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//
// TransformOperationTests.swift
// OperationsTests
//
// Created by pronebird on 26/04/2023.
// Copyright © 2023 Mullvad VPN AB. All rights reserved.
//
import MullvadTypes
import Operations
import XCTest
final class TransformOperationTests: XCTestCase {
let operationQueue = AsyncOperationQueue()
func testBlockTransformOperation() {
let finishExpectation = expectation(description: "Should finish")
let transform = TransformOperation(input: Int.zero) { input, finish in
finish(.success(input + 1))
}
transform.onFinish { op, error in
XCTAssertEqual(op.result?.value, 1)
finishExpectation.fulfill()
}
operationQueue.addOperation(transform)
waitForExpectations(timeout: 1)
}
func testThrowingBlockTransformOperation() {
let finishExpectation = expectation(description: "Should finish")
let transform = TransformOperation(input: Int.zero) { value in
throw URLError(.badURL)
}
transform.onFinish { op, error in
XCTAssertEqual(error as? URLError, URLError(.badURL))
finishExpectation.fulfill()
}
operationQueue.addOperation(transform)
waitForExpectations(timeout: 1)
}
func testCancellableTaskBlockTransformOperation() {
let finishExpectation = expectation(description: "Should finish")
let transform = TransformOperation<Int, Int>(input: Int.zero) { _, finish -> Cancellable in
return AnyCancellable {
finish(.failure(URLError(.cancelled)))
}
}
transform.onStart { op in
op.cancel()
}
transform.onFinish { op, error in
XCTAssertEqual(error as? URLError, URLError(.cancelled))
finishExpectation.fulfill()
}
operationQueue.addOperation(transform)
waitForExpectations(timeout: 1)
}
func testShouldFailWithUnsatisfiedRequirement() {
let finishExpectation = expectation(description: "Should finish")
let transform = TransformOperation<Int, Int> { input, finish in
finish(.success(input))
}
transform.onFinish { _, error in
XCTAssertEqual(error as? OperationError, .unsatisfiedRequirement)
finishExpectation.fulfill()
}
operationQueue.addOperation(transform)
waitForExpectations(timeout: 1)
}
}
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