/// Asserts that an expression crashes. /// - Important: **The expression will not be evaluated if current process is being debugged.** /// - Parameters: /// - expression: An `expression` that can crash. /// - message: An optional description of the failure. /// - file: The file in which failure occurred. /// Defaults to the file name of the test case in which this function was called. /// - line: The line number on which failure occurred. /// Defaults to the line number on which this function was called. /// - signalHandler: An optional handler for signal that are produced by `expression`. /// - stdoutHandler: An optional handler for stdout that are produced by `expression`. /// - stderrHandler: An optional handler for stderr that are produced by `expression`. /// - Returns: A value of type `T?`, the result of evaluating the given `expression`. /// `nil` if expression crashed. @discardableResult public func XCTAssertCrash<T>( _ expression: @escaping @autoclosure () -> T, _ message: @autoclosure () -> String = "", file: StaticString = #file, line: UInt = #line, signalHandler: (Int32) -> Void = { _ in }, stdoutHandler: (String) -> Void = { _ in }, stderrHandler: (String) -> Void = { _ in } ) -> T?
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