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/*
This source file is part of the Swift.org open source project
Copyright 2016 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 Swift project authors
*/
import XCTest
import TSCBasic
import TSCTestSupport
private enum DummyError: Error, Equatable {
case somethingWentWrong
}
private enum OtherDummyError: Error, Equatable {
case somethingElseWentWrong
case andYetAnotherThingToGoWrong
}
class ResultTests: XCTestCase {
func testTryMap() {
let result1 = Result<Int, Error>.success(1).tryMap({ $0 + 1 })
XCTAssertEqual(result1.success, 2)
let result2 = Result<Int, Error>.failure(DummyError.somethingWentWrong).tryMap({ (value: Int) -> Int in
XCTFail("should not reach here")
return value
})
XCTAssertEqual(result2.failure as? DummyError, DummyError.somethingWentWrong)
let result3 = Result<Int, Error>.success(1).tryMap({ (value: Int) -> Int in
throw OtherDummyError.somethingElseWentWrong
})
XCTAssertEqual(result3.failure as? OtherDummyError, OtherDummyError.somethingElseWentWrong)
let result4 = Result<Int, Error>.failure(DummyError.somethingWentWrong).tryMap({ (value: Int) -> Int in
XCTFail("should not reach here")
throw OtherDummyError.somethingElseWentWrong
})
XCTAssertEqual(result4.failure as? DummyError, DummyError.somethingWentWrong)
}
}
extension Result {
var success: Success? {
switch self {
case .success(let success):
return success
case .failure:
return nil
}
}
var failure: Failure? {
switch self {
case .success:
return nil
case .failure(let error):
return error
}
}
}
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