TestSchedulers for Combine

EntwineTestSchedulerExampleTests.swift

import XCTest
import Combine
import Entwine
import EntwineTest

class EntwineTestSchedulerExampleTests: XCTestCase {
  
  func testSchedulerInjection() {
    let scheduler = TestScheduler(initialClock: 0)
    var didSink = false
    let sut = Just<Void>(())
      // Inject the scheduler as a Dependency to your system under test
      .delay(for: 1, scheduler: scheduler) 
      .sink { _ in
      didSink = true
    }
    scheduler.resume()
    XCTAssertTrue(didSink)
  }
}