From 687aad01be874ee5d5cbbe6cc7cea6a47d4eee2d Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Tue, 8 Sep 2020 17:59:13 +0200
Subject: [PATCH] test-js: Add -g option to run a garbage collection on each
 allocation

This is very slow, but very good at flushing out GC bugs. :^)
---
 Userland/test-js.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Userland/test-js.cpp b/Userland/test-js.cpp
index a724f9e267..10c0810ec7 100644
--- a/Userland/test-js.cpp
+++ b/Userland/test-js.cpp
@@ -43,6 +43,8 @@
 
 #define TOP_LEVEL_TEST_NAME "__$$TOP_LEVEL$$__"
 
+static bool collect_on_every_allocation = false;
+
 enum class TestResult {
     Pass,
     Fail,
@@ -257,6 +259,8 @@ JSFileResult TestRunner::run_file_test(const String& test_path)
     double start_time = get_time_in_ms();
     auto interpreter = JS::Interpreter::create<TestRunnerGlobalObject>();
 
+    interpreter->heap().set_should_collect_on_every_allocation(collect_on_every_allocation);
+
     if (!m_test_program) {
         auto result = parse_file(String::format("%s/test-common.js", m_test_root.characters()));
         if (result.is_error()) {
@@ -567,6 +571,7 @@ int main(int argc, char** argv)
 
     Core::ArgsParser args_parser;
     args_parser.add_option(print_times, "Show duration of each test", "show-time", 't');
+    args_parser.add_option(collect_on_every_allocation, "Collect garbage after every allocation", "collect-often", 'g');
     args_parser.parse(argc, argv);
 
     if (getenv("DISABLE_DBG_OUTPUT")) {