From b7de2253641cfda95c9ed95dfa256caffaebac00 Mon Sep 17 00:00:00 2001
From: Lawrence Chen <54008264+lawrencecchen@users.noreply.github.com>
Date: Fri, 13 Mar 2026 05:08:49 -0700
Subject: [PATCH] test: cover attachment-only rtfd image paste fallback

---
 cmuxTests/CmuxWebViewKeyEquivalentTests.swift | 53 +++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/cmuxTests/CmuxWebViewKeyEquivalentTests.swift b/cmuxTests/CmuxWebViewKeyEquivalentTests.swift
index 1543ff56..5ce3ed6d 100644
--- a/cmuxTests/CmuxWebViewKeyEquivalentTests.swift
+++ b/cmuxTests/CmuxWebViewKeyEquivalentTests.swift
@@ -956,6 +956,59 @@ final class GhosttyPasteboardHelperTests: XCTestCase {
         XCTAssertTrue(imagePath.hasSuffix(".jpeg"))
         XCTAssertTrue(FileManager.default.fileExists(atPath: imagePath))
     }
+
+    func testAttachmentOnlyRTFDClipboardFallsBackToImagePath() throws {
+        let pasteboard = NSPasteboard(name: .init("cmux-test-rtfd-attachment-\(UUID().uuidString)"))
+        pasteboard.clearContents()
+
+        let image = NSImage(size: NSSize(width: 1, height: 1))
+        image.lockFocus()
+        NSColor.orange.setFill()
+        NSRect(x: 0, y: 0, width: 1, height: 1).fill()
+        image.unlockFocus()
+
+        let attachment = NSTextAttachment()
+        attachment.image = image
+        let attributed = NSAttributedString(attachment: attachment)
+        let data = try attributed.data(
+            from: NSRange(location: 0, length: attributed.length),
+            documentAttributes: [.documentType: NSAttributedString.DocumentType.rtfd]
+        )
+        pasteboard.setData(data, forType: .rtfd)
+
+        XCTAssertNil(cmuxPasteboardStringContentsForTesting(pasteboard))
+
+        let imagePath = try XCTUnwrap(cmuxPasteboardImagePathForTesting(pasteboard))
+        defer { try? FileManager.default.removeItem(atPath: imagePath) }
+
+        XCTAssertTrue(imagePath.hasSuffix(".tiff"))
+        XCTAssertTrue(FileManager.default.fileExists(atPath: imagePath))
+    }
+
+    func testRTFDClipboardWithVisibleTextPrefersText() throws {
+        let pasteboard = NSPasteboard(name: .init("cmux-test-rtfd-text-\(UUID().uuidString)"))
+        pasteboard.clearContents()
+
+        let image = NSImage(size: NSSize(width: 1, height: 1))
+        image.lockFocus()
+        NSColor.purple.setFill()
+        NSRect(x: 0, y: 0, width: 1, height: 1).fill()
+        image.unlockFocus()
+
+        let attachment = NSTextAttachment()
+        attachment.image = image
+
+        let attributed = NSMutableAttributedString(string: "Hello ")
+        attributed.append(NSAttributedString(attachment: attachment))
+        let data = try attributed.data(
+            from: NSRange(location: 0, length: attributed.length),
+            documentAttributes: [.documentType: NSAttributedString.DocumentType.rtfd]
+        )
+        pasteboard.setData(data, forType: .rtfd)
+
+        XCTAssertEqual(cmuxPasteboardStringContentsForTesting(pasteboard), "Hello")
+        XCTAssertNil(cmuxPasteboardImagePathForTesting(pasteboard))
+    }
 }
 
 @MainActor