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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2024 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 SwiftDiagnostics
import SwiftSyntax
import SwiftSyntaxBuilder
@_spi(Compiler) import SwiftSyntaxMacroExpansion
import XCTest
import _SwiftSyntaxTestSupport
final class MacroArgumentTests: XCTestCase {
func testDefaultArgumentMacroExprGood() throws {
let macro: ExprSyntax =
"""
#otherMacro(first: (/foo/, 0x42), second: ["a": nil], third: [3.14159, -2.71828], fourth: true)
"""
XCTAssertNoThrow(
try macro.as(MacroExpansionExprSyntax.self)!
.checkDefaultArgumentMacroExpression()
)
}
func testDefaultArgumentMacroExprNonLiteral() throws {
let macro: ExprSyntax =
#"""
#otherMacro(first: b, second: "\(false)", third: 1 + 2)
"""#
XCTAssertThrowsError(
try macro.as(MacroExpansionExprSyntax.self)!
.checkDefaultArgumentMacroExpression()
) { error in
guard let diagError = error as? DiagnosticsError else {
XCTFail("should have failed with a diagnostics error")
return
}
let diags = diagError.diagnostics
XCTAssertEqual(diags.count, 3)
for diag in diags {
XCTAssertEqual(
diag.diagMessage.message,
"only literals are permitted"
)
}
}
}
}
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