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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift Async Algorithms open source project
//
// Copyright (c) 2022 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
//
//===----------------------------------------------------------------------===//
import XCTest
import AsyncAlgorithms
final class TestDictionary: XCTestCase {
func test_uniqueKeysAndValues() async {
let source = [(1, "a"), (2, "b"), (3, "c")]
let expected = Dictionary(uniqueKeysWithValues: source)
let actual = await Dictionary(uniqueKeysWithValues: source.async)
XCTAssertEqual(expected, actual)
}
func test_throwing_uniqueKeysAndValues() async {
let source = Array([1, 2, 3, 4, 5, 6])
let input = source.async.map { (value: Int) async throws -> (Int, Int) in
if value == 4 { throw NSError(domain: NSCocoaErrorDomain, code: -1, userInfo: nil) }
return (value, value)
}
do {
_ = try await Dictionary(uniqueKeysWithValues: input)
XCTFail()
} catch {
XCTAssertEqual((error as NSError).code, -1)
}
}
func test_uniquingWith() async {
let source = [("a", 1), ("b", 2), ("a", 3), ("b", 4)]
let expected = Dictionary(source) { first, _ in first }
let actual = await Dictionary(source.async) { first, _ in first }
XCTAssertEqual(expected, actual)
}
func test_throwing_uniquingWith() async {
let source = Array([1, 2, 3, 4, 5, 6])
let input = source.async.map { (value: Int) async throws -> (Int, Int) in
if value == 4 { throw NSError(domain: NSCocoaErrorDomain, code: -1, userInfo: nil) }
return (value, value)
}
do {
_ = try await Dictionary(input) { first, _ in first }
XCTFail()
} catch {
XCTAssertEqual((error as NSError).code, -1)
}
}
func test_grouping() async {
let source = ["Kofi", "Abena", "Efua", "Kweku", "Akosua"]
let expected = Dictionary(grouping: source, by: { $0.first! })
let actual = await Dictionary(grouping: source.async, by: { $0.first! })
XCTAssertEqual(expected, actual)
}
func test_throwing_grouping() async {
let source = ["Kofi", "Abena", "Efua", "Kweku", "Akosua"]
let input = source.async.map { (value: String) async throws -> String in
if value == "Kweku" { throw NSError(domain: NSCocoaErrorDomain, code: -1, userInfo: nil) }
return value
}
do {
_ = try await Dictionary(grouping: input, by: { $0.first! })
XCTFail()
} catch {
XCTAssertEqual((error as NSError).code, -1)
}
}
}
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