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

web/tests/message_parser.test.cjs

@@ -0,0 +1,36 @@
+"use strict";
+
+const assert = require("node:assert/strict");
+
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const {$} = require("./lib/zjquery.cjs");
+
+const message_parser = zrequire("message_parser");
+
+const preview_selector = ".message_embed, .youtube-video, .embed-video, .vimeo-video";
+
+run_test("message_has_link_preview", () => {
+    const embed_content = '<div class="message_embed">preview</div>';
+    $(`<div>${embed_content}</div>`).set_find_results(preview_selector, $.create("embed"));
+    assert.equal(message_parser.message_has_link_preview(embed_content), true);
+
+    const youtube_content = '<div class="youtube-video message_inline_image">preview</div>';
+    $(`<div>${youtube_content}</div>`).set_find_results(preview_selector, $.create("youtube"));
+    assert.equal(message_parser.message_has_link_preview(youtube_content), true);
+
+    const embed_video_content = '<div class="embed-video message_inline_image">preview</div>';
+    $(`<div>${embed_video_content}</div>`).set_find_results(
+        preview_selector,
+        $.create("embed-video"),
+    );
+    assert.equal(message_parser.message_has_link_preview(embed_video_content), true);
+
+    const vimeo_content = '<div class="vimeo-video message_inline_image">preview</div>';
+    $(`<div>${vimeo_content}</div>`).set_find_results(preview_selector, $.create("vimeo"));
+    assert.equal(message_parser.message_has_link_preview(vimeo_content), true);
+
+    const plain_content = "<p>plain text</p>";
+    $(`<div>${plain_content}</div>`).set_find_results(preview_selector, []);
+    assert.equal(message_parser.message_has_link_preview(plain_content), false);
+});