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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 MetaEnumMacroTests: XCTestCase {
private let macros = ["MetaEnum": MetaEnumMacro.self]
func testExpansionAddsNestedMetaEnum() {
assertMacroExpansion(
"""
@MetaEnum enum Cell {
case integer(Int)
case text(String)
case boolean(Bool)
case null
}
""",
expandedSource: """
enum Cell {
case integer(Int)
case text(String)
case boolean(Bool)
case null
enum Meta {
case integer
case text
case boolean
case null
init(_ __macro_local_6parentfMu_: Cell) {
switch __macro_local_6parentfMu_ {
case .integer:
self = .integer
case .text:
self = .text
case .boolean:
self = .boolean
case .null:
self = .null
}
}
}
}
""",
macros: macros,
indentationWidth: .spaces(2)
)
}
func testExpansionAddsPublicNestedMetaEnum() {
assertMacroExpansion(
"""
@MetaEnum public enum Cell {
case integer(Int)
case text(String)
case boolean(Bool)
}
""",
expandedSource: """
public enum Cell {
case integer(Int)
case text(String)
case boolean(Bool)
public enum Meta {
case integer
case text
case boolean
public init(_ __macro_local_6parentfMu_: Cell) {
switch __macro_local_6parentfMu_ {
case .integer:
self = .integer
case .text:
self = .text
case .boolean:
self = .boolean
}
}
}
}
""",
macros: macros,
indentationWidth: .spaces(2)
)
}
func testExpansionOnStructEmitsError() {
assertMacroExpansion(
"""
@MetaEnum struct Cell {
let integer: Int
let text: String
let boolean: Bool
}
""",
expandedSource: """
struct Cell {
let integer: Int
let text: String
let boolean: Bool
}
""",
diagnostics: [
DiagnosticSpec(
message: "'@MetaEnum' can only be attached to an enum, not a struct",
line: 1,
column: 1,
severity: .error
)
],
macros: macros,
indentationWidth: .spaces(2)
)
}
}
|
