From d3a5876ecca7a5dcfcdbaa07b6cff69931fe5257 Mon Sep 17 00:00:00 2001
From: Maximilian Bauer <bauer.maximilian@web.de>
Date: Fri, 9 Apr 2021 21:01:53 +0200
Subject: [PATCH] UnitTests: fixing player seek tests

---
 Amperfy/Common/AppDelegate.swift              |  2 +-
 Amperfy/Player/BackendAudioPlayer.swift       |  5 ++-
 .../Cases/Player/MusicPlayerTest.swift        | 38 ++++++++++++++++++-
 3 files changed, 40 insertions(+), 5 deletions(-)

diff --git a/Amperfy/Common/AppDelegate.swift b/Amperfy/Common/AppDelegate.swift
index a377acfb..7ecd2bb1 100644
--- a/Amperfy/Common/AppDelegate.swift
+++ b/Amperfy/Common/AppDelegate.swift
@@ -20,7 +20,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         return backendProxy
     }()
     lazy var player = {
-        return MusicPlayer(coreData: persistentLibraryStorage.getPlayerData(), downloadManager: downloadManager, backendAudioPlayer: BackendAudioPlayer(songDownloader: downloadManager, songCache: persistentLibraryStorage))
+        return MusicPlayer(coreData: persistentLibraryStorage.getPlayerData(), downloadManager: downloadManager, backendAudioPlayer: BackendAudioPlayer(mediaPlayer: AVPlayer(), songDownloader: downloadManager, songCache: persistentLibraryStorage))
     }()
     lazy var downloadManager: DownloadManager = {
         let requestManager = RequestManager()
diff --git a/Amperfy/Player/BackendAudioPlayer.swift b/Amperfy/Player/BackendAudioPlayer.swift
index ead30865..c280fca1 100644
--- a/Amperfy/Player/BackendAudioPlayer.swift
+++ b/Amperfy/Player/BackendAudioPlayer.swift
@@ -30,7 +30,7 @@ class BackendAudioPlayer: SongDownloadNotifiable {
 
     private let songDownloader: SongDownloadable
     private let songCache: SongFileCachable
-    private let player = AVPlayer()
+    private let player: AVPlayer
     private let updateElapsedTimeInterval = CMTime(seconds: 1.0, preferredTimescale: CMTimeScale(NSEC_PER_SEC))
     private var latestPlayRequest: PlayRequest?
     private let semaphore = DispatchSemaphore(value: 1)
@@ -61,7 +61,8 @@ class BackendAudioPlayer: SongDownloadNotifiable {
         return player.currentItem != nil
     }
     
-    init(songDownloader: SongDownloadable, songCache: SongFileCachable) {
+    init(mediaPlayer: AVPlayer, songDownloader: SongDownloadable, songCache: SongFileCachable) {
+        self.player = mediaPlayer
         self.songDownloader = songDownloader
         self.songCache = songCache
         
diff --git a/AmperfyTests/Cases/Player/MusicPlayerTest.swift b/AmperfyTests/Cases/Player/MusicPlayerTest.swift
index a0baaae1..2ded1a8d 100644
--- a/AmperfyTests/Cases/Player/MusicPlayerTest.swift
+++ b/AmperfyTests/Cases/Player/MusicPlayerTest.swift
@@ -1,6 +1,34 @@
 import XCTest
+import AVFoundation
 @testable import Amperfy
 
+class MOCK_AVPlayerItem: AVPlayerItem {
+    override var status: AVPlayerItem.Status {
+        return AVPlayerItem.Status.readyToPlay
+    }
+}
+
+class MOCK_AVPlayer: AVPlayer {
+    var useMockCurrentItem = false
+    
+    override var currentItem: AVPlayerItem? {
+        guard let curItem = super.currentItem else { return nil }
+        if !useMockCurrentItem {
+            return curItem
+        } else {
+            return MOCK_AVPlayerItem(asset: curItem.asset)
+        }
+    }
+    
+    override func currentTime() -> CMTime {
+        let oldUseMock = useMockCurrentItem
+        useMockCurrentItem = false
+        let curTime = super.currentTime()
+        useMockCurrentItem = oldUseMock
+        return curTime
+    }
+}
+
 class MOCK_SongDownloader: SongDownloadable {
     
     var downloadCount = 0
@@ -32,7 +60,8 @@ class MusicPlayerTest: XCTestCase {
     var songDownloader: MOCK_SongDownloader!
     var backendPlayer: BackendAudioPlayer!
     var playerData: PlayerData!
-    var testPlayer: MusicPlayer!
+    var testPlayer: Amperfy.MusicPlayer!
+    var mockAVPlayer: MOCK_AVPlayer!
     
     var songCached: Song!
     var songToDownload: Song!
@@ -42,7 +71,8 @@ class MusicPlayerTest: XCTestCase {
         cdHelper = CoreDataHelper()
         storage = cdHelper.createSeededStorage()
         songDownloader = MOCK_SongDownloader()
-        backendPlayer = BackendAudioPlayer(songDownloader: songDownloader, songCache: storage)
+        mockAVPlayer = MOCK_AVPlayer()
+        backendPlayer = BackendAudioPlayer(mediaPlayer: mockAVPlayer, songDownloader: songDownloader, songCache: storage)
         playerData = storage.getPlayerData()
         testPlayer = MusicPlayer(coreData: playerData, downloadManager: songDownloader, backendAudioPlayer: backendPlayer)
         
@@ -216,7 +246,9 @@ class MusicPlayerTest: XCTestCase {
     func testSeek_FilledPlaylist() {
         testPlayer.play(song: songCached)
         testPlayer.seek(toSecond: 3.0)
+        mockAVPlayer.useMockCurrentItem = true
         XCTAssertEqual(testPlayer.elapsedTime, 3.0)
+        mockAVPlayer.useMockCurrentItem = false
     }
     
     func testPlayPreviousOrReplay_EmptyPlaylist() {
@@ -236,7 +268,9 @@ class MusicPlayerTest: XCTestCase {
         prepareWithCachedPlaylist()
         testPlayer.play(songInPlaylistAt: 3)
         testPlayer.seek(toSecond: 10.0)
+        mockAVPlayer.useMockCurrentItem = true
         testPlayer.playPreviousOrReplay()
+        mockAVPlayer.useMockCurrentItem = false
         XCTAssertEqual(testPlayer.currentlyPlaying?.index, 3)
         XCTAssertEqual(testPlayer.elapsedTime, 0.0)
     }