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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.swift
import SwiftSyntax
import XCTest
final class OptionalTests: ParserTestCase {
func testOptional1() {
assertParse(
"""
struct A {
func foo() {}
}
"""
)
}
func testOptional2() {
assertParse(
"""
var a : A?
var b : A 1️⃣?
""",
diagnostics: [
DiagnosticSpec(message: "extraneous code '?' at top level")
]
)
}
func testOptional3a() {
assertParse(
"""
var c = a?
""",
substructure: OptionalChainingExprSyntax(
expression: DeclReferenceExprSyntax(baseName: .identifier("a")),
questionMark: .postfixQuestionMarkToken()
)
)
}
func testOptional3b() {
assertParse(
"""
var d : ()? = a?.foo()
"""
)
}
func testOptional4() {
assertParse(
"""
var e : (() -> A)?
var f = e?()
"""
)
}
func testOptional5() {
assertParse(
"""
struct B<T> {}
var g = B<A?>()
"""
)
}
}
|
