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https://github.com/apple/swift.git
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Ben Cohen
118 lines
3.3 KiB
Swift
118 lines
3.3 KiB
Swift
//===--- NoncopyableComparable.swift - tests for Comparable: ~Copyable -------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2025 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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// RUN: %target-run-simple-swift(-enable-experimental-feature Lifetimes)
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// REQUIRES: executable_test
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// REQUIRES: swift_feature_Lifetimes
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import StdlibUnittest
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let NoncopyableComparableTests = TestSuite("NoncopyableComparable")
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struct Noncopyable<Wrapped: ~Copyable & ~Escapable>: ~Copyable, ~Escapable {
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var wrapped: Wrapped
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}
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extension Noncopyable: Equatable where Wrapped: Equatable & ~Copyable & ~Escapable { }
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extension Noncopyable: Comparable where Wrapped: Comparable & ~Copyable & ~Escapable {
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static func < (lhs: borrowing Self, rhs: borrowing Self) -> Bool { lhs.wrapped < rhs.wrapped }
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}
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extension Noncopyable: Escapable where Wrapped: Escapable & ~Copyable { }
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struct Nonescapable: ~Escapable {
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let wrapped: Int
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}
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extension Nonescapable: Equatable { }
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extension Nonescapable: Comparable {
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static func <(lhs: Self, rhs: Self) -> Bool { lhs.wrapped < rhs.wrapped }
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}
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extension Comparable where Self: ~Copyable & ~Escapable {
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func isLessThan(_ other: borrowing Self) -> Bool {
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self < other
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}
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}
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func isLessOrEqual<T: Comparable & ~Copyable & ~Escapable>(_ lhs: borrowing T, _ rhs: borrowing T) -> Bool {
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lhs <= rhs
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}
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@available(SwiftStdlib 6.2, *)
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extension InlineArray where Element: Comparable & ~Copyable {
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func minIndex() -> Int? {
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indices.min { self[$0] < self[$1] }
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}
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func inReverseOrder() -> Bool {
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for i in indices.dropFirst() {
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if self[i] > self[i-1] { return false }
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}
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return true
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}
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}
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NoncopyableComparableTests.test("comparing noncopyables") {
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let a = Noncopyable(wrapped: 0)
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let b = Noncopyable(wrapped: 1)
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let c = Noncopyable(wrapped: 2)
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expectTrue(a < b)
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expectTrue(c > a)
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expectFalse(a < a)
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expectFalse(a > c)
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expectFalse(c <= a)
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expectTrue(a <= a)
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expectTrue(a < b && b < c)
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expectTrue(a.isLessThan(b))
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expectTrue(isLessOrEqual(a,b))
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expectFalse(b.isLessThan(a))
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let nc2 = Noncopyable(wrapped: Noncopyable(wrapped: "1"))
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expectFalse(nc2 < nc2)
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expectFalse(nc2 > nc2)
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expectTrue(nc2 >= nc2)
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expectTrue(nc2 < .init(wrapped: .init(wrapped: "2")))
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guard #available(SwiftStdlib 6.2, *) else { return }
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var array: [3 of Noncopyable] = [c,b,a]
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expectTrue(array.minIndex() == 2)
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expectTrue(array.inReverseOrder())
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array.swapAt(1, 2)
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expectFalse(array.inReverseOrder())
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}
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NoncopyableComparableTests.test("comparing nonescapables") {
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let a = Noncopyable<Nonescapable>(wrapped: .init(wrapped: 0))
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let b = Noncopyable<Nonescapable>(wrapped: .init(wrapped: 1))
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let c = Noncopyable<Nonescapable>(wrapped: .init(wrapped: 2))
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expectTrue(a < b)
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expectTrue(c > a)
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expectFalse(a < a)
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expectFalse(a > c)
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expectFalse(c <= a)
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expectTrue(a <= a)
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expectTrue(a < b && b < c)
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expectTrue(a.isLessThan(b))
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expectTrue(isLessOrEqual(a,b))
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expectFalse(b.isLessThan(a))
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}
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runAllTests()
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