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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
//
//===----------------------------------------------------------------------===//
import MacroExamplesImplementation
import SwiftSyntaxMacros
import SwiftSyntaxMacrosTestSupport
import XCTest
final class AddAsyncMacroTests: XCTestCase {
private let macros = ["AddAsync": AddAsyncMacro.self]
func testExpansionTransformsFunctionWithResultCompletionToAsyncThrows() {
assertMacroExpansion(
#"""
@AddAsync
func c(a: Int, for b: String, _ value: Double, completionBlock: @escaping (Result<String, Error>) -> Void) -> Void {
completionBlock(.success("a: \(a), b: \(b), value: \(value)"))
}
"""#,
expandedSource: #"""
func c(a: Int, for b: String, _ value: Double, completionBlock: @escaping (Result<String, Error>) -> Void) -> Void {
completionBlock(.success("a: \(a), b: \(b), value: \(value)"))
}
func c(a: Int, for b: String, _ value: Double) async throws -> String {
try await withCheckedThrowingContinuation { continuation in
c(a: a, for: b, value) { returnValue in
switch returnValue {
case .success(let value):
continuation.resume(returning: value)
case .failure(let error):
continuation.resume(throwing: error)
}
}
}
}
"""#,
macros: macros,
indentationWidth: .spaces(2)
)
}
func testExpansionTransformsFunctionWithBoolCompletionToAsync() {
assertMacroExpansion(
"""
@AddAsync
func d(a: Int, for b: String, _ value: Double, completionBlock: @escaping (Bool) -> Void) -> Void {
completionBlock(true)
}
""",
expandedSource: """
func d(a: Int, for b: String, _ value: Double, completionBlock: @escaping (Bool) -> Void) -> Void {
completionBlock(true)
}
func d(a: Int, for b: String, _ value: Double) async -> Bool {
await withCheckedContinuation { continuation in
d(a: a, for: b, value) { returnValue in
continuation.resume(returning: returnValue)
}
}
}
""",
macros: macros,
indentationWidth: .spaces(2)
)
}
func testExpansionOnStoredPropertyEmitsError() {
assertMacroExpansion(
"""
struct Test {
@AddAsync
var name: String
}
""",
expandedSource: """
struct Test {
var name: String
}
""",
diagnostics: [
DiagnosticSpec(
message: "@addAsync only works on functions",
line: 2,
column: 3,
severity: .error
)
],
macros: macros,
indentationWidth: .spaces(2)
)
}
func testExpansionOnAsyncFunctionEmitsError() {
assertMacroExpansion(
"""
struct Test {
@AddAsync
async func sayHello() {
}
}
""",
expandedSource: """
struct Test {
async func sayHello() {
}
}
""",
diagnostics: [
DiagnosticSpec(
message: "@addAsync requires an function that returns void",
line: 2,
column: 3,
severity: .error
)
],
macros: macros,
indentationWidth: .spaces(2)
)
}
}
|
