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82 lines
2.3 KiB
Swift
82 lines
2.3 KiB
Swift
// ScreenBrightnessBoostTests.swift
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// OSGKeyboardTests
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//
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// Whatever order holds and scene changes arrive in, the user's own
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// brightness must come back once nothing needs the boost.
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@testable import OSGKeyboard
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import XCTest
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@MainActor
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final class ScreenBrightnessBoostTests: XCTestCase {
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private final class FakeScreen: ScreenBrightnessControlling {
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var brightness: CGFloat
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init(brightness: CGFloat) { self.brightness = brightness }
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}
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func testHoldRaisesBrightnessAndReleaseRestoresIt() {
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let screen = FakeScreen(brightness: 0.4)
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let boost = ScreenBrightnessBoost { screen }
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boost.acquire()
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XCTAssertEqual(screen.brightness, 1)
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boost.release()
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XCTAssertEqual(screen.brightness, 0.4)
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}
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func testOverlappingHoldsKeepTheOriginalLevel() {
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let screen = FakeScreen(brightness: 0.3)
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let boost = ScreenBrightnessBoost { screen }
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// A new view appears before the previous one disappears.
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boost.acquire()
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boost.acquire()
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boost.release()
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XCTAssertEqual(screen.brightness, 1)
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boost.release()
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XCTAssertEqual(screen.brightness, 0.3)
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}
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func testBackgroundRestoresAndForegroundReapplies() {
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let screen = FakeScreen(brightness: 0.5)
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let boost = ScreenBrightnessBoost { screen }
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boost.acquire()
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boost.setInForeground(false)
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XCTAssertEqual(screen.brightness, 0.5)
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boost.setInForeground(true)
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XCTAssertEqual(screen.brightness, 1)
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boost.release()
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XCTAssertEqual(screen.brightness, 0.5)
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}
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func testUnbalancedReleaseLeavesBrightnessAlone() {
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let screen = FakeScreen(brightness: 0.6)
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let boost = ScreenBrightnessBoost { screen }
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boost.release()
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boost.acquire()
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XCTAssertEqual(screen.brightness, 1)
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boost.release()
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XCTAssertEqual(screen.brightness, 0.6)
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}
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func testMissingScreenIsRetriedOnTheNextChange() {
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var screen: FakeScreen?
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let boost = ScreenBrightnessBoost { screen }
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boost.acquire()
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screen = FakeScreen(brightness: 0.2)
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boost.setInForeground(true)
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XCTAssertEqual(screen?.brightness, 1)
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boost.release()
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XCTAssertEqual(screen?.brightness, 0.2)
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}
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}
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