fix: highlight fenced code by language

2026-10-17 01:13:47 +02:00
parent e36a8bbc6b
commit 433c5c3c2a
6 changed files with 98 additions and 3 deletions
@@ -0,0 +1,31 @@
+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("# comment")[.font] as? NSFont)?.pointSize == 14)
+        #expect((attributes("**not bold**")[.font] as? NSFont)?.isFixedPitch == true)
+        #expect((attributes("# literal")[.font] as? NSFont)?.pointSize == 14)
+        #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)
+    }
+}