import AppKit
import Testing
@testable import Conjure

@Test @MainActor func fencedCodeHighlightsTokensWithoutChangingSourceOrApplyingMarkdown() throws {
    _ = NSApplication.shared
    for fence in ["```", "~~~~"] {
        let text = "# Heading 🦊\n\(fence)py\ndef main():\n    # comment\n    return \"**not bold**\"\n\(fence)\nAfter\n```unknown-language\n# literal\n```"
        let editor = NSTextView()
        editor.string = text
        MarkdownHighlighting.apply(to: editor)
        let storage = try #require(editor.textStorage)
        func attributes(_ token: String) -> [NSAttributedString.Key: Any] {
            storage.attributes(at: (text as NSString).range(of: token).location, effectiveRange: nil)
        }
        let keyword = try #require(attributes("def")[.foregroundColor] as? NSColor)
        let name = try #require(attributes("main")[.foregroundColor] as? NSColor)
        let comment = try #require(attributes("# comment")[.foregroundColor] as? NSColor)
        #expect(keyword != name)
        #expect(comment != keyword)
        #expect((attributes("**not bold**")[.font] as? NSFont)?.isFixedPitch == true)
        #expect((attributes("After")[.font] as? NSFont)?.isFixedPitch == false)
        #expect(storage.string == text)
        editor.string = "```python\ndef main():\n    pass"
        MarkdownHighlighting.apply(to: editor)
        let unfinished = try #require(editor.textStorage)
        #expect(unfinished.attribute(.foregroundColor, at: 10, effectiveRange: nil) as? NSColor == keyword)
    }
}