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next/previous item for normal mode #147

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next/previous item for normal mode #147

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3b74575
added fix for normal queues
overovermind Jul 26, 2018
4e023a7
fixed tests
overovermind Jul 26, 2018
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10 changes: 6 additions & 4 deletions AudioPlayer/AudioPlayer/item/AudioItemQueue.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -178,12 +178,14 @@ class AudioItemQueue {
if mode.contains(.repeatAll) && nextPosition <= 0 {
nextPosition = queue.count
}

while nextPosition > 0 {
let previousPosition = nextPosition - 1
var previousPosition = nextPosition - 1
nextPosition = previousPosition
if previousPosition == queue.count - 1 && mode == .normal {
previousPosition -= 1
}
let item = queue[previousPosition]

if shouldConsiderItem(item: item) {
historic.append(item)
return item
Expand All @@ -199,7 +201,7 @@ class AudioItemQueue {
/// A boolean value indicating whether the queue has a previous item to play or not.
var hasPreviousItem: Bool {
if !queue.isEmpty &&
(nextPosition > 0 || mode.contains(.repeat) || mode.contains(.repeatAll)) {
(nextPosition > 1 || mode.contains(.repeat) || mode.contains(.repeatAll)) {
return true
}
return false
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33 changes: 32 additions & 1 deletion AudioPlayer/AudioPlayerTests/AudioItemQueue_Tests.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -156,6 +156,38 @@ class AudioItemQueue_Tests: XCTestCase {
XCTAssert(queue.hasNextItem)
XCTAssert(queue.previousItem() === item1)
}

func testHasPrevious() {
let queue = AudioItemQueue(items: [item1, item2], mode: .normal)
XCTAssertFalse(queue.hasPreviousItem)
XCTAssert(queue.nextItem() === item1)
XCTAssertFalse(queue.hasPreviousItem)
XCTAssert(queue.nextItem() === item2)
XCTAssertTrue(queue.hasPreviousItem)
XCTAssert(queue.previousItem() === item1)
XCTAssert(queue.nextItem() === item2)
}

func testPreviousWithTwoItems() {
let queue = AudioItemQueue(items: [item1, item2], mode: .normal)
XCTAssertFalse(queue.hasPreviousItem)
XCTAssert(queue.nextItem() === item1)
XCTAssertFalse(queue.hasPreviousItem)
XCTAssert(queue.nextItem() === item2)
XCTAssertTrue(queue.hasPreviousItem)
XCTAssert(queue.previousItem() === item1)
XCTAssert(queue.nextItem() === item2)
}

func testPreviousWithOneItem() {
let queue = AudioItemQueue(items: [item1], mode: .normal)
XCTAssertFalse(queue.hasPreviousItem)
XCTAssertTrue(queue.hasNextItem)

XCTAssert(queue.nextItem() === item1)
XCTAssertFalse(queue.hasPreviousItem)
XCTAssertFalse(queue.hasNextItem)
}

func testPreviousInRepeatMode() {
let queue = AudioItemQueue(items: [item1, item2, item3], mode: .repeat)
Expand Down Expand Up @@ -214,7 +246,6 @@ class AudioItemQueue_Tests: XCTestCase {
queue.nextPosition = queue.queue.count
queue.delegate = delegate

XCTAssert(queue.previousItem() === item3)
XCTAssert(queue.previousItem() === item1)
XCTAssertNil(queue.previousItem())
}
Expand Down