1 file changed, 41 insertions, 0 deletions
diff --git a/tests/extensions/test-link-commits.lua b/tests/extensions/test-link-commits.lua
index 45a3f60..fa3a040 100644
--- a/tests/extensions/test-link-commits.lua
+++ b/tests/extensions/test-link-commits.lua
@@ -85,4 +85,45 @@ h.load_with(script, { { "local rules = {", "local rules = { { pattern = \"T:(%S+
 out = render("T:a'b%c")
 h.equals("a captured value is percent-encoded into the url", out, "<a href='https://t/a%27b%25c'>T:a'b%c</a>")
 
+-- A malformed pattern is the operator's error, so that rule is skipped and
+-- the others still run.
+h.load_with(script, { { "local rules = {", "local rules = { { pattern = \"(%d+\", url = \"https://x/%s\" }," } })
+out = render("fixed 42 in deadbee")
+h.equals("a malformed rule is skipped and object names still link", out,
+	"fixed 42 in <a href='./?id=deadbee'>deadbee</a>")
+
+-- Two rules matching at the same place leave it to the one listed first.
+h.load_with(script, { { "local rules = {",
+	"local rules = { { pattern = \"#(%d+)\", url = \"https://a/%s\" }, { pattern = \"#(%d%d)\", url = \"https://b/%s\" }," } })
+out = render("#12")
+h.equals("the rule listed first wins a tie", out, "<a href='https://a/12'>#12</a>")
+
+-- A pattern that can match nothing still moves the scan on, or the page
+-- would never finish.
+h.load_with(script, { { "local rules = {", "local rules = { { pattern = \"x*\", url = \"https://x/%s\" }," } })
+out = render("abc")
+h.equals("a rule matching the empty string still reaches the end", (out:gsub("<[^>]*>", "")), "abc")
+
+h.load_with(script, { { "local rules = {", "local rules = { { pattern = \"RFC%d+\", url = \"https://r/%s\" }," } })
+out = render("see RFC123")
+h.equals("a rule with no capture puts the whole match in the url", out, "see <a href='https://r/RFC123'>RFC123</a>")
+
+h.load_with(script, { { "enabled = true,", "enabled = false," } })
+out = render("fixed in deadbee")
+h.equals("object names can be left unlinked", out, "fixed in deadbee")
+
+h.load_with(script, {
+	{ "-- { pattern = \"CVE", "{ pattern = \"CVE" },
+	{ "--   url = \"https://www.cve.org", "  url = \"https://www.cve.org" },
+	{ "-- { pattern = \"!", "{ pattern = \"!" },
+	{ "--   url = \"https://gitlab", "  url = \"https://gitlab" },
+	{ "-- { pattern = \"RFC", "{ pattern = \"RFC" },
+	{ "--   url = \"https://www.rfc-editor", "  url = \"https://www.rfc-editor" },
+})
+out = render("CVE-2024-12345, !42 and RFC 9110")
+h.equals("the shipped examples link what they describe", out,
+	"<a href='https://www.cve.org/CVERecord?id=CVE-2024-12345'>CVE-2024-12345</a>, " ..
+	"<a href='https://gitlab.example.com/my/repo/-/merge_requests/42'>!42</a> and " ..
+	"<a href='https://www.rfc-editor.org/rfc/rfc9110'>RFC 9110</a>")
+
 h.finish()