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ProjectNavigatorViewModelTests.swift
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ProjectNavigatorViewModelTests.swift
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// swiftlint:disable force_unwrapping
@testable import KsApi
@testable import Library
@testable import ReactiveExtensions_TestHelpers
import Prelude
import ReactiveSwift
import Result
import UIKit
import XCTest
internal final class ProjectNavigatorViewModelTests: TestCase {
fileprivate let vm: ProjectNavigatorViewModelType = ProjectNavigatorViewModel()
fileprivate let cancelInteractiveTransition = TestObserver<(), NoError>()
fileprivate let dismissViewController = TestObserver<(), NoError>()
fileprivate let finishInteractiveTransition = TestObserver<(), NoError>()
private let notifyDelegateTransitionedToProjectIndex = TestObserver<Int, NoError>()
fileprivate let setInitialPagerViewController = TestObserver<(), NoError>()
fileprivate let setNeedsStatusBarAppearanceUpdate = TestObserver<(), NoError>()
fileprivate let setTransitionAnimatorIsInFlight = TestObserver<Bool, NoError>()
fileprivate let updateInteractiveTransition = TestObserver<CGFloat, NoError>()
override func setUp() {
super.setUp()
self.vm.outputs.cancelInteractiveTransition.observe(self.cancelInteractiveTransition.observer)
self.vm.outputs.dismissViewController.observe(self.dismissViewController.observer)
self.vm.outputs.finishInteractiveTransition.observe(self.finishInteractiveTransition.observer)
self.vm.outputs.notifyDelegateTransitionedToProjectIndex
.observe(self.notifyDelegateTransitionedToProjectIndex.observer)
self.vm.outputs.setInitialPagerViewController.observe(self.setInitialPagerViewController.observer)
self.vm.outputs.setNeedsStatusBarAppearanceUpdate.observe(self.setNeedsStatusBarAppearanceUpdate.observer)
self.vm.outputs.setTransitionAnimatorIsInFlight.observe(self.setTransitionAnimatorIsInFlight.observer)
self.vm.outputs.updateInteractiveTransition.observe(self.updateInteractiveTransition.observer)
}
func testTransitionLifecycle_ScrollDown_BackUp() {
self.vm.inputs.configureWith(project: .template, refTag: .category)
self.vm.inputs.viewDidLoad()
self.cancelInteractiveTransition.assertValueCount(0)
self.dismissViewController.assertValueCount(0)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(0)
self.setTransitionAnimatorIsInFlight.assertValues([])
self.vm.inputs.panning(contentOffset: CGPoint(x: 0, y: 20),
translation: CGPoint(x: 0, y: -20),
velocity: CGPoint(x: 0, y: -20),
isDragging: true)
self.cancelInteractiveTransition.assertValueCount(0)
self.dismissViewController.assertValueCount(0)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(0)
self.setTransitionAnimatorIsInFlight.assertValues([false])
self.vm.inputs.panning(contentOffset: CGPoint(x: 0, y: 0),
translation: CGPoint(x: 0, y: 0),
velocity: CGPoint(x: 0, y: 20),
isDragging: true)
self.cancelInteractiveTransition.assertValueCount(0)
self.dismissViewController.assertValueCount(0)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(0)
self.setTransitionAnimatorIsInFlight.assertValues([false])
self.vm.inputs.panning(contentOffset: CGPoint(x: 0, y: 0),
translation: CGPoint(x: 0, y: 0),
velocity: CGPoint(x: 0, y: 0),
isDragging: false)
self.cancelInteractiveTransition.assertValueCount(0)
self.dismissViewController.assertValueCount(0)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(0)
self.setTransitionAnimatorIsInFlight.assertValues([false])
}
func testTransitionLifecycle_ScrollDown_BackUp_Overscroll() {
self.vm.inputs.configureWith(project: .template, refTag: .category)
self.vm.inputs.viewDidLoad()
self.cancelInteractiveTransition.assertValueCount(0)
self.dismissViewController.assertValueCount(0)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(0)
self.setTransitionAnimatorIsInFlight.assertValues([])
self.vm.inputs.panning(contentOffset: CGPoint(x: 0, y: 20),
translation: CGPoint(x: 0, y: -20),
velocity: CGPoint(x: 0, y: -20),
isDragging: true)
self.cancelInteractiveTransition.assertValueCount(0)
self.dismissViewController.assertValueCount(0)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(0)
self.setTransitionAnimatorIsInFlight.assertValues([false])
self.vm.inputs.panning(contentOffset: CGPoint(x: 0, y: 0),
translation: CGPoint(x: 0, y: 0),
velocity: CGPoint(x: 0, y: 20),
isDragging: true)
self.cancelInteractiveTransition.assertValueCount(0)
self.dismissViewController.assertValueCount(0)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(0)
self.setTransitionAnimatorIsInFlight.assertValues([false])
self.vm.inputs.panning(contentOffset: CGPoint(x: 0, y: -20),
translation: CGPoint(x: 0, y: 20),
velocity: CGPoint(x: 0, y: 20),
isDragging: true)
self.cancelInteractiveTransition.assertValueCount(0)
self.dismissViewController.assertValueCount(1)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(1)
self.setTransitionAnimatorIsInFlight.assertValues([false, true])
self.vm.inputs.panning(contentOffset: CGPoint(x: 0, y: -40),
translation: CGPoint(x: 0, y: 40),
velocity: CGPoint(x: 0, y: 20),
isDragging: true)
self.cancelInteractiveTransition.assertValueCount(0)
self.dismissViewController.assertValueCount(1)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(2)
self.setTransitionAnimatorIsInFlight.assertValues([false, true])
self.vm.inputs.panning(contentOffset: CGPoint(x: 0, y: -40),
translation: CGPoint(x: 0, y: 40),
velocity: CGPoint(x: 0, y: 20),
isDragging: false)
self.cancelInteractiveTransition.assertValueCount(0)
self.dismissViewController.assertValueCount(1)
self.finishInteractiveTransition.assertValueCount(1)
self.updateInteractiveTransition.assertValueCount(2)
self.setTransitionAnimatorIsInFlight.assertValues([false, true, false])
XCTAssertEqual(["Closed Project Page"], self.trackingClient.events)
XCTAssertEqual(["swipe"],
self.trackingClient.properties(forKey: "gesture_type", as: String.self),
"Track swiped to close.")
}
func testTransitionLifecycle_Overscroll_Cancel() {
self.vm.inputs.configureWith(project: .template, refTag: .category)
self.vm.inputs.viewDidLoad()
self.cancelInteractiveTransition.assertValueCount(0)
self.dismissViewController.assertValueCount(0)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(0)
self.setTransitionAnimatorIsInFlight.assertValues([])
self.vm.inputs.panning(contentOffset: CGPoint(x: 0, y: -20),
translation: CGPoint(x: 0, y: 20),
velocity: CGPoint(x: 0, y: 20),
isDragging: true)
self.cancelInteractiveTransition.assertValueCount(0)
self.dismissViewController.assertValueCount(1)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(1)
self.setTransitionAnimatorIsInFlight.assertValues([true])
self.vm.inputs.panning(contentOffset: CGPoint(x: 0, y: -10),
translation: CGPoint(x: 0, y: 10),
velocity: CGPoint(x: 0, y: -10),
isDragging: true)
self.cancelInteractiveTransition.assertValueCount(0)
self.dismissViewController.assertValueCount(1)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(2)
self.setTransitionAnimatorIsInFlight.assertValues([true])
self.vm.inputs.panning(contentOffset: CGPoint(x: 0, y: -10),
translation: CGPoint(x: 0, y: 10),
velocity: CGPoint(x: 0, y: -10),
isDragging: false)
self.cancelInteractiveTransition.assertValueCount(1)
self.dismissViewController.assertValueCount(1)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(2)
self.setTransitionAnimatorIsInFlight.assertValues([true, false])
}
func testTransitionLifecycle_Overscroll_ScrollBack() {
self.vm.inputs.configureWith(project: .template, refTag: .category)
self.vm.inputs.viewDidLoad()
self.cancelInteractiveTransition.assertValueCount(0)
self.dismissViewController.assertValueCount(0)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(0)
self.setTransitionAnimatorIsInFlight.assertValues([])
self.vm.inputs.panning(contentOffset: CGPoint(x: 0, y: -20),
translation: CGPoint(x: 0, y: 20),
velocity: CGPoint(x: 0, y: 20),
isDragging: true)
self.cancelInteractiveTransition.assertValueCount(0)
self.dismissViewController.assertValueCount(1)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(1)
self.setTransitionAnimatorIsInFlight.assertValues([true])
self.vm.inputs.panning(contentOffset: CGPoint(x: 0, y: 0),
translation: CGPoint(x: 0, y: 20),
velocity: CGPoint(x: 0, y: -20),
isDragging: true)
self.cancelInteractiveTransition.assertValueCount(0)
self.dismissViewController.assertValueCount(1)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(2)
self.setTransitionAnimatorIsInFlight.assertValues([true])
self.vm.inputs.panning(contentOffset: CGPoint(x: 0, y: 20),
translation: CGPoint(x: 0, y: -20),
velocity: CGPoint(x: 0, y: -20),
isDragging: true)
self.cancelInteractiveTransition.assertValueCount(1)
self.dismissViewController.assertValueCount(1)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(2)
self.setTransitionAnimatorIsInFlight.assertValues([true, false])
self.vm.inputs.panning(contentOffset: CGPoint(x: 0, y: 20),
translation: CGPoint(x: 0, y: -20),
velocity: CGPoint(x: 0, y: -20),
isDragging: false)
self.cancelInteractiveTransition.assertValueCount(1)
self.dismissViewController.assertValueCount(1)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(2)
self.setTransitionAnimatorIsInFlight.assertValues([true, false])
}
// This test exercises a particular bug experienced if you are not careful with the transition phases.
// It does the following:
// - Pull down a bit to start dismissing
// - Scroll back up to precisely contentOffset=0 to cancel dismissal
// - Transition phase is in weird state where it cannot dismiss.
func testTransitionLifecycle_Bug() {
self.vm.inputs.configureWith(project: .template, refTag: .category)
self.vm.inputs.viewDidLoad()
self.cancelInteractiveTransition.assertValueCount(0)
self.dismissViewController.assertValueCount(0)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(0)
self.setTransitionAnimatorIsInFlight.assertValueCount(0)
self.vm.inputs.panning(contentOffset: CGPoint(x: 0, y: -20),
translation: CGPoint(x: 0, y: 20),
velocity: CGPoint(x: 0, y: 20),
isDragging: true)
self.cancelInteractiveTransition.assertValueCount(0)
self.dismissViewController.assertValueCount(1)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(1)
self.setTransitionAnimatorIsInFlight.assertValues([true])
self.vm.inputs.panning(contentOffset: CGPoint(x: 0, y: 0),
translation: CGPoint(x: 0, y: 0),
velocity: CGPoint(x: 0, y: -20),
isDragging: true)
self.cancelInteractiveTransition.assertValueCount(0)
self.dismissViewController.assertValueCount(1)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(2)
self.setTransitionAnimatorIsInFlight.assertValues([true])
self.vm.inputs.panning(contentOffset: CGPoint(x: 0, y: 20),
translation: CGPoint(x: 0, y: -20),
velocity: CGPoint(x: 0, y: -20),
isDragging: true)
self.cancelInteractiveTransition.assertValueCount(1)
self.dismissViewController.assertValueCount(1)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(2)
self.setTransitionAnimatorIsInFlight.assertValues([true, false])
self.vm.inputs.panning(contentOffset: CGPoint(x: 0, y: 20),
translation: CGPoint(x: 0, y: -20),
velocity: CGPoint(x: 0, y: 0),
isDragging: false)
self.cancelInteractiveTransition.assertValueCount(1)
self.dismissViewController.assertValueCount(1)
self.finishInteractiveTransition.assertValueCount(0)
self.updateInteractiveTransition.assertValueCount(2)
self.setTransitionAnimatorIsInFlight.assertValues([true, false])
}
func testSetNeedsStatusBarAppearanceUpdate() {
let playlist = (0...4).map { idx in .template |> Project.lens.id .~ (idx + 42) }
let project = playlist.first!
self.vm.inputs.configureWith(project: project, refTag: .category)
self.vm.inputs.viewDidLoad()
self.setNeedsStatusBarAppearanceUpdate.assertValueCount(0)
self.vm.inputs.willTransition(toProject: playlist[1], at: 1)
self.setNeedsStatusBarAppearanceUpdate.assertValueCount(0)
self.vm.inputs.pageTransition(completed: true, from: 0)
self.setNeedsStatusBarAppearanceUpdate.assertValueCount(1)
}
func testSetInitialPagerViewController() {
self.vm.inputs.configureWith(project: .template, refTag: .category)
self.setInitialPagerViewController.assertValueCount(0)
self.vm.inputs.viewDidLoad()
self.setInitialPagerViewController.assertValueCount(1)
}
func testNotifyDelegateAfterSwipe() {
let playlist = (0...4).map { idx in .template |> Project.lens.id .~ (idx + 42) }
let project = playlist.first!
self.vm.inputs.configureWith(project: project, refTag: .category)
self.vm.inputs.viewDidLoad()
self.vm.inputs.willTransition(toProject: playlist[1], at: 1)
self.vm.inputs.pageTransition(completed: false, from: 0)
self.notifyDelegateTransitionedToProjectIndex.assertValueCount(
0, "Does not emit without completion of swipe."
)
XCTAssertEqual([], self.trackingClient.events)
self.vm.inputs.willTransition(toProject: playlist[1], at: 1)
self.vm.inputs.pageTransition(completed: true, from: 0)
self.notifyDelegateTransitionedToProjectIndex.assertValues([1])
XCTAssertEqual(["Swiped Project", "Project Navigate"], self.trackingClient.events)
XCTAssertEqual(["next", "next"],
self.trackingClient.properties(forKey: "type", as: String.self),
"Track next swipe.")
self.vm.inputs.willTransition(toProject: playlist[1], at: 2)
self.vm.inputs.pageTransition(completed: true, from: 1)
self.notifyDelegateTransitionedToProjectIndex.assertValues([1, 2])
XCTAssertEqual(["Swiped Project", "Project Navigate", "Swiped Project", "Project Navigate"],
self.trackingClient.events)
XCTAssertEqual(["next", "next", "next", "next"],
self.trackingClient.properties(forKey: "type", as: String.self),
"Track next swipe.")
self.vm.inputs.willTransition(toProject: playlist[1], at: 1)
self.vm.inputs.pageTransition(completed: true, from: 2)
self.notifyDelegateTransitionedToProjectIndex.assertValues([1, 2, 1])
XCTAssertEqual(["Swiped Project", "Project Navigate", "Swiped Project", "Project Navigate",
"Swiped Project", "Project Navigate"], self.trackingClient.events)
XCTAssertEqual(["next", "next", "next", "next", "previous", "previous"],
self.trackingClient.properties(forKey: "type", as: String.self),
"Track previous swipe.")
}
}