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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2018 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import SKTestSupport
import SKUtilities
import XCTest
final class DebouncerTests: XCTestCase {
func testDebouncerDebounces() async throws {
let expectation = self.expectation(description: "makeCallCalled")
expectation.assertForOverFulfill = true
let debouncer = Debouncer<Void>(debounceDuration: .seconds(0.1)) {
expectation.fulfill()
}
await debouncer.scheduleCall()
await debouncer.scheduleCall()
try await fulfillmentOfOrThrow([expectation])
// Sleep for 0.2s to make sure the debouncer actually debounces and doesn't fulfill the expectation twice.
try await Task.sleep(for: .seconds(0.2))
}
func testDebouncerCombinesParameters() async throws {
let expectation = self.expectation(description: "makeCallCalled")
expectation.assertForOverFulfill = true
let debouncer = Debouncer<Int>(debounceDuration: .seconds(0.1), combineResults: { $0 + $1 }) { param in
XCTAssertEqual(param, 3)
expectation.fulfill()
}
await debouncer.scheduleCall(1)
await debouncer.scheduleCall(2)
try await fulfillmentOfOrThrow([expectation])
}
}
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