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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2023 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
//
//===----------------------------------------------------------------------===//
// This test file has been translated from swift/test/Parse/optional_chain_lvalues.swift
import XCTest
final class OptionalChainLvaluesTests: ParserTestCase {
func testOptionalChainLvalues1() {
assertParse(
"""
struct S {
var x: Int = 0
let y: Int = 0 // expected-note 3 {{change 'let' to 'var' to make it mutable}} {{3-6=var}} {{3-6=var}} {{3-6=var}}
mutating func mutateS() {}
init() {}
}
"""
)
}
func testOptionalChainLvalues2() {
assertParse(
"""
struct T {
var mutS: S? = nil
let immS: S? = nil // expected-note 4 {{change 'let' to 'var' to make it mutable}} {{3-6=var}} {{3-6=var}} {{3-6=var}} {{3-6=var}}
mutating func mutateT() {}
init() {}
}
"""
)
}
func testOptionalChainLvalues3() {
assertParse(
"""
var mutT: T?
let immT: T? = nil
"""
)
}
func testOptionalChainLvalues4() {
assertParse(
"""
postfix operator ++
prefix operator ++
"""
)
}
func testOptionalChainLvalues5() {
assertParse(
"""
public postfix func ++ <T>(rhs: inout T) -> T { fatalError() }
public prefix func ++ <T>(rhs: inout T) -> T { fatalError() }
"""
)
}
func testOptionalChainLvalues6() {
assertParse(
"""
mutT?.mutateT()
immT?.mutateT()
mutT?.mutS?.mutateS()
mutT?.immS?.mutateS()
mutT?.mutS?.x += 1
mutT?.mutS?.y++
"""
)
}
func testOptionalChainLvalues7() {
assertParse(
"""
// Prefix operators don't chain
++mutT?.mutS?.x
++mutT?.mutS?.y
"""
)
}
func testOptionalChainLvalues8() {
assertParse(
"""
mutT? = T()
mutT?.mutS = S()
mutT?.mutS? = S()
mutT?.mutS?.x += 0
_ = mutT?.mutS?.x + 0
mutT?.mutS?.y -= 0
mutT?.immS = S()
mutT?.immS? = S()
mutT?.immS?.x += 0
mutT?.immS?.y -= 0
"""
)
}
}
|
