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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift open source project
//
// Copyright (c) 2014-2022 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import _Concurrency
import XCTest
@_spi(SwiftPMInternal)
@testable
import Basics
final class ProgressAnimationTests: XCTestCase {
class TrackingProgressAnimation: ProgressAnimationProtocol {
var steps: [Int] = []
func update(step: Int, total: Int, text: String) {
steps.append(step)
}
func complete(success: Bool) {}
func clear() {}
}
func testThrottledPercentProgressAnimation() {
do {
let tracking = TrackingProgressAnimation()
var now = ContinuousClock().now
let animation = ThrottledProgressAnimation(
tracking, now: { now }, interval: .milliseconds(100),
clock: ContinuousClock.self
)
// Update the animation 10 times with a 50ms interval.
let total = 10
for i in 0...total {
animation.update(step: i, total: total, text: "")
now += .milliseconds(50)
}
animation.complete(success: true)
XCTAssertEqual(tracking.steps, [0, 2, 4, 6, 8, 10])
}
do {
// Check that the last animation update is sent even if
// the interval has not passed.
let tracking = TrackingProgressAnimation()
var now = ContinuousClock().now
let animation = ThrottledProgressAnimation(
tracking, now: { now }, interval: .milliseconds(100),
clock: ContinuousClock.self
)
// Update the animation 10 times with a 50ms interval.
let total = 10
for i in 0...total-1 {
animation.update(step: i, total: total, text: "")
now += .milliseconds(50)
}
// The next update is at 1000ms, but we are at 950ms,
// so "step 9" is not sent yet.
XCTAssertEqual(tracking.steps, [0, 2, 4, 6, 8])
// After explicit "completion", the last step is flushed out.
animation.complete(success: true)
XCTAssertEqual(tracking.steps, [0, 2, 4, 6, 8, 9])
}
}
}
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