snapshot of https://github.com/zulip/zulip.git @ 48c69911c7dd4e03b20552eb3bd77ad8151c1357 (2026-09-15)

web/tests/linkifiers.test.cjs

@@ -0,0 +1,81 @@
+"use strict";
+
+const assert = require("node:assert/strict");
+
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
+
+const linkifiers = zrequire("linkifiers");
+
+linkifiers.initialize([]);
+
+function get_linkifier_regexes() {
+    return linkifiers.get_linkifier_map().keys().toArray();
+}
+
+run_test("compile_linkifier", () => {
+    // Verify basic pattern compilation with RE2JS.
+    linkifiers.update_linkifier_rules([
+        {
+            pattern: "TICKET-(?P<id>\\d+)",
+            url_template: "http://example1.example.com/{id}",
+            id: 10,
+        },
+    ]);
+    let regexes = get_linkifier_regexes();
+    assert.equal(regexes.length, 1);
+    let matcher = regexes[0].matcher(" TICKET-42 ");
+    assert.ok(matcher.find());
+    assert.equal(matcher.group(2), "TICKET-42");
+    assert.equal(matcher.group("id"), "42");
+
+    // Test case with multiple named groups.
+    linkifiers.update_linkifier_rules([
+        {
+            pattern: "#cf(?P<contest>\\d+)(?P<problem>[A-Z][\\dA-Z]*)",
+            url_template: "http://example3.example.com",
+            id: 30,
+        },
+    ]);
+    regexes = get_linkifier_regexes();
+    assert.equal(regexes.length, 1);
+    matcher = regexes[0].matcher(" #cf100Z ");
+    assert.ok(matcher.find());
+    assert.equal(matcher.group(2), "#cf100Z");
+    assert.equal(matcher.group("contest"), "100");
+    assert.equal(matcher.group("problem"), "Z");
+
+    // Boundary matching: linkifier only matches after boundary characters.
+    matcher = regexes[0].matcher("x#cf100Z ");
+    assert.ok(!matcher.find());
+    matcher = regexes[0].matcher("(#cf100Z)");
+    assert.ok(matcher.find());
+    assert.equal(matcher.group(2), "#cf100Z");
+
+    // Test incorrect syntaxes
+
+    // Just absolute garbage:
+    blueslip.expect("error", "Failed to compile linkifier!", 1);
+    linkifiers.update_linkifier_rules([
+        {
+            pattern: "!@#@(!#&((!&(@#(",
+            url_template: "http://example4.example.com",
+            id: 40,
+        },
+    ]);
+    blueslip.reset();
+    assert.deepEqual(get_linkifier_regexes(), []);
+
+    // Python-only inline flags like (?L) are rejected by RE2JS.
+    blueslip.expect("error", "Failed to compile linkifier!", 1);
+    linkifiers.update_linkifier_rules([
+        {
+            pattern: "(?L)foo",
+            url_template: "http://example2.example.com",
+            id: 20,
+        },
+    ]);
+    blueslip.reset();
+    assert.deepEqual(get_linkifier_regexes(), []);
+});