From 7d5ca0607c091f76aa29cd6fa8c76cfeb1e02ac8 Mon Sep 17 00:00:00 2001
From: Christian Cleberg <hello@cleberg.net>
Date: Wed, 15 Apr 2026 16:07:09 -0500
Subject: fix: fixes dead relative links in md/org with a new single-file
 viewer when tapped

Fixes: https://todo.sr.ht/~ccleberg/hutch/63
---
 HutchTests/ReadmeViewTests.swift | 101 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)

(limited to 'HutchTests')

diff --git a/HutchTests/ReadmeViewTests.swift b/HutchTests/ReadmeViewTests.swift
index f338525..3b9d80b 100644
--- a/HutchTests/ReadmeViewTests.swift
+++ b/HutchTests/ReadmeViewTests.swift
@@ -103,6 +103,44 @@ struct MarkdownRenderingTests {
         #expect(!html.contains("javascript:"))
     }
 
+    @Test
+    func markdownRelativeLinkWithoutResolverDropped() {
+        let html = markdownToHTML("[LICENSE](LICENSE)")
+
+        #expect(!html.contains("href="))
+        #expect(html.contains("LICENSE"))
+    }
+
+    @Test
+    func markdownRelativeLinkWithResolverRendersAnchor() {
+        let html = markdownToHTML(
+            "[LICENSE](LICENSE)",
+            linkURLResolver: { source in
+                source == "LICENSE" ? "https://git.sr.ht/~ccleberg/Hutch/blob/HEAD/LICENSE" : nil
+            }
+        )
+
+        #expect(html.contains(#"href="https://git.sr.ht/~ccleberg/Hutch/blob/HEAD/LICENSE""#))
+        #expect(html.contains(">LICENSE</a>"))
+    }
+
+    @Test
+    func markdownFragmentLinkWithResolverPreservesFragment() {
+        let html = markdownToHTML(
+            "[section](#install)",
+            linkURLResolver: { source in
+                resolveRepositoryLinkURL(
+                    source,
+                    owner: "~ccleberg",
+                    repositoryName: "Hutch",
+                    readmePath: "README.md"
+                )
+            }
+        )
+
+        #expect(html.contains("href=\"#install\""))
+    }
+
     @Test
     func markdownImageRenders() {
         let html = markdownToHTML("![logo](https://example.com/logo.png)")
@@ -349,3 +387,66 @@ struct RepositoryAssetURLTests {
         #expect(url == "https://git.sr.ht/~ccleberg/Hutch/blob/HEAD/images/My%20Logo.png")
     }
 }
+
+struct RepositoryLinkURLTests {
+
+    @Test
+    func repositoryLinkURLResolvesRelativePath() {
+        let url = resolveRepositoryLinkURL(
+            "LICENSE",
+            owner: "~ccleberg",
+            repositoryName: "Hutch",
+            readmePath: "README.md"
+        )
+
+        #expect(url == "https://git.sr.ht/~ccleberg/Hutch/blob/HEAD/LICENSE")
+    }
+
+    @Test
+    func repositoryLinkURLPassesThroughAbsoluteURL() {
+        let url = resolveRepositoryLinkURL(
+            "https://example.com/page",
+            owner: "~ccleberg",
+            repositoryName: "Hutch",
+            readmePath: "README.md"
+        )
+
+        #expect(url == "https://example.com/page")
+    }
+
+    @Test
+    func repositoryLinkURLPassesThroughFragment() {
+        let url = resolveRepositoryLinkURL(
+            "#install",
+            owner: "~ccleberg",
+            repositoryName: "Hutch",
+            readmePath: "README.md"
+        )
+
+        #expect(url == "#install")
+    }
+
+    @Test
+    func repositoryLinkURLPassesThroughMailto() {
+        let url = resolveRepositoryLinkURL(
+            "mailto:hello@example.com",
+            owner: "~ccleberg",
+            repositoryName: "Hutch",
+            readmePath: "README.md"
+        )
+
+        #expect(url == "mailto:hello@example.com")
+    }
+
+    @Test
+    func repositoryLinkURLResolvesSubdirectoryRelativePath() {
+        let url = resolveRepositoryLinkURL(
+            "docs/SECURITY.md",
+            owner: "~ccleberg",
+            repositoryName: "Hutch",
+            readmePath: "README.md"
+        )
+
+        #expect(url == "https://git.sr.ht/~ccleberg/Hutch/blob/HEAD/docs/SECURITY.md")
+    }
+}
-- 
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