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//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 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 Swift project authors
//
@testable @_spi(ForToolsIntegrationOnly) import Testing
struct BacktracedError: Error {}
@Suite("Backtrace Tests")
struct BacktraceTests {
@Test("Thrown error captures backtrace")
func thrownErrorCapturesBacktrace() async throws {
await confirmation("Backtrace found") { hadBacktrace in
let test = Test {
throw BacktracedError()
}
var configuration = Configuration()
configuration.eventHandler = { event, _ in
if case let .issueRecorded(issue) = event.kind,
let backtrace = issue.sourceContext.backtrace,
!backtrace.addresses.isEmpty {
hadBacktrace()
}
}
let runner = await Runner(testing: [test], configuration: configuration)
await runner.run()
}
}
@Test("Backtrace.current() is populated")
func currentBacktrace() throws {
let backtrace = try #require(Backtrace.current())
#expect(!backtrace.addresses.isEmpty)
}
@Test("An unthrown error has no backtrace")
func noBacktraceForNewError() throws {
#expect(Backtrace(forFirstThrowOf: BacktracedError()) == nil)
}
#if canImport(Foundation)
@Test("Encoding/decoding")
func encodingAndDecoding() throws {
let original = Backtrace.current()
let copy = try JSON.encodeAndDecode(original)
#expect(original == copy)
}
#endif
}
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