   func testDidBecomeActive() {
     XCTAssert(
       SessionTestCase
-      .statesFrom { $0.applicationDidBecomeActive(UIApplication.shared) }
+      .statesFromCall { $0.applicationDidBecomeActive(UIApplication.shared) }
       .map { $0.state }
       ==
       [.none(.awaitingLaunch), .did(.active), .none(.active)]

  func testWillEnterBackground() {
    XCTAssert(
      SessionTestCase
      .statesFrom { $0.applicationWillEnterForeground(UIApplication.shared) }
      .map { $0.state }
      ==
      [.none(.awaitingLaunch), .will(.active)]

    var z = y; z.isIgnoringUserEvents = false
    
    XCTAssert(
      SessionTestCase.statesFrom(stream: Observable.of(x, y, x))
      .map { $0.isIgnoringUserEvents }
      ==
      [
