LibJS: Implement console.assert()

Author: https://github.com/linusg Commit: 8d490aba76 Pull-request: https://github.com/SerenityOS/serenity/pull/6454 Reviewed-by: https://github.com/alimpfard
2025-08-08 01:00:05 +00:00 · 2021-04-18 17:08:14 +02:00 · 2021-04-18 17:08:14 +02:00 · 8d490aba76 · 2024-07-18 19:26:17 +09:00
commit 8d490aba76
parent e37421bddc
12 changed files with 89 additions and 9 deletions
--- a/Userland/Services/WebContent/WebContentConsoleClient.cpp
+++ b/Userland/Services/WebContent/WebContentConsoleClient.cpp
@ -168,4 +168,25 @@ JS::Value WebContentConsoleClient::count_reset()
    return JS::js_undefined();
 }

+JS::Value WebContentConsoleClient::assert_()
+{
+    auto& vm = this->vm();
+    if (!vm.argument(0).to_boolean()) {
+        StringBuilder html;
+        if (vm.argument_count() > 1) {
+            html.append("<span class=\"error\">");
+            html.append("Assertion failed:");
+            html.append("</span>");
+            html.append(" ");
+            html.append(escape_html_entities(vm.join_arguments(1)));
+        } else {
+            html.append("<span class=\"error\">");
+            html.append("Assertion failed");
+            html.append("</span>");
+        }
+        print_html(html.string_view());
+    }
+    return JS::js_undefined();
+}
+
 }