!)
                    let mutableDateNowChild: Mirror.Child? = mirror.children
                        .first { label, _ in label == "dateNow" }
                    
                    expect(mutableDateNowChild).to(beNil())
                }
            }
        }
    }
}