import Foundation

@main
struct FolderImportSourceTests {
    static func rejects(_ sources: [URL]) {
        do {
            _ = try FolderImportSource.validate(sources)
            preconditionFailure("Unexpectedly accepted \(sources)")
        } catch {
            precondition(!error.localizedDescription.isEmpty)
        }
    }

    static func main() throws {
        let root = FileManager.default.temporaryDirectory.appendingPathComponent(UUID().uuidString, isDirectory: true)
        try FileManager.default.createDirectory(at: root, withIntermediateDirectories: true)
        defer { try? FileManager.default.removeItem(at: root) }
        let folder = root.appendingPathComponent("报销 材料", isDirectory: true)
        try FileManager.default.createDirectory(at: folder, withIntermediateDirectories: true)
        let validated = try FolderImportSource.validate([folder])
        precondition(validated == folder)
        let file = root.appendingPathComponent("发票.pdf")
        try Data().write(to: file)
        let application = root.appendingPathComponent("测试.app", isDirectory: true)
        try FileManager.default.createDirectory(at: application, withIntermediateDirectories: true)
        rejects([])
        rejects([folder, folder])
        rejects([folder, file])
        rejects([file])
        rejects([application])
        rejects([URL(string: "https://example.invalid/materials")!])
        rejects([root.appendingPathComponent("不存在")])
        print("Folder import validation tests passed")
    }
}